JBO Thread Plug Gauge - UNJF Go-No/Go - Left Hand - 3B - 1/4 x 28 Die & Mould Collet Chucks W-coated carbide for extended tool

W-coated carbide for extended tool life: The robust coating enhances wear resistance and heat tolerance

DIN 8051 B tolerance / ISO H5: Tight dimensional control ensures precise hole sizing and repeatable results across production runs

long-reach solution that maintains accuracy in complex mold and die geometries

005 mm): Secure fit in standard chucks and collets

while the HSS (M2) material offers the wear resistance needed for repeated use

JBO Thread Plug Gauge - UNJF Go-No/Go - Left Hand - 3B - 1/4 x 28 Die & Mould Collet Chucks W-coated carbide for extended toolThe JBO Thread Plug Gauge UNJF Go No Go Left Hand 3B 1 4 x 28 is a precision inspection tool engineered to verify left hand UNJF threaded holes and components. Sized for 1 4 28 threads with a 3B tolerance, it helps quality teams, machinists, and inspectors quickly confirm whether a hole will accept the mating thread without guesswork. Go No Go design for fast acceptance testing: enables immediate pass fail decisions on threaded holes, speeding up