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Grex USA
P635L 23 GAUGE HEADLESS PINNER

THE BEST PINNER

just got better

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grex p635l

CELEBRATING

20 years of the

iconic Grex P635

Own yours today.

The New p635l

BACKED BY 30 YEARS OF DEDICATION

GREX has been creating better built, longer lasting, more powerful tools for over 30 years with parts and support to back it all up. We understand that a tool is an investment in your craft, your passion, and your future. Get your very own P635L and experience 20 years of GREX P635 legacy, craftsmanship and dedication with a tool that’s built to last.

BUILT ON A 20 YEAR LEGACY

The original P635 is the most trusted tool for woodworkers for over 20 years. We kept this same DNA and made enhancements to create the NEW P635L. With new features like the Auto-Lockout with One-Touch override and on-board adjustable Edge Guide, the NEW P635L will take your work to new levels of efficiency.

MAKING THE p635l BETTER

AUTO LOCKOUT WITH ONE-TOUCH OVERRIDE AUTO LOCKOUT WITH ONE-TOUCH OVERRIDE
NEW FEATURE
AUTO LOCKOUT WITH ONE-TOUCH OVERRIDE

The Auto-Lockout feature intelligently halts firing when you're down to about 7 pins, ensuring you're always aware of your pin count and avoids firing empty holes into your work-piece. Fire these remaining pins with a single press of the One-Touch Override button, allowing you to effortlessly resume your project without missing a beat.

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ON-BOARDADJUSTABLE EDGE GUIDE ON-BOARDADJUSTABLE EDGE GUIDE
NEW FEATURE
ON-BOARD ADJUSTABLE EDGE GUIDE

The new precision edge guide allows woodworkers to shoot pins in a straight line without the need for finger-measuring techniques or pulling out your ruler to pre-mark a line. Quickly set the offset distance and be able to precisely fire pins even into the edge of very thin material. There’s also an onboard holder to conveniently store the guide when not in use.

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DRIVE 9 DIFFERENT PIN LENGTHS DRIVE 9 DIFFERENT PIN LENGTHS
feature highlight
DRIVE 9 DIFFERENT PIN LENGTHS

The P635L sports a lightweight, extruded aluminum, stair-stepped, magazine increasing access to tighter areas and more angles. It automatically adjusts to various pin sizes and accepts headless pins from 3/8” to 1-3/8”.

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ALL METAL CONSTRUCTION ALL METAL CONSTRUCTION
feature highlight
ALL METAL CONSTRUCTION

Unlock unparalleled longevity and reliability with the P635L. This powerhouse of durability promises to become an enduring legacy in your workshop, serving generations to come with unwavering performance. From its heavy-duty housing, to its extruded aluminum magazine and precision machined internal pistons and valves, every detail of the P635L exudes unmatched quality and resilience. It's how tools used to be made. Built to last.

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COMPARISON CHART

GREX
GREX

P635L

 METABO
METABO

NP35A

 PORTER CABLE
PORTER CABLE

PIN138

 MAKITA
MAKITA

AF353

 SENCO
SENCO

TN11G1P
THE BEST JUST GOT BETTER
20 years and going proven design check
20 years and going parts support check
FEATURES
On-board edge guide check
Auto Lock-out check check check check
One-touch Lock-out override check
Swivel air plug check check
Easy access to corners check
Large nail view window check
Nail lengths 9 5 7 6 8
Minimum pin length 3/8" 5/8" 5/8" 5/8" 1/2"
CONSTRUCTION
Heavy-duty casted aluminum housing check check
Aluminum cylinder check check
Aluminum head valve check check check
All metal head valve housing check check check
Grooved nose cover check check
Easy off nose cover check check
Fine pointed nose check check check check
One-piece driver blade check check
Metal triggers check
Metal belt hook check
Pusher feed springs 7 1 5 1 7
Nail levelers 6 4 4 4 6
All metal nail feeding system check check check
Metal magazine cover latch check check check
Grex P635L

GREX P635L Taiwan

THE BEST JUST GOT BETTER

20 years and going proven design

check

20 years and going parts support

check
FEATURES

On-board edge guide

---

Auto Lock-Out

---

One-touch Lock-out override

---

Swivel air plug

---

Easy access to corners

---

Large nail view window

---

Nail lengths

9

Minimum pin length

3/8”
CONSTRUCTION

Heavy-duty casted aluminum housing

check

Aluminum cylinder

check

Aluminum head valve

check

All metal head valve housing

check

Grooved nose cover

check

Easy off nose cover

check

Fine pointed nose

check

One-piece driver blade

check

Metal triggers

check

Metal belt hook

check

Pusher feed springs

check

Nail levelers

check

All metal nail feeding system

check

Metal magazine cover latch

check
Grex P635L

METABO NP35A Taiwan

THE BEST JUST GOT BETTER

20 years and going proven design

---

20 years and going parts support

---
FEATURES

On-board edge guide

---

Auto Lock-Out

---

One-touch Lock-out override

---

Swivel air plug

---

Easy access to corners

---

Large nail view window

---

Nail lengths

5

Minimum pin length

5/8”
CONSTRUCTION

Heavy-duty casted aluminum housing

---

Aluminum cylinder

---

Aluminum head valve

check

All metal head valve housing

check

Grooved nose cover

---

Easy off nose cover

---

Fine pointed nose

check

One-piece driver blade

---

Metal triggers

---

Metal belt hook

---

Pusher feed springs

1

Nail levelers

4

All metal nail feeding system

---

Metal magazine cover latch

check
Grex P635L

PORTER CABLE PIN138 Taiwan

THE BEST JUST GOT BETTER

20 years and going proven design

---

20 years and going parts support

---
FEATURES

On-board edge guide

---

Auto Lock-Out

check

One-touch Lock-out override

---

Swivel air plug

---

Easy access to corners

---

Large nail view window

---

Nail lengths

7

Minimum pin length

5/8”
CONSTRUCTION

Heavy-duty casted aluminum housing

---

Aluminum cylinder

---

Aluminum head valve

---

All metal head valve housing

---

Grooved nose cover

check

Easy off nose cover

check

Fine pointed nose

check

One-piece driver blade

---

Metal triggers

---

Metal belt hook

---

Pusher feed springs

5

Nail levelers

4

All metal nail feeding system

check

Metal magazine cover latch

check
Grex P635L

MAKITA AF353 China

THE BEST JUST GOT BETTER

20 years and going proven design

---

20 years and going parts support

---
FEATURES

On-board edge guide

---

Auto Lock-Out

check

One-touch Lock-out override

---

Swivel air plug

---

Easy access to corners

---

Large nail view window

---

Nail lengths

6

Minimum pin length

5/8”
CONSTRUCTION

Heavy-duty casted aluminum housing

---

Aluminum cylinder

check

Aluminum head valve

check

All metal head valve housing

check

Grooved nose cover

---

Easy off nose cover

---

Fine pointed nose

check

One-piece driver blade

---

Metal triggers

---

Metal belt hook

---

Pusher feed springs

1

Nail levelers

4

All metal nail feeding system

---

Metal magazine cover latch

check
SENCO TN11G1P

SENCO TN11G1P Taiwan

THE BEST JUST GOT BETTER

20 years and going proven design

---

20 years and going parts support

---
FEATURES

On-board edge guide

---

Auto Lock-Out

check

One-touch Lock-out override

---

Swivel air plug

check

Easy access to corners

---

Large nail view window

---

Nail lengths

8

Minimum pin length

1/2”
CONSTRUCTION

Heavy-duty casted aluminum housing

check

Aluminum cylinder

---

Aluminum head valve

---

All metal head valve housing

---

Grooved nose cover

---

Easy off nose cover

---

Fine pointed nose

---

One-piece driver blade

check

Metal triggers

---

Metal belt hook

---

Pusher feed springs

7

Nail levelers

6

All metal nail feeding system

check

Metal magazine cover latch

check

TOOL DETAILS & TECHNICAL SPECIFICATIONS

TOOL DETAILS & TECHNICAL SPECIFICATIONS
MODEL NUMBER

P635L

WEIGHT

2.4 lbs

FASTENER RANGE

3/8" - 1-3/8" except 1-1/4"

KIT ALSO INCLUDES

Carrying case, safety glasses, tool oil, hex keys

FASTENER TYPE

23 Gauge Headless Pins

FASTENER CAPACITY

1 strip (approx 100 pins)

DIMENSIONS

7.75" x 7.5" x 1.75"

OPERATING PRESSURE

60 - 110 psi

WHY 23 GAUGE?

QUALITY QUALITY
EFFICIENCY EFFICIENCY
STRENGTH STRENGTH
ACCURACY ACCURACY

GREX PINNER EVOLUTION

  1. 0622

    - 0622

    1st Grex Pinner

  2. P630

    - P630

    The first pinner with innovative self adjusting magazine

  3. P635

    - P635

    A revolutionary pinner designed for the discerning craftsman

  4. P635

    - P635

    Declared "lexus of pinners" - Wood Magazine

  5. P635

    - P635

    Voted Best New Tool - Popular Woodworking

  6. P645L

    - P645L

    The first pinner to 1-3/4" - Doing more with longer pins

  7. P645L

    - P645L

    Rated 5 Out of 5 Stars - Popular Woodworking

  8. P635

    - P635

    Voted BEST BET - Woodworker's Journal

  9. P650L

    - P650L

    The first pinner to 2" - The trim carpenter's best friend

  10. P635

    - P635

    Voted Reader's Choice - Taunton's Tool Guide

  11. P635

    - P635

    Voted Reader's Choice - Taunton's Tool Guide

  12. P635

    - P635

    Voted Reader's Choice - Taunton's Tool Guide

  13. GCP650

    - GCP650

    The first and only 2" cordless pinner

  14. GCP650

    - GCP650

    Most Innovative Cordless Finish Nailer - PTIA Award Winner

  15. GCP650

    - GCP650

    Best Nailer - Popular Mechanics Tool Award

  16. GCP650

    - GCP650

    Best Power Tool - AWFS Visionary Award Winner

  17. P635L

    - P635L

    The Best Just Got Better - Celebrating 20 years of the iconic P635

0622

19960622

1st Grex Pinner

P630

2000P630

The first pinner with innovative self-adjusting magazine

P635

2004P635

A revolutionary pinner designed for the discerning craftsman

P635

2005P635

Declared "Nexus of Pinners" - Wood Magazine

P635

2005P635

Voted Best New Tool - Popular Woodworking

P645L

2006P645L

The first pinner to 1-3/4" - Doing more with longer pins

P645L

2007P645L

Rated 5 Out of 5 Stars - Popular Woodworking

P635

2007P635

Voted BEST BET - Woodworker's Journal

P650L

2007P650L

The first pinner to 2" - The trim carpenter's best friend

P635

2008P635

Voted Reader's Choice - Taunton's Tool Guide

P635

2009P635

Voted Reader's Choice - Taunton's Tool Guide

P635

2010P635

Voted Reader's Choice - Taunton's Tool Guide

GCP650

2019GCP650

The first and only 2" cordless pinner

GCP650

2019GCP650

Most Innovative Cordless Finish Nailer - PTIA Award Winner

GCP650

2019GCP650

Best Nailer - Popular Mechanics Tool Award

GCP650

2019GCP650

Best Power Tool - AWFS Visionary Award Winner

P635L

2024P635L

The Best Just Got Better - Celebrating 20 years of the iconic P635

THE GREX P6 SERIES

P630
P630
No frills
workhorse 		P635L
P635L
The lexus
of pinners 		P650L
P650L
Trim carpenter's
best friend 		P650LXE
P650LXE
The SUPER
PINNER 		GCP650
GCP650
The Only 2"
Cordless Pinner
Power source Pneumatic Pneumatic Pneumatic Pneumatic Gas
Max fastener length 1-3/16" 1-3/8" 2" 2" 2"
Min fastener length 3/8" 3/8" 1/2" * 3/8" 3/8"
Auto Lock-out n/a Yes Yes Yes Yes
Lock-Out Over-Ride n/a One Touch Manual One Touch n/a
Edge Guide n/a Yes n/a Yes Yes
Safety type Dual Trigger Dual Trigger Dual Trigger Contact Safety Contact Safety
Exhaust Top Rear Rear Rear Top
No Mar tip n/a Yes Yes Yes Yes
Cutaway Magazine n/a Yes Yes Yes Yes
On board storage - Wrench & No mar tip n/a Yes Yes Yes Yes
Tool weight 2.1 lb 2.4 lb 2.68 lb 3.25 lb 3.75 lb
Tool length 7.75" 7.75" 7.75" 8.25" 8.5"
Tool height 6.75" 7.5" 8.75" 9.75" 10.25"
Tool width 1.5" 1.75" 1.5" 2" 2.75"

* Tool can fire 3/8" pins, but lockout override button will need to be depressed.

P630
P630 No frills workhorse

Power source

Pneumatic

Max fastener length

1-3/16"

Min fastener length

3/8"

Auto Lock-Out

n/a

Lock-Out Over-Ride

n/a

Edge Guide

n/a

Safety type

Dual Trigger

Exhaust

Top

No mar tip

n/a

Cutaway magazine

n/a

On board storage - Wrench & No mar tip

n/a

Tool weight

2.1 lb

Tool length

7.75”

Tool height

6.75”

Tool width

1.5”
P635L
P635L The lexus of pinners

Power source

Pneumatic

Max fastener length

1-3/8"

Min fastener length

3/8"

Auto Lock-Out

Yes

Lock-Out Over-Ride

One Touch

Edge Guide

Yes

Safety type

Dual Trigger

Exhaust

Rear

No mar tip

Yes

Cutaway magazine

Yes

On board storage - Wrench & No mar tip

Yes

Tool weight

2.4 lb

Tool length

7.75”

Tool height

7.5”

Tool width

1.75”
P650L
P650L Trim carpenter's best friend

Power source

Pneumatic

Max fastener length

2"

Min fastener length

1/2" *

Auto Lock-Out

Yes

Lock-Out Over-Ride

Manual

Edge Guide

n/a

Safety type

Dual Trigger

Exhaust

Rear

No mar tip

Yes

Cutaway magazine

Yes

On board storage - Wrench & No mar tip

Yes

Tool weight

2.68 lb

Tool length

7.75”

Tool height

8.75”

Tool width

1.5”
P650LXE
P650LXE The SUPER PINNER

Power source

Pneumatic

Max fastener length

2"

Min fastener length

3/8"

Auto Lock-Out

Yes

Lock-Out Over-Ride

One Touch

Edge Guide

Yes

Safety type

Contact Safety

Exhaust

Rear

No mar tip

Yes

Cutaway magazine

Yes

On board storage - Wrench & No mar tip

Yes

Tool weight

3.25 lb

Tool length

8.25”

Tool height

9.75”

Tool width

2”
GCP650
GCP650 The Only 2" Cordless Pinner

Power source

Gas

Max fastener length

2"

Min fastener length

3/8"

Auto Lock-Out

Yes

Lock-Out Over-Ride

n/a

Edge Guide

Yes

Safety type

Contact Safety

Exhaust

Top

No mar tip

Yes

Cutaway magazine

Yes

On board storage - Wrench & No mar tip

Yes

Tool weight

3.75 lb

Tool length

8.5”

Tool height

10.25”

Tool width

2.75”

WHY GREX PINS?

Not all brands of 23 gauge pins are created equal. Because 23 gauge pins are extremely fine, setting high standards for each of these attributes is much more critical than larger brad and finish nails. All Grex 23 Gauge Pins are manufactured from precision drawn wire to guarantee consistent accurate pin dimensions. And the tensile strength of the wire used is optimized for each of the different pin lengths.

These qualities minimize the potential for nail jams and prevent damage to your tool. They also make it possible for the pins to penetrate through very hard woods - that's any pin length ranging from 3/8" up to 2". We have proven results for these pins with your Grex Pinner, but they will surely make any 23 gauge pin nailer work better.

  • Manufactured to high standards to ensure consistency.
  • Precision drawn wire for accurate pin dimensions.
  • Wire tensile strength optimized by pin length
  • The most comprehensive range of 23 gauge pins in the industry.
  • Available in 14 different lengths from 3/8" to 2".
  • Available in standard galvanized and stainless steel.
  • Available in 10,000 pins per box or smaller 2,500 pin pack.

Note: All grex pins are manufactured to metric lengths. The imperial lengths noted on the packaging represent the closest fractional approximation.

VIEW TABLE OF PINS

SUPPORT DOCS

MANUAL

MANUAL

DOWNLOAD PDF

DIAGRAM

DIAGRAM

VIEW

PARTS KITS

PARTS KITS

P635KB - DRIVER KIT P635KD - O-RING KIT P635KC - TRIGGER KIT

FAQs

The primary difference among our 23 Gauge Headless Pinners is the maximum fastener length the tool can drive and its power source. See here. All these tools can drive pins as short as 3/8". Beginning with the P635, new features were added and carried out for all subsequent models. These features, not found in the P630, include rear exhaust with silencer, no-mar tip, stepped magazine, large fastener viewing window, spring loaded magazine latch, and Auto Lock-out, which prevents empty firing and alerts the user when reloading is necessary.

It all depends on the intended application. If you're primarily working in the shop, building cabinets or furniture, then the 1-3/8" maximum pin length of the P635L is usually sufficient for all your applications. If instead you do more on-site installation work, such as baseboards and hanging ceiling crown, then you'll need the full 2" pin length capacity of the larger Grex pinners.

Each of the 3 Grex 2” pinner models have their own unique set of advantages. The P650L offers the smallest body, has a double trigger safety and is the most nimble and quickest to operate. The P650LXE has a nose contact safety and a larger body that offers significantly more power. It can drive 2” pins into solid hardwoods at 90psi and is great for those working off site, using smaller compressors that tend to spend most of it time below 100psi. The GCP650 doesn’t need a compressor at all. It operates off of a gas canister and 2 AAA batteries and, as of this writing, it's still the only cordless 2” pin nailer on the market.

For those that don't need all the features of the P635L and would like to save some money, then the P630 is a perfect alternative. It's a no frills tool, but still offers the same auto sensing magazine and ability to drive pins up to 1-3/16" long (just 3/16" shy of the P635L's maximum pin length).

When the magazine is down to approx. 6-7 pins, the Auto Lock-out mechanism activates and locks the primary trigger to prevent empty firing. This alerts the user to reload more fasteners. The remaining fasteners act as a "reserve tank" and can be driven by depressing the Lock-out Override (not available on all models). This allows the user to complete what they’re doing until re-loading is more convenient. i.e. when up on a ladder installing crown.

The main reason folks love their Grex pinners is that sense of fulfillment in working with a tool that is simply at the top of its game: a visually and functionally refined product that is the result of over 20 years of pinner evolution combined with the pride of craftsmanship that our employees have when building pinners that carry the Grex name. Put one in your hand, open the magazine, slide in some pins and you’ll see what we mean.

While Grex pinners tend to be a little more expensive than other brands, they also offer some things that others don’t. The most advanced and ergonomic features like perfect balance, muffled rear exhaust, larger sighting windows, auto-adjust magazines, auto lock out, one touch lock out override, stepped magazines that allow you to get right into corners, swivel couplings to take the strain off the hose, and removable soft tips for softwoods and for pinpoint placement of fasteners.

Your Grex pinner will also tend to perform better than other brands due to the manufacturing tolerances and power that enable you to shoot straight and into the hardest woods. You won’t have a lot of problems with your Grex pinner either. It’s made of aluminum and hardened steel, inside and out, and built to the highest standards of quality.

But only you can decide whether a Grex is the best pinner for you.

Each Grex pinner comes in a plastic carrying case with a pair of safety goggles, a bottle of tool oil, a set of hex (allen) keys and a comprehensive owner's manual.

Designed and QC’d in the US. Tools and parts manufactured in Taiwan.

We only offer our products through authorized dealers and distributors. Please use our dealer finder to find a dealer near you.

Grex pinners must be lubricated to function properly and minimize internal wear. Put one to two drops of tool oil into the air inlet for approx. every 3,000 to 5,000 pins driven. If an in-line oiler is used, lubrication through the air inlet is not required. Do not over lubricate your tool. Doing so may also effect your tool's performance. Typically, if you notice oil coming out from the nose area when you drive pins, it's an indication that too much oil has been used.

Replacement parts are available for any part of any Grex pinner from select dealers. Please contact us to locate the appropriate dealer for the parts that you need.

All Grex power tools are warrantied against manufacturing defects for one year from the original date of purchase. Exceptions include normal wear parts, such as o-rings, seals, and drivers. Make sure to register your product as soon as you can.

Please contact us to find your nearest Grex authorized repair center or fill out this form to have your tool directly repaired by Grex.

Absolutely. All Grex pinners are designed and tested to drive its respective maximum pin length into traditional hardwoods such as red oak and maple. That's up to 2" long for the P650L, P650LXE and GCP650 models. These tools will even drive into hardwoods, such as, Beech or even Ipe when the operating pressure is increased accordingly. Please note, driving pins into harder woods will wear out the driver quicker.

Yes, up to 2" long into the toughest woods. But, there will be times it won't. Depending on the wood grain, sometimes an 18 gauge brad won't even drive in straight. Of course, the shorter the pin, the more likely it will drive in straight. But the quality of the fastener is also extremely critical, especially for long pins. The carbon content of Grex pins is adjusted for each pin length to optimize its tensile strength. This maximizes its ability to penetrate straight into the wood. The precision manufactured parts on all Grex pinners also increase the chances of pins driving in straight. By positioning the tool perpendicular to the wood grain, the chiseled end of the pins will tend to cut the grain instead of following it off to the side.

Your Grex pinners are designed to only drive headless pins. When we developed our first pinner over 20 years ago, our testing showed that a tool that drives both headless and slight headed pins had a significantly higher risk of jamming which eventually resulted in tool damage. Because of this, we decided to use purely headless pins. Keep in mind that for any fastener, whether it be a framing nail or a pin, it's the friction from the fastener shank that provides the holding power; not the head. That, plus the toeing or angling of the fastener towards one another. And if you want to use a 23 gauge fastener because of the small hole it leaves, then why put a head on it to make it bigger?

Although any brand of 23 GAUGE HEADLESS PINS are compatible with your Grex pinner, Grex pins are highly recommended due to the optimal tensile strength of the steel used. Some "aftermarket" pins are so soft that they will actually deflect in cedar and pine. Others will crumple on the surface of your workpiece because they do not have the stiffness to penetrate maple, oak or other hardwoods. Using poor quality pins can cause jamming and damage to your tool because their tolerances are not controlled or they have excess glue drips all over them. Some other pins are OK for softwoods and softer hardwoods like cherry but not for real hardwoods like maple and equatorial hardwoods. Grex pins really are the stiffest pins on the market. Since 23 gauge pins are extremely fine, using quality fasteners is much more critical than traditional finish nails such as 18 or 16 gauge brads.

Any Grex dealer that sells our pinners will also carry a variety of Grex 23 gauge headless pin lengths. We recommend contacting the dealer from where you purchased your tool. Or please use our dealer finder to locate your nearest Grex dealer.

The Auto-Adjust magazine eliminates the need to make any adjustments to the magazine when using any fastener length. This is accomplished by auto sensing fingers that ride above the strip of fasteners in the magazine to guarantee their alignment. The magazine accommodates 1-3/16" and 1-3/8" pin lengths, so it’s not possible to add an additional finger for 1-1/4" length pins. Its use is highly discouraged because they can move out of alignment inside the magazine. This will result in jamming and/or damage to the tool.

The P650L can drive 3/8" length pins. However, because of the Auto-Lockout feature in the P650L, the trigger will lock by default if 3/8" pins are used. The tool can drive 3/8" pins as long as the Lock-Out Override is depressed. Due to the inconvenience of constantly needing to depress the override, we do not recommend the use of the P650L if 3/8" length pins are heavily used.

Pressure required is application dependent. When working with traditional hardwoods such red oak and maple, maintain an operating air pressure of 100psi. For pin lengths longer than 1-3/8", maintain the operating air pressure at 110psi. (P650LXE operates on a different PSI range, please consult manual) For harder woods, your Grex pinner can be operated at a higher air pressure. Due to the precision required to drive 23 gauge pins, optimal operating air pressures are much more crucial to minimize wear and prevent damage to your tool. Insufficient operating air pressures will prevent your tool from setting pins all the way into your work piece and also cause the driver to drive pins in at insufficient speeds. This forces the driver to “push” rather than quickly “punch” pins into the work piece resulting in excessive stress on the driver tip, which will lead to increased wear and damage. However, excessive operating air pressures may set pins too deep into your work piece, damage the work piece, over stress the tool and increase driver wear.

Almost any compressor that can supply the appropriate pressure to operate your Grex pinner will work. Refer to your owner's manual for detailed instructions on operating your Grex pinner at the appropriate air pressure. All Grex pinners consume very little air, less than 2/1000ths of a cubic feet per cycle at any given operating air pressure. However, operating the tool at sufficient air pressures is much more critical. The typical operating range for your Grex pinner is 90 to 100psi. When driving pins longer than 1-3/8" the operating pressure must be maintained at 110psi (P650LXE operates on a different PSI range, please consult manual). For harder woods, your Grex pinner can be operated at a higher air pressure. So, when choosing an air compressor, the most important specification is the maximum pressure it can sustain. Although air consumption of your Grex pinners is low, choosing a compressor with a decent sized tank (2+ gallons) is necessary to maintain the air pressure to the tool. The smaller the tank, the quicker the PSI drops with each shot you take. If your compressor’s kick-in pressure is lower than your intended operating pressure, this will mean you’ll be operating your tool below the recommended pressure. Make sure you can adjust the kick-in pressure so the compressor begins pumping again before the air pressure drops below the required operating pressure. Refer to your compressor’s owner’s manual for more information on your compressor’s settings.

The most common reason for this problem is insufficient operating air pressure. Check the line pressure coming from your compressor. Generally speaking, when working with traditional hardwoods such red oak and maple, maintain an operating air pressure of 100psi. For pin lengths longer than 1-3/8", maintain the operating air pressure at 110psi. (P650LXE operates on a different PSI range, please consult manual) For harder woods, your Grex pinner can be operated at a higher air pressure.

The second most common reason is not holding the tool down firmly. Make sure the nose of the tool is held firmly onto the work piece and do not let the tool bounce back when a pin is driven. Because these fasteners are so fine, even the smallest gap left between the tool nose and work surface will prevent the tool from setting the pin all the way.

If the issue is not dependent on the pin length used, then it's possible that the driver is damaged. Please contact us to find your nearest Grex authorized repair center or fill out this form to have your tool directly repaired by Grex.

No. 23 gauge pins do not have sufficient strength to penetrate steel and this could cause damage to the driver.

Due to the kind of work folks use pinners for, a depth of drive knob is not practical. Your Grex pinner arrives from the factory with a set depth of about 10 to 20 thousandths of an inch. This depth is primarily a function of the distance to which the driver blade extends out of the pinner when shooting. Depending on the hardness of your workpiece, a greater setting depth may be possible by increasing air pressure.

The No-Mar tip found on all other Grex pinners is not compatible with the P630. There are notches designed on the nose piece of the other pinners to receive small tabs on the inside face of the No-Mar tip to lock it in place. Although a No-Mar tip can be placed onto the nose of the P630, it will not lock in place and can potentially fall off during operation of the tool.

The No-Mar tip is exactly the same for these two Grex pinners. Grex Part # 63520-G / or 63520-P5 (5 pack). But please note, the P650LXE and GCP650 use a different No-Mar tip.
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the Grex Advantage

a lifetime of use
a lifetime of use

Purposefully created with serviceability in mind so you can get a life-time of use. While others constantly “update” their tools and discontinue availability of replacement parts, forcing you to buy new tools, we’re committed to keeping our tools working for generations. The P635L uses the same core parts as the original P635. Whether you need to keep your P635 going or you’re investing in an additional P635L, rest assured that we’ll have the parts you need to keep them working for years to come.

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UNMATCHED CUSTOMER SUPPORT

Alongside our outstanding tool features, what truly sets our company apart is our unwavering commitment to industry leading customer support. Your phone calls are still answered by a live person. When you reach out to us, you'll be connected with a knowledgeable GREX expert right here in the USA. Experience the Grex difference today.

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