The head of the hexagon bolts with split pin hole is hexagonal and can be tightened with a wrench. A small hole is drilled on the shank without threads. This small hole can be inserted with a cotter pin for locking the bolt.
Hexagon bolts with split pin hole are applied in car races, and they can ensure the safety of suspension and transmission system components. Cotter pins can prevent bolts from loosening under vibration conditions. Mechanics use them on rally cars or motorcycles.
Farmers installed the hexagon bolt with split pin hole on shank on plows, harrows and tillers. Cotter pins can ensure that the bolts are firmly fixed in rocky fields and rough terrain. You only need to drill once and insert the pin. There is no need to retighten it. They are easy to install, firmly connected and easy to maintain.
Hexagon bolt with split pin hole can withstand severe vibrations, so they are suitable for forestry equipment such as chain saws or wood splitters. Cotter pins can lock the blades or hydraulic components in the correct position. They have a long service life and can save you time and money.
The installation of hexagon bolts with split pin hole is divided into two steps. First, tighten the bolts and nuts normally by hand. Then, align the hole on the bolt rod with the slot of the nut and insert the cotter pin. Bend the foot of the pin backward with pliers and lock it in the exact position. If the holes are not aligned, please tighten the nuts slightly. Do not loosen them. Be sure to trim the excess pin length to avoid catching nearby components.