The crank bolt adopts high-precision cutting technology, the thread is very precise, clean and sharp, and the deep transparent thread ensures a firm fixation, which is not easy to deform and slide during use.
Bicycle crank bolts are forged with high-quality carbon steel material, black oxidation treatment, with high load bearing rate, high hardness and wear resistance, stable, wear resistant, strong, not easy to deformation, not easy to rust and corrosion, good workmanship, longer service time, higher efficiency.
You will harvest 4 bicycle hexagon crank arm bolts, enough to meet your daily use and replacement needs, you can also share with friends and family who need to update the screws, simple installation, can be installed and disassembled with a wrench, very convenient.
The screw thread of the crank arm fixing bolt is also very neat and even, and there is no raw edge to the touch, for a tighter installation. The force is uniform, not easy to slip, and the fastening effect is good, making the product more sturdy.
Bike bottom bracket bolts are a good alternative to crankshaft set repairs and are suitable for any square hole crank set and bottom bracket. Suitable for square tapered bottom bracket with flange.Fits most cartridge BB. Widely used, suitable for all kinds of bicycles.
Description
Product name: Crank arm fixing bolt
Product material: Steel
Product color: Black
Size: Diameter: M8/0.31 inches
Length: 18mm/0.71 inches
Hexagonal width :13mm; Head height :7mm;
1. If your crank arm is oval and keeps falling off. When replacing the bolt, keep the crank arm connected for a while, but eventually it will fall off. If this happens, you will need a new crank arm. When the square cone becomes oval due to wear, it will withdraw from the bolt.
2. If your crank arm bolt is stripped, this is usually due to the bottom bracket shaft thread, not the crank, in which case you will need a new bottom bracket shaft.
Packing contents: M8x18mm mm bicycle crank arm bolts*4pcs