Precision Engineering & Torque Performance
Compliant with the ISO 2380 hex standard, it maintains side length tolerances within ±0.03mm, ensuring a gap-free fit with M8-M10 screws. Torque transmission efficiency is 25% higher than ordinary bits, delivering a stable 20N·m output to effortlessly handle screw fastening in hard materials like carbon steel and cast iron.
Rounded corner technology minimizes stress concentration, preventing screw stripping or bit cracking during high-intensity operations to ensure task stability.
Premium Materials & Durability
Forged from chrome-molybdenum-vanadium alloy steel in one piece, it achieves HRC60 hardness after quenching and tempering, offering superior wear and impact resistance—three times the service life of standard steel bits.
A double-layer nickel-plated surface passes the 96-hour salt spray test, providing robust rust resistance for reliable use in harsh environments such as 潮湿 (humid) and oily conditions.
An integrated strong magnetic ring (suction ≥4N) securely holds screws, reducing the risk of drops during overhead or confined-space operations.
User-Centric Design & Efficiency
The 7.94mm standard interface is compatible with 主流 (mainstream) electric/pneumatic tools from brands like DeWALT and Ingersoll Rand. A quick-release buckle enables bit changes in under 1 second, significantly enhancing workflow efficiency.
The shank features anti-slip knurling and ergonomic contours for comfortable, stable grip during prolonged use. Laser-engraved specifications and an orange coding ring facilitate rapid identification in complex work scenarios.

Conclusion: The 5/16" hex screwdriver bit excels in "high torque, rugged durability, and operational ease," meeting diverse heavy-duty requirements from heavy machinery repair to large-scale equipment assembly. Its combination of standardized precision and robust design makes it an essential tool for professionals prioritizing reliability and efficiency.