The JBO Thread Plug Gauge (GO) – Metric Fine, Left Hand, 6H with M85 x 1.5 sizing is a precision inspection tool designed to verify threaded holes meet exact standards. Built for machinists, inspectors, and quality teams across manufacturing, automotive, and aerospace sectors, this GO gauge helps confirm that a hole accepts a properly formed left-hand thread to specification. Crafted for reliable performance in busy shops, it supports efficient quality control and accurate component verification.

Constructed from hardened steel, the JBO plug gauge offers exceptional durability and wear resistance, so it maintains its accuracy even after repeated use in demanding work environments. The tool’s metric fine sizing ensures precise go checks for the M85 x 1.5 thread, with a 6H tolerance that aligns with common industry standards. Its straightforward design makes it easy to identify when a hole meets the required thread engagement, supporting consistent inspection results.

• Precise metric fine, left-hand M85 x 1.5 GO gauge: Engineered for accurate Go checks on left-hand threads with 6H tolerance, ensuring holes meet the exact threaded size and engagement specified.
• Hardened steel construction: Delivers long-lasting wear resistance and maintains measurement integrity through heavy use in busy inspection, machining, and assembly environments.
• Fast, reliable inspection workflow: Simple, intuitive design supports quick insertions for rapid quality checks, helping reduce downtime and improve throughput on the shop floor.

Using this GO plug gauge helps you streamline quality control, reduce rework, and ensure parts consistently meet dimensional requirements. Its durable construction and precise metric sizing support dependable results across demanding applications, giving engineers and buyers confidence in every threaded-hole measurement and every completed part.