This T15 Torx Star 1/4" hex bit, 25mm long, is a screwdriver bit designed to drive T15 (TX15) Torx fasteners and to be used in 1/4" hex bit holders, ratchets and powered screwdrivers. Its primary use is for assembly and maintenance tasks where the Torx profile delivers positive engagement and improved torque transfer compared with slotted or Phillips heads.

The bit is manufactured from S2 tool steel and is heat treated and tempered for wear resistance and torsional strength. The surface is given a black phosphate/oxide finish to provide basic corrosion protection and to reduce glare. The Torx profile conforms to recognised Torx/TX dimensional tolerances (manufactured to industry ISO/DIN profile standards) while the 1/4" hex drive shank matches standard 1/4" hex holder dimensions for interchangeability with common bit chucks and sockets. There are no threads on this product; it is a plain hex shank bit intended for push-fit or chucked use.

Typical applications include electronics assembly, furniture fitting, domestic appliance servicing, automotive trim and interior work, and light engineering where T15 fasteners are specified. The Torx star geometry offers reduced cam-out and allows higher applied torque without damaging the fastener head, making this size common in precision assembly and manufacturing environments as well as general maintenance.

Key benefits of this bit are its material strength and compatibility. The S2 tool steel and heat treatment deliver the hardness and edge life required for repeated use, while the black phosphate finish helps resist corrosion in workshop and on-site conditions. The 1/4" hex shank ensures compatibility with a wide range of manual and powered drivers, and the T15 profile provides reliable engagement with Torx fasteners to limit rounding and slippage.

Duchy Fasteners stocks a comprehensive range of Torx bits and hex shank accessories in various sizes and lengths; this T15 25mm bit is available singly and in multi-packs to suit trade, workshop and industrial requirements.