The T7 Torx Star 1/4" hex bit, 25 mm long, is a precision driver bit designed to engage Torx (star) fasteners with a T7 profile. Its primary use is for driving small Torx screws in confined spaces where a 1/4" (6.35 mm) hex quick‑release holder or 1/4" bit chuck is used, offering consistent engagement and repeatable torque transfer for repair, assembly and maintenance tasks.

This bit is manufactured from S2 tool steel with a protective black oxide/phosphate finish to give improved corrosion resistance and controlled wear characteristics in regular use. The shank is a standard 1/4" hex (6.35 mm) to suit common bit holders, sockets and cordless screwdrivers. The 25 mm overall length gives a short, rigid reach ideal for electronics and precision work. The Torx T7 head is a star profile drive type, intended for low‑torque applications where cam‑out must be avoided. Manufacture conforms to recognised industry dimensional tolerances, with the 1/4" hex shank compatible with DIN 3126 / ISO 1173 interfaces and produced to BS/DIN/ISO interchangeability expectations for hand and power tool accessories.

Typical applications include electronic equipment assembly, circuit board removal, consumer electronics repair (laptops, phones and hard drives), instrumentation and other precision mechanical assemblies that use small Torx fasteners. The bit is equally suitable for use in bench top drivers, manual bit holders and compact cordless drivers where accurate bit seating and low wobble are required.

Key benefits of this T7 25 mm bit are its material strength from S2 tool steel, the anti‑corrosion black finish that prolongs service life, and the 1/4" hex compatibility that makes it interchangeable with the majority of quick‑release chucks and multi‑bit screwdrivers. The T7 profile reduces the risk of cam‑out compared with Phillips, making it appropriate where screw head integrity is important.

Duchy Fasteners stocks this T7 1/4" hex bit individually and in assorted Torx sets; our range covers common Torx sizes and lengths (including 25 mm and 50 mm options) supplied in single items and multi‑packs for trade and industrial use.