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DIN 8093 / ISO H4 tolerance with straight shank: ensures precise fit and predictable performance in standard tooling configurations
Ideal for enlarging existing holes or achieving a specified bore in a variety of metals and alloys
while the left-handed spiral flute provides effective swarf management for a steady
It’s designed for finishing drilled holes to ISO H4 tolerance
10 mm size is built for repeatable precision in demanding applications
JBO Thread Plug Gauge - UNC Go-No/Go - Left Hand - 2B - 1 3/8 x 6 Face Mill Arbors - Anti-Vibration DIN 8093 / ISO H4The JBO Thread Plug Gauge is a precision tool designed for testing internal UNC left hand threads in holes and threaded fittings. Built for manufacturers, automotive shops, aerospace facilities, and serious hobbyists, it provides fast, on the spot verification of thread conformity using a clear Go No Go result. Sized for 1 3 8 in. x 6 in. UNC left hand threads with 2B tolerance, this gauge helps ensure proper fit and reliable assembly. Go No Go
