Superior Parts SP 877-323C Aftermarket Japanese Carbide Piston Driver for Hitachi NR83A + A2 Replaces 890385, 885915
Aftermarket Hitachi Framing Nailer Piston Driver. This is a generic replacement driver with o-ring for the Hitachi NR83A, NR83A2, NR83A2(S) framing guns. Aluminum is crimped into the UNI-LOK grooves of the shaft to prevent unscrewing. Hardened steel lock tite and micro-mechanically locked piston driver interface. Guaranteed never to unscrew.
Features:
Japanese Carbide - SKH-9
Heat treated to Rockwell hardness 64-66
Aerospace grade #2024 Aluminum piston
Mechanically locked piston driver interface
In field tests it lasts significantly longer than the US S7 steel