Aftermarket Hitachi Nailer Piston Driver. This is a generic replacement driver with o-ring for the Hitachi NR83AA2, NR83AA3 & NR83AA4 guns. This comes with a patented locking mechanism which will not allow the driver to unscrew from the piston. Aluminum is crimped into the UNI-LOK grooves of the shaft to prevent unscrewing. Guaranteed never to unscrew.

Features:

• Heat treated tool steel 6150 - Rockwell hardness 50-52
• Aerospace grade #2024 Aluminum piston
• Mechanically locked piston driver interface

Compatible with:

Metabo HPT (Hitachi)

• NR83AA3 Clipped Head Framing Nailer
• NR83AA2 3-1/4" Clipped head Framing Nailer
• NR83AA4 3-1/4" Paper Collated Framing Nailer
• NR83AA5M 3-1/4 Inch Clipped Head Fram Nailer