The 5/16" hex bit is specifically designed for medium to high-intensity fastening tasks. With its large size and superior performance, it has become an essential tool in heavy machinery, construction, and installation industries. Strictly adhering to the ISO 2380 hex standard, it maintains a side length tolerance of ±0.03mm, perfectly fitting M8-M10 screws with a gap-free 咬合. Its torque transmission efficiency is 25% higher than that of conventional bits, enabling a stable output of 25N・m of powerful torque, which effortlessly handles hard materials such as high-strength alloys and cast iron.

Forged from one-piece S2 alloy steel and heat-treated to achieve a hardness of HRC60±2, the bit offers excellent impact resistance and is three times more wear-resistant than ordinary steel bits. It remains free from deformation and wear even after prolonged and frequent use. The surface, treated with nickel plating and a Teflon coating, not only passes the 96-hour salt spray test for outstanding rust resistance but also reduces the friction coefficient between the screw and the bit, minimizing the risk of slippage. Some models feature a powerful magnetic ring (magnetic force ≥5N), securely holding large screws and preventing parts from falling during overhead operations.

The 8.0mm standard shank is compatible with mainstream electric wrenches and manual ratchet tools from brands like DeWalt and Makita. The quick-change snap design allows for bit replacement within one second, increasing work efficiency by 50%. The shank, designed with anti-slip wave patterns and ergonomic curves, ensures comfortable grip and precise force application even when wearing thick work gloves. Laser-engraved specifications and eye-catching orange coding rings facilitate quick identification in complex working environments. Whether it's assembling heavy machinery, erecting construction scaffolding, or repairing vehicle chassis, the 5/16" hex bit provides reliable support for professional tasks with its features of "high torque, strong durability, and ease of operation."