When 3/8" drive fastening needs stronger socket retention than a standard ring anvil, the Cleco CWM-375P Pneumatic Impact Wrench gives maintenance crews and production users a compact metal-housing tool with a 3/8" pin anvil drive. The 340 ft-lbs max applied torque supports medium-duty bolting on equipment, fixtures, brackets, and shop assemblies, while the 450 ft-lbs max breakaway torque helps loosen tightened or stubborn fasteners during service work. It's 12,000 RPM free speed helps run fasteners down quickly before impact loading, and the 1,400 BPM impact rate delivers repeated hammer blows for steady pneumatic fastening power.
Part of the CWM Metal Housing Series, the CWM-375P uses an impact mechanism with advanced triple cycle heat treatment to support repeated use in challenging work environments. The pin anvil or pin hole output style provides a more secure socket connection than a friction ring, making it useful where the same socket stays installed for repeated tasks or where socket retention matters during overhead, mobile, or fixture-based work.
Type: Pneumatic Impact Wrench | Series: CWM Metal Housing Series | Model: CWM-375P | Drive Size: 3/8" | Drive Type: Pin Anvil or Pin Hole | Max Applied Torque: 340 ft-lbs / 450 Nm | Max Breakaway Torque: 450 ft-lbs / 610 Nm | Blows Per Minute: 1,400 BPM | Free Speed: 12,000 RPM | Air Consumption: 26.9 SCFM | Length: 5.5" / 140 mm | Weight: 3.3 lb / 1.5 kg | Air Inlet Size: 1/4" | Impacting Sound Level: 89.5 dB(A)
Features:
- Rugged all-metal construction withstands heavy abuse in production, repair, and maintenance environments.
- Soft-touch grip helps protect against slip, temperature transfer, and vibration during repeated fastening work.
- Variable-speed trigger gives the operator precise control during fastener run-down and removal.
- Large lever forward-reverse and speed settings are easy to operate, even with work gloves.
- Impacting mechanism with advanced triple cycle heat treatment supports dependable performance in challenging work environments.
- Pin anvil or pin hole output provides added socket retention for applications where a secured socket connection is preferred.
- Compact 5.5" length and 3.3 lb weight help the tool fit into shop, maintenance, and assembly work without stepping up to a larger impact wrench.
Made in USA: 

Tech Tip: To increase tool performance, extend tool life, and lessen repair costs, use it with a Filter-Regulator-Lubricator FRL)
(Graphic Below is To Highlight Product Features Only, thumbnail photo represents the actual tool.)
Applications:
- Industrial maintenance and MRO: removing and installing fasteners on guards, brackets, pumps, conveyors, and equipment frames.
- Production and assembly stations: running repeated 3/8" drive fastening operations where pin anvil socket retention is preferred.
- Fleet and equipment service: handling repair fasteners, support hardware, and service components within the tool’s torque range.
- Fabrication and fixture work: tightening nuts and bolts on jigs, tooling plates, shop fixtures, and fabricated assemblies.
- Garage and repair-shop use: loosening stubborn fasteners and performing general pneumatic fastening when the air supply can support the tool’s SCFM requirement.
FAQs:
- Q: What is the difference between the CWM-375P and CWM-375R?
A: The CWM-375P uses a 3/8" pin anvil or pin hole output, while the CWM-375R uses a retaining ring output. Choose the pin anvil version when stronger socket retention is preferred, and choose the retaining ring version when faster socket changes are more important. - Q: Is 340 ft-lbs the tightening torque or removal torque?
A: The 340 ft-lbs figure is the max applied torque. The catalog also lists 450 ft-lbs of max breakaway torque, which is the higher force used for loosening fasteners. - Q: What does BPM mean on an impact wrench?
A: BPM stands for blows per minute. It describes how many impact strikes the tool delivers each minute, which helps explain how the wrench transfers repeated hammering force to the fastener. - Q: What air system should be used with this tool?
A: The CWM-375P is a pneumatic tool with 26.9 SCFM air consumption and a 1/4" air inlet. Use it with a properly sized compressor, hose, and FRL so airflow remains stable during repeated impacts. - Q: Can this replace a larger 1/2" impact wrench?
A: Not for every job. The CWM-375P is a 3/8" drive tool rated for 340 ft-lbs max applied torque, so it is best matched to medium fastening work rather than high-torque 1/2", 3/4", or 1" drive applications.

| SKU | Torque Range Max | Breakaway Torque | Blows Per Minute | Free Speed | Air Consumption | Weight | Drive Size | Drive Type | Air Inlet Size | |
|---|---|---|---|---|---|---|---|---|---|---|
| Ft Lb | Nm | Ft Lb | r/min | Scfm | Lb | in | in | |||
| CWM-375P | 340 | 450 | 450 | 1400 | 12000 | 26.9 | 3.31 | 3/8 in | Pin Anvil or Pin Hole | 1/4 |
| CWM-375R | 340 | 450 | 450 | 1400 | 12000 | 26.9 | 3.31 | 3/8 in | Retaining Ring | 1/4 |
| CWM-500P | 850 | 1200 | 1200 | 1200 | 9000 | 39.8 | 5.8 | 1/2 in | Pin Anvil or Pin Hole | 1/4 |
| CWM-500R | 850 | 1200 | 1200 | 1200 | 9000 | 39.8 | 5.8 | 1/2 in | Retaining Ring | 1/4 |
| CWM-750P | 1350 | 2339 | 1725 | 1200 | 6000 | 54 | 10.4 | 3/4 in | Pin Anvil or Pin Hole | 3/8 |
Looking for more information about Cleco Impact Wrench? Click here to view the Catalog
Need help selecting the correct Cleco Impact Wrenches for your application? Please call (800) 608-5210 or email info@intlairtool.com
warning WARNING: This or other products sold on this website may expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
For more information go to www.P65Warnings.ca.gov
