INSIZE 7394-70A 3-Wire Set 0.725 mm

The INSIZE 7394-70A is a matched set of three measuring wires for checking the pitch diameter of a screw thread by the three-wire method. Each wire measures Ø0.725 mm, for a thread pitch of 1.25 mm. INSIZE makes it from carbide hardened to HRA90, holds diameter accuracy to ±0.5 micron and cylindricity to 0.5 micron, and supplies the set with a manufacturer inspection certificate. Seating three matched wires in the thread flanks like this lets an ordinary micrometer give the pitch diameter directly, without a dedicated thread micrometer.