Bolt M10x1.25 Fuji Lock Nut (Packet of 10) Refill

The Bolt M10x1.25 Fuji Lock Nut Refill Pack provides a ready supply of replacement lock nuts for motorcycle maintenance and restoration. Designed to the M10 fine-thread standard (1.25 mm pitch) common across a wide range of Japanese and European motorcycles, these lock nuts are sold in a convenient pack of ten.

Bolt Motorcycle Hardware is a specialist fastener brand focused on OEM-grade hardware for powersports applications. This refill pack suits workshops and home mechanics who work through hardware regularly and want consistent, purpose-matched replacements on hand.

• M10x1.25 fine thread — suits a wide range of Japanese and European motorcycle applications
• Fuji lock nut style for secure fastening under vibration
• Refill pack of 10 nuts for workshop or home-garage stock
• Sold under Bolt Motorcycle Hardware, a dedicated powersports fastener brand

• 10 × M10x1.25 Fuji Lock Nuts

Clean threads on the mating bolt with a wire brush or thread chaser before installing a new lock nut — debris or corrosion on the threads affects clamping force.
Always torque to the OEM specification for the specific fastener location; refer to your motorcycle's service manual.
Lock nuts are a prevailing-torque fastener; inspect for visible damage or deformation before reuse and replace if in doubt.
Do not apply thread-locking compound (e.g. Loctite) to a lock nut — the locking feature is built into the nut itself.
Store unused nuts in a dry environment to prevent surface oxidation that could affect thread engagement.
Discard any nut whose locking feature feels loose or that spins on the thread without resistance — it has lost its prevailing torque.