HiKoki / Hitachi Spring (B) HIT884534 – Fits WF 4H2 High‑Pressure Automatic Screwdriver & NR3665DA Cordless Nailer

HiKoki / Hitachi Spring (B) HIT884534 – Fits WF 4H2 High‑Pressure Automatic Screwdriver & NR3665DA Cordless Nailer

Genuine replacement Spring (B), part number HIT884534, by HiKoki / Hitachi. This precision‑manufactured spring is built to the original equipment specification, providing the correct tension and return force required for reliable operation in specific fastening tools. It ensures smooth trigger action, consistent firing, and helps to reduce wear caused by improper spring fatigue or failure.

Ideal for replacing worn or weakened springs that lead to misfires, dragging, or sluggish returning action. Made from durable material to endure repeated cycles and maintain performance over the long haul.