The Asimeto Ring Thread Gauge (NoGo) is the precision metric tool machinists and quality teams rely on to verify M21 x 1 right-hand threads within the 6g tolerance class. With its NoGo designation, it quickly reveals when a fastener’s pitch diameter is out of spec, helping ensure only correctly sized threads are used.

• Series: 686 Series, engineered for high accuracy and durable performance in professional settings.
• Thread Size: Metric M21 x 1, right-hand thread, tailored for precise diameter verification.
• Tolerance Class: 6g designation with NoGo testing to identify oversized or out-of-tolerance threads.
• Construction: Precision-machined from high-quality material for long-lasting reliability in demanding environments.
• Handling Features: Knurled outer edge provides secure grip during measurements, even with work gloves; red reference marker aids orientation.

Designed for technicians, engineers, and quality control professionals, this NoGo gauge streamlines acceptance testing on fasteners and threaded components. Use it to confirm that the pitch diameter does not exceed the maximum limit, reducing assembly errors and ensuring safe, reliable connections in machinery, automotive, and industrial applications. The 686 Series construction and dedicated 6g metric standard offer a dependable, repeatable check that integrates smoothly into standard inspection routines.