RUKO STB-HSS-Gr.7 3/8-Inch Drive 1/2-Inch Hex Socket Bit, HPQ High-Performance Alloy Steel, Chrome-Plated

Engineered for high-torque applications, this RUKO socket bit delivers a 1/2-inch hex profile on a 3/8-inch square drive, forged from HPQ® high-performance alloy steel for exceptional durability and precision fit.

Overview

The RUKO STB-HSS-Gr.7 is a professional-grade socket bit designed for hexagon socket screws and bolts. Its 3/8-inch square drive conforms to DIN 3120 / ISO 1174, ensuring compatibility with standard ratchets, extension bars, and accessories. The bit's hex size of 1/2 inch (12.7 mm) provides a precise fit for corresponding fasteners, minimizing wear and preventing cam-out.

What stands out

• HPQ® high-performance alloy steel construction for high strength and long service life
• Chrome-plated finish for corrosion resistance and easy cleaning
• Forged manufacturing process for superior toughness and durability
• High-tolerance manufacturing ensures exact fit in hex socket screws

Technical details

• Drive size: 3/8 inch (9.525 mm)
• Bit type: Hexagon (Allen)
• Bit size: 1/2 inch (12.7 mm)
• Material: HPQ® high-performance alloy steel
• Finish: Chrome-plated
• Drive standard: DIN 3120 / ISO 1174
• Application: Hexagon socket screws and bolts
• Manufacturing process: Forged

Our verdict

A reliable and precise socket bit for demanding professional and industrial use, built to withstand high torque and repeated use.