JBO Thread Ring Gauge (GO) - UNF - Right Hand - 3A - No. 4 x 48 FHH Built with a long 4

Built with a long 4 mm shank

repeatable performance: tighter tolerances

Go/No-Go Validation at a Glance: Quickly confirm hole acceptance by checking that the go limit fits while the no-go limit does not

NoGo Metric Fine Thread Gauge: Enables rapid identification of out-of-spec external threads with clear pass/fail results

The tapered neck boosts tool rigidity and stability

JBO Thread Ring Gauge (GO) - UNF - Right Hand - 3A - No. 4 x 48 FHH Built with a long 4The JBO Thread Ring Gauge (GO) UNF Right Hand 3A No. 4 x 48 is a precision measurement tool designed to verify external thread diameters quickly and reliably. Its ideal for engineers, buyers, tradespeople, hobbyists, and quality teams who need to confirm threaded components meet exact standards before assembly or procurement. Clear Go No Go verification: Enables fast acceptance checks so you can identify properly conforming components at a glance,