This is a Pound‑Through Pozidriv screwdriver with a 75 mm shaft length, intended for driving Pozidriv (PZ) screws where occasional hammer‑assisted impact is required. The “pound‑through” design means the steel shaft runs through the handle to a striking cap so the tool can be struck with a hammer without splitting the handle, making it suitable for loosening seized fasteners and for tradespeople who need an impact‑capable hand driver.

The blade is manufactured from S2 tool steel with a chrome plate finish on the shaft for corrosion resistance and a black‑phosphate or tip‑hardened Pozidriv head to improve grip and reduce cam‑out. The tip is machined to the Pozidriv profile (PZ) and heat‑treated to a typical tip hardness of approximately HRC 56–60 to resist mushrooming. The handle is an impact‑resistant polypropylene with a steel striking cap. The tool is produced to recognised screwdriver and hand‑tool specifications (manufactured to ISO screwdriver profile standards such as ISO 8764 where applicable and to relevant BS/EN tolerances for hand tools).

Typical applications include electrical installation, plumbing and heating, carpentry and joinery, maintenance and repair, and light mechanical assembly where Pozidriv fasteners are used. It is often used on site in construction, building services, HVAC installation and general facilities maintenance because the pound‑through shaft allows controlled hammer impact for stubborn or partially seized screws while retaining comfortable hand operation for routine driving.

Key benefits are the impact‑capable pound‑through construction for added versatility, the hardened Pozidriv tip for long life and consistent fit with PZ screws, and the chrome plating/black‑phosphate treatment that improves corrosion resistance. The S2 steel shaft provides toughness and resistance to bending under torque, while the handle and striking cap combination ensure safe, repeatable hammering when required. The driver is compatible with standard Pozidriv screw sizes and reduces cam‑out compared with a slotted driver.

Duchy Fasteners stocks Pozidriv pound‑through screwdrivers in a range of shaft lengths and tip sizes; this item is the 75 mm shaft version supplied singly, and larger sizes and multipack options are available from our Cornwall warehouse.