8.8 Grade Carbon Steel M10x25mm Full Thread Nylon Metric Hex Hexagon Head Cap Screw Bolt Black 25Pcs | Canada Flange Head Bolts Advantage: Left-hand reverse thread design, The hex head is not easy to slip during the rotation process. RS PRO Bright Zinc Plated Steel Hex, Hex Bolt, M10 x 25mm | RS The flange part acts as a flat washer, which can be locked more firmly. Black oxide 8.8 grade Carbon steel square head bolts Products from The bolt is a standard part and should be measured with a standard vernier caliper. Widely used in the construction industry, machinery industry, light industry, household, etc. uxcell Metric M10x25mm Hex Flange Bolts Left Hand Thread 8.8 Grade Carbon Steel Black 2pcs It is commonly used in assemblies that do not provide sufficient clearance for a conventional wrench or socket. To loosen a reverse threaded screw, you turn it clockwise. To tighten a reverse threaded screw, you turn it counterclockwise.