Makita 233433-6 Spare Part - COMPRESSION SPRING 5 HR4011C

Compression Spring 5 — part no. 233433-6 — original Makita replacement spring for the hammer/striker assembly in Makita SDS‑MAX rotary and demolition hammers.

Fits common Makita models including HR4001C, HR4002, HR4010C and HR4011C (listed in Makita parts breakdowns and spare‑parts lists).

This is a small helical compression spring (listed as "Comp. Spring 5") that sits in the impact mechanism to return or cushion the piston/connecting rod during the blow cycle — replace a cracked, flattened or corroded spring to restore hammer action and timing.

Sold as an original Makita spare — keep this Makita spare parts item on hand if you’re repairing one of the compatible hammers; the part number 233433-6 is what you’ll match to the exploded diagram for a direct swap.

Jump straight to the Makita spare parts diagrams:

• Makita HR4001C Parts
• Makita HR4002 Parts
• Makita HR4010C Parts
• Makita HR4011C Parts

Browse our full range of Makita hammer drill parts.