The JBO Thread Plug Gauge (NoGo) is a metric fine, right-hand NoGo plug gauge designed to verify internal threads in precision holes. Built for engineers, machinists, inspectors, and workshop professionals, it delivers fast, repeatable checks for M58 x 3 threaded holes to ensure they meet spec without guesswork.

Manufactured from hardened steel, the gauge resists wear in busy environments and maintains dimensional integrity for long service life. The knurled body provides a secure grip, even with gloves on, enabling quick insertions and withdrawals during routine inspections.

• Metric fine NoGo gauge for M58 x 3: precisely checks the NoGo limit on metric fine threads, helping you confirm holes meet the required seating and interference criteria.
• Hardened steel with knurled grip: durable construction that withstands daily use in demanding workshops while offering a comfortable, secure grip for accurate inspections.
• Right-hand orientation with 6H tolerance: designed to align with standard metric threads, delivering reliable, repeatable measurements and reducing operator variation.

Using this gauge gives you a clear, objective check of hole size and thread condition, speeding up setup, inspection, and quality control. It helps prevent undersized or oversized holes from moving forward in production, supports consistent results across components, and reduces downtime by providing immediate, trustworthy feedback.