3 PACK 877-323 Aftermarket Piston Driver for Hitachi NR83A NR83A2 NR83A2(S) NR83A3 Framing Nailer - Replaces 877323, 885-915, SP 877-323, SP 885-915, 878-303, 878-649, 877-376

3 PACK 877-323 Aftermarket Piston Driver for Hitachi NR83A NR83A2 NR83A2(S) NR83A3 Framing Nailer - Replaces 877323, 885-915, SP 877-323, SP 885-915, 878-303, 878-649, 877-376

• Compatibility: Fits Hitachi NR83A, NR83A2, NR83A2(S), NR83A3 framing strip nailers. Replaces OEM part numbers 877-323, 885-915, SP 877-323, SP 885-915, 878-303, 878-649, 877-376.
• Material & Hardness: Constructed from heat-treated 6150 tool steel, Rockwell hardness 50-52. Piston machined from aerospace-grade 2024 aluminum for strength and weight optimization.
• Mechanical Locking Design: Aluminum piston is crimped into the Unilok grooves of the steel shaft to prevent separation. Hardened steel thread-locking compound combined with micro-mechanical interface ensures the piston driver will never loosen or unscrew under repeated impact.
• Package Includes: 3 x 877-323 aftermarket piston drivers. Each unit is precision-manufactured to meet or exceed OEM specifications for reliable performance and extended service life.
• Installation Note: Direct replacement — no modification required. Confirm your tool model and existing part number before ordering to ensure compatibility.