Carmex Thread Mills Solid Carbide - Fast Type - For Hard Materials - UN (UNC UNF UNEF UNS) - No. 4 x 40 - MT3 Threadmill25 75 holes for 6H tolerance

75 holes for 6H tolerance with a Go/No-Go design

If you’re assembling or repairing parts that rely on precise M4x0

delivering clear pass/fail feedback and speeding up quality checks

this gauge ensures reliable engagement and sealing for fuel and fluid systems

with DIN 8093 compliance and ISO H4 tolerance

Carmex Thread Mills Solid Carbide - Fast Type - For Hard Materials - UN (UNC UNF UNEF UNS) - No. 4 x 40 - MT3 Threadmill25 75 holes for 6H toleranceCarmex FSH solid carbide thread mills are engineered for hard materials and precision UNC UNF UNEF UNS thread production. This No. 4 x 40 tool with an MT3 shank delivers dependable performance in demanding applications, from aerospace components to precision dies. Thread format and size: Designed for UNC, UNF, UNEF, and UNS threads; No. 4 x 40 size for reliable fit and finish. MT3 shank: Compatible with standard MT3 collets for secure, repeatable