Superior Parts SP EA0138 Aftermarket UNILOK Piston/Driver Assembly Compatible with Senco FinishPro 41XP

The Superior Parts SP EA0138 is a generic replacement Piston Driver with O-Ring that’s compatible with Senco FinishPro 41XP guns. Manufactured with our UNI-LOK technology that hydraulically crimps the grooves of the shaft to ensure the piston driver never unscrews. Drivers do not unscrew even at 80 N-M(59ft-lbs) during torque testing. The aluminum piston driver is heat treated to provide strength, durability and performance.

• Compatible with Senco FinishPro 41XP Finish Nailer.
• Designed with our UNI-LOK technology that hydraulically crimps the grooves of the shaft to ensure the piston driver never unscrews. | The aluminum piston driver is heat treated to maintain strength and durability for excessive use and wear and tear.
• Driver is annealed at the threaded end to lower the hardness and make the material more ductile for improved shock resistance. | Rockwell Hardness Testing: Standard alloy drive hardness ranges between 56-59 HRC along the shaft.
• Manufactured from, Aerospace-grade #2024 aluminum | All Superior Parts drivers are crimped at the aluminum base and can withstand a torque of 80 N-M (59ft-lb) before the aluminum shears off.
• Specifications: Material: Premium Grade Aluminum | Hardness: 59 HRC