The JBO Thread Plug Gauge is a precision go/no-go tool designed to verify BSW right-hand threaded holes at 1 3/8 x 6 with Medium class tolerance. Its two-ended design delivers quick, reliable go/no-go checks, making it ideal for production floors, quality control departments, automotive, aerospace, and maintenance operations that rely on fast, repeatable thread verification.

• Go/No-Go Quick Validation: Instantly confirms whether a hole meets the required thread size and depth, delivering a clear pass or fail to speed up inspections and reduce rework.
• BSW Right-Hand Threads, 1 3/8 x 6, Medium Class: Precisely sized ends align with standard British Standard Whitworth right-hand threads, ensuring accurate checks against the correct tolerance class.
• Rugged, Ergonomic Construction: Knurled grip and durable metal ends provide secure handling in busy workshops and long service life in daily gauging tasks.

Whether you're assembling machinery, testing components, or performing routine maintenance, this gauge helps you make confident, data-backed decisions quickly—keeping parts moving, improving quality, and reducing downtime.