This product is a 150 mm x 5 mm parallel pin punch, a hand tool designed to drive out and install straight pins, dowels, roll pins and cotter pins by applying controlled hammer blows to the pin end. Its primary use is to transfer force directly to a pin without widening the hole or damaging surrounding material, making it ideal for pin removal, assembly alignment and precision mechanical maintenance.

The punch is drop‑forged from chrome‑vanadium (Cr‑V) tool steel and is heat‑treated and tempered to a working hardness of approximately 48–54 HRC, giving good toughness while retaining a hard striking face. The shank is ground to a true 5.00 mm diameter along the parallel working length and the overall length is 150 mm, providing reach and leverage in confined spaces. The tip is machined square and centre‑ground for accurate engagement with pin ends. A black‑oxide / phosphate finish gives basic corrosion resistance and reduces surface glare; the underlying steel conforms to recognised tool steel specifications such as ISO 4957 and relevant BS/EN material standards for hand tools.

Typical applications include automotive repair, engineering workshops, plant maintenance, agricultural machinery servicing and metal fabrication. The tool is commonly used by engineers, mechanics and maintenance technicians to remove shear pins, dismantle assemblies and align components during reassembly. It is intended for use with a soft or ball‑peen hammer and is not suitable for striking hardened pins or using as a drift for heavy off‑centre loads.

Key benefits of this punch include a heat‑treated tool‑steel construction for strength and wear resistance, a precision ground tip for accurate engagement with 5 mm pins, and a protective finish to slow corrosion in workshop environments. Its 150 mm length balances reach with control, making it compatible with standard pin sizes and most hand‑tool workflows. Duchy Fasteners stocks a wide range of pin punches and related chisels: sizes typically run from 2 mm to 10 mm diameter and lengths from 75 mm to 200 mm, available individually or in multi‑piece sets to suit workshop and site requirements. Product code DR51695 (Draper Tools Group D) is held in stock; please contact Duchy Fasteners for current availability and pack options.