Professional ISO 6H-certified metric thread plug gauges (M1 to M130) for rapid verification of internal thread tolerance compliance. The integrated Go/NoGo design streamlines quality checks in CNC machining, automotive assembly, and industrial fastener production. Hardened steel construction resists wear for repeatable accuracy across high-volume manufacturing.

Critical for:

• Validating thread pitch, diameter, and alignment in nuts, couplings, and hydraulic ports
• Preventing cross-threading and assembly defects in precision equipment
• Ensuring seamless ISO metric standard compliance

Key Features: ️ Dual Go/NoGo functionality ️ Full M1-M165 size range ️ ISO 6H-calibrated tolerance ️ Industrial-grade hardened steel ️ Pre-machined alignment grooves for stable insertion