This is a T10 Torx (star) 1/4" hex driver bit, 25 mm in overall length, designed for driving T10 Torx head fasteners in confined or precision applications. The primary use is to transfer torque from a 1/4" hex bit holder, screwdriver or power driver to small Torx screws commonly found in electronics, appliances and light mechanical assemblies.

The bit is manufactured from S2 tool steel and is heat treated and tempered to provide a typical hardness in the region of 58–62 HRC, giving the required wear resistance and edge retention for repeated use. The 1/4" (6.35 mm) hex shank conforms to DIN 3126 / ISO 1173 interchangeability dimensions (C 6.3) ensuring compatibility with standard quick-release chucks and bit holders. The Torx profile is produced to industry Torx (TX) dimensional tolerances so it fits T10 fasteners precisely. The bit carries a black oxide / phosphate style finish to give additional corrosion resistance and to reduce light surface wear; other finishes may be specified by manufacturer batch.

Typical applications include assembly and repair of consumer electronics, telecommunications equipment, precision instruments, computer hardware and small appliances, as well as light automotive and bicycle work where Torx security or star drive screws are used. The 25 mm length is particularly well suited to tight access points and internal assemblies where a short, rigid driver is required.

Key benefits of this 1/4" hex T10 bit are its material strength and hardness for long life, dimensional compatibility with industry-standard bit holders and drivers, and the corrosion-resistant finish which helps prevent seizing and premature deterioration. The accurate Torx tip reduces cam-out and distributes torque evenly across the screw head, lowering the risk of fastener damage compared with slotted or Phillips drives.

Duchy Fasteners stocks this T10 1/4" hex 25 mm bit individually and in multi-packs, and holds a broader range of Torx sizes and lengths to suit hand and power tool applications. If you need different lengths or a complete set, please check our available sizes and pack options.