JBO Thread Plug Gauge - UNC Go-No/Go - Left Hand - 2B - 3/8 x 16 Milling Cutter Arbors built from M2 high-speed steel

built from M2 high-speed steel for durability and long tool life

which translates to better part finishes and reduced secondary processing

The M2 HSS composition offers durable wear resistance

this reamer integrates smoothly into standard metalworking workflows

and light finishing work in prototyping

JBO Thread Plug Gauge - UNC Go-No/Go - Left Hand - 2B - 3/8 x 16 Milling Cutter Arbors built from M2 high-speed steelThe JBO Thread Plug Gauge is a precision inspection tool designed for verifying UNC left hand thread holes. Use it to quickly check 3 8 x 16 threaded holes in manufacturing, automotive, and aerospace applications, ensuring parts meet documented thread standards. Its go no go design provides immediate feedback, helping technicians confirm proper fitment and reduce rework on the shop floor. Go No Go quick check for UNC left hand threads: Two ends enable