P645 - 23 Gauge 1 3/4" Length Headless Pinner

Fulfilling the demand for longer headless pins, the GREX P645 is an upgrade to the P635 and P630. The GREX P645 drives fasteners ranging from 3/8” up to 1 3/4”; a total of 13 different lengths. What's more, the original self-adjusting magazine design eliminates the need to manually adjust for each different fastener length.

The high tolerance precision machined hardened steel driver, Posit-Lock™ nose cover and nose guide assembly aligns and seats the headless pin for optimal drive performance. What is Posit-Lock™ - it's tight tolerance, durability and functionality that reduces jams to a minimum.

The P6 Series comes in seven different designs: P630, P635, P645, P645L, P650, P650L and the P650LXE.

GREX, demanded by Pros, for more than 20 years has helped professionals rise to the top of their trade. Now explore.


- Seven different designs: P630, P635, P645, P645L, P650, P650L, P650LXE

- Drives 23-gauge headless pins ranging from 3/8” to 1 3/4” in length

- Posit-Lock™ nose cover for tight tolerance and access to the pin chamber

- Patented magazine self-adjusts for 13 different fastener lengths

- Narrow nose design accesses more tight areas and angles for detail work

- Precision machined and aluminum cylinder, piston valve, and firing valve

- Lightweight aluminum body designed for mobility and all day continuous use

- Powerful motor to drive fasteners through hardwood

- Double trigger safety lock prevents accidental firing

- No-mar rubber tip prevents marring of work surface

- No-mar guidelines for accurate pinning

- Fastener indicator window shows pin supply

- Swivel air coupler helps keep your air hose tangle-free

- Drop-in fastener loading for quick and easy reloading

- Belt hook keeps your GREX tool at your side; left or right mounted

- Rear exhaust with silencer reduces noise and directs exhaust air away

- Rear magazine cap with hex wrench and spare no-mar tip storage

- Rubber handgrip for a firm comfortable grip


Dimensions: 8.75"H x 7.75"L x 1.5"W (22.2 x 19.7 x 3.8 cm)

Weight: 2.68 lbs. (1.2 kgs.)

Operating Pressure: 60 ~ 110 psi (4 ~ 7.6 bars)

Fastener Type:23 Gauge Headless Pins

Fastener Range: 3/8" ~ 1 3/4" (10mm ~ 45mm) excluding 1 1/4" (32mm)

Fastener Capacity: 1 strip (approx. 100 pins)

Air Inlet: 1/4" (6mm) NPT male plug


Light wood assembly, Finish and trim work, Molding and decorative trim, Dowel and joint pinning, Mirror and picture frame assembly, Lightweight panelling, External softwood trim, Rattan furniture, Glazing strips, Craft work, Window beading, Display and sign work, Etc...

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