M7 NE-399 3/8-Inch Right-Angle Air Impact
The M7 NE-399 uses a right-angle, tapered head to approach fasteners differently from a pistol-grip impact. Select this layout when the head and socket can enter the work position while the 10.375-inch body remains clear of surrounding components.
Specifications and included details
- 3/8-inch square drive with right-angle tapered head and jumbo-hammer clutch.
- Listed forward torque 180 ft-lb and maximum reverse torque 180 ft-lb.
- 10.375-inch tool length and 4 lb listed weight.
- 7,500 RPM free speed, 2.45 CFM average consumption and 90 PSI specification.
Before ordering
Measure head clearance together with the socket; body length alone does not establish access. It remains a pneumatic impact, despite the ratchet-like layout. Use correctly sized impact-rated sockets and verify specified final fastener torque with a suitable torque wrench.
Product questions and answers
Is this an air ratchet because it has a right-angle head?
The NE-399 is listed as an air impact wrench with a jumbo-hammer clutch. Its head layout does not make it a conventional air ratchet.
Will the tapered head fit any recessed fastener?
No universal clearance is established. Check the head dimensions, socket depth and space for the body and hose against the actual work position.
Do the matching 180 ft-lb figures establish calibrated operation in both directions?
No. They are listed performance specifications. They do not establish torque-wrench calibration or a precise final tightening setting.
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