8mm hex crank arm bolts
$ 6.99
M8 x 20mm cro-mo steel crank arm fixing bolts with plastic dust shields.
These fit all square taper cranksets & bottom brackets using 8mm (M8x1mm) bolts.
ⓘ Put a drop of blue thread locker on the threads before installing to keep them from backing out on you and needing constant adjustment.
• chrome plated steel
• thread length: 20mm
• sold in pairs
Proper tightening is crucial to prevent the crank from loosening and damaging the crank arm.
The recommended torque spec for square taper crank bolts is generally 35-45 Nm (300–400 in-lbs) for most setups.
Tighten bolts in stages to 35-50 Nm, alternating sides, or until securely seated. Do not over-torque, as this can deform the crank/spindle interface.
Be sure to check the bolt tightness after the first few rides, as the arms will typically settle on the spindle and the bolts will require slight re-tightening.