Fits: Hitachi NR90AEHeat treated tool steel 6150 Rockwell hardness 50-52Aerospace grade number 2024 Aluminum pistonMechanically locked piston driver interface
Aftermarket Hitachi Nailer Piston Driver. This is a generic replacement driver with o-ring for the Hitachi NR90AE, and NR90AE(S) guns. This comes with a patent-pending locking mechanism which will not allow the driver to unscrew from the piston. Aluminum is crimped into the unlock grooves of the shaft to prevent unscrewing. Guaranteed never to unscrew.
Brand: Superior Parts, Model: SP 885-918