JBO Thread Plug Gauge - UNF Go-No/Go - Left Hand - 2B - 1 1/8 x 12 G it maintains stability during deep

it maintains stability during deep groove operations and is available in various specifications to fit different machining needs

Carbide-tipped for longer life: The K10 carbide tip resists wear

this end mill distributes cutting edges to reduce cutting forces and promote smooth chip evacuation

12 mm hand reamer features M2 high-speed steel

while the 5/8" arbor compatibility ensures smooth integration with common milling machines and adapters

JBO Thread Plug Gauge - UNF Go-No/Go - Left Hand - 2B - 1 1/8 x 12 G it maintains stability during deepThe JBO Thread Plug Gauge is a precision Go No Go gauge built to verify UNF threaded holes quickly and reliably. It's ideal for production lines, repair shops, and quality teams in manufacturing, automotive, and aerospace environments where correct thread engagement matters for fit and function. With its left hand UNF configuration, 1 1 8 x 12 size, and 2B tolerance, this gauge provides clear pass fail indication you can trust during routine