The Vermont Gage 301540050 Go/No-Go Taperlock Assembly is a precision internal-thread GO/NO-GO gage used to verify M26.0 × 1.0 Class 6H ISO metric threads. The GO member has a 25.350 mm pitch diameter and the NO-GO member 25.520 mm, with this hardened tool steel taperlock assembly built for durable, repeatable functional verification in production inspection and metrology. Widely used in machine shops, precision manufacturing facilities, calibration laboratories, aerospace production, automotive machining, and other industrial quality-control environments to confirm thread size and fit according to ISO standards.
