JBO Thread Plug Gauge (GO) - UNC - Right Hand - 2B - 1 3/4 x 5 FMH FLH FHH S&E A&NF M&D intermediate precision HSS tool designed

intermediate precision HSS tool designed for finishing holes with tight tolerances

consistently

45° Helix Optimized for Aluminium & Non‑Ferrous: The 45‑degree helix angle promotes effective chip formation and swarf evacuation in soft metals

ISO H5 tolerance for repeatable hole sizes: The reamer is ground to ISO H5 (-0 +0

Go/No-Go Quick-Check: Immediately confirm whether a hole meets the required tolerance with a simple pass/fail read

JBO Thread Plug Gauge (GO) - UNC - Right Hand - 2B - 1 3/4 x 5 FMH FLH FHH S&E A&NF M&D intermediate precision HSS tool designedThe JBO Thread Plug Gauge (GO) is a precision inspection tool designed to quickly verify UNC right hand threaded holes and mating parts. Its ideal for manufacturing, automotive, and aerospace quality control, providing fast, reliable go no go checks to confirm thread conformity. Sized for practical shop use, this GO plug gauge measures 1 3 4 inches in diameter with a 5 inch overall length and is engineered to the Unified Thread Standard (UNC) with a