Simonds 73517500 Three Square File 6in Smooth Double-Cut tool storage

Triangular Machinist File for Metalwork

The Simonds 73517500 is a 6‑inch American‑pattern machinist file with a triangular profile and three cutting edges. Its double‑cut faces and single‑cut edges suit shaping and finishing aluminium, brass, bronze, steel and tin. The rigid, tapered body and natural finish give controlled material removal in tight corners.

Smooth Cut Limits on Hard Materials

The smooth‑cut specification with 52 to 66 teeth per inch is intended for fine finishing rather than rapid stock removal. On hardened steels the file will load quickly and lose bite, so aggressive shaping tasks need a coarser tool. The exclusive wavy‑tooth design reduces chatter but does not extend the file into heavy‑duty cutting roles.

Six‑Inch Length and Edge Count Define Reach

At 16 inches overall the file offers enough reach for bench‑scale work while the 7/16‑inch thickness fits narrow slots and internal angles. Three cutting edges cover the triangular faces, yet the single‑cut edges limit width‑wise smoothing on broad flat surfaces. The box container protects the teeth during storage but adds no capacity for larger workpieces.