JBO Thread Plug Gauge - UNC Go-No/Go - Left Hand - 2B - 9/16 x 12 ER Collet Chucks Versatile sizing and ER collet

Versatile sizing and ER collet compatibility: Available in multiple sizes and tapers to fit different machine spindles and tool shanks

and fewer tool changes during deep milling projects

2 mm radius) for precise fillets and sharp corners

it delivers stable cutting and efficient chip evacuation across a range of features—from fine pockets to larger slots

5 Micron Run-Out: Minimizes run-out at the tool tip to improve cut quality

JBO Thread Plug Gauge - UNC Go-No/Go - Left Hand - 2B - 9/16 x 12 ER Collet Chucks Versatile sizing and ER colletJBO Thread Plug Gauge UNC Go No Go Left Hand 2B 9 16 x 12 is a precision gauge used to verify internal threads to Unified standards in manufacturing, automotive, and aerospace environments. Its go no go design delivers fast pass fail feedback for right fit, reliable assemblies. Go No Go Quick Conformity Check: The dual ended design lets you quickly confirm thread hole acceptanceif the go end threads in smoothly and the no go end does not, the hole is