Thread Plug Gauge M 3x0,5 6H Go/Nogo

Precision-manufactured thread plug gauges for inspecting internal metric threads in accordance with ISO 1502 and applicable ISO standards for metric thread types. Metric threads are defined by the international ISO thread system, where “M” indicates the nominal (major) diameter. The pitch corresponds to either coarse or fine thread, depending on the application. 

The GO gauge must enter smoothly and evenly without excessive force. The NOGO gauge must not engage more than two full turns – otherwise, the allowed tolerance is exceeded.

This series is supplied as a combined GO/NOGO plug up to size M36. For sizes above M36, please refer to our G1020** series**.
All measurements must be carried out at a reference temperature of 20°C. 

• Thread type: Metric (ISO M)
• Standard: ISO 1502
• Made of hardened tool steel
• Supplied as GO/NOGO or combined plug
• Clearly engraved with size and tolerance class
• Certification available upon request