The JBO Thread Plug Gauge is a precision UNC go/no-go tool designed to quickly verify internal threads for right-hand holes. It’s ideal for machinists, quality inspectors, maintenance technicians, and assembly professionals who need reliable thread inspection without guesswork.

Sized for No. 6 x 32 UNC threads with a Class 3B tolerance, this gauge provides clear pass/fail results so you can confirm proper fitment and mating with standard fasteners every time. The rugged, knurled body stands up to daily shop use and makes handling easy, even with gloves on.

• Go/No-Go verification for fast, unambiguous checks: Quickly determine whether the internal threads meet the specified UNC standard, reducing inspection time and rework.
• Specifically sized for UNC No. 6 x 32, Class 3B: Ensures compatibility with standard fasteners and consistent results across parts that require precise thread engagement.
• Rugged, knurled handle for secure handling: Durable construction and a textured grip provide comfortable, confident use in busy environments, with or without gloves.

With the JBO Thread Plug Gauge, your quality checks become faster and more reliable. Quick go/no-go feedback helps you route out-of-tolerance parts at the point of inspection, reducing downtime and preventing mismatches in assemblies. Its precise UNC 6-32, 3B specification aligns with industry standards, giving you confidence that parts will thread in smoothly and perform as intended in aerospace, automotive, or manufacturing applications. Built to endure daily use, this gauge supports consistent results across shifts and operators, making it a dependable addition to any metrology toolbox.