Material: Forged with 8.8 grade carbon steel material, black oxide finish, with a high load rate, high hardness and wear resistance, strong and durable.
Advantage: Left-hand reverse thread design, The hex head is not easy to slip during the rotation process. The flange part acts as a flat washer, which can be locked more firmly.
Application: It is commonly used in assemblies that do not provide sufficient clearance for a conventional wrench or socket. Widely used in the construction industry, machinery industry, light industry, household, etc.
Note: To tighten a reverse threaded screw, please turn it in counterclockwise. The bolt is a standard part and should be measured with a standard vernier caliper.