Vermont Gage 301111040 #4-48 UNF-2B Go/No-Go Thread Plug Gage

This is a new Vermont Gage part number 301111040, a double-ended Go/No-Go thread plug gage assembly (TPLK ASSY) for inspecting #4-48 UNF internal threads to Class 2B tolerance per ASME B1.2 standards. The Go member measures 0.0985 in and the No-Go member measures 0.1016 in, both clearly engraved on the hardened steel handle along with the thread designation. The gage features a dark oxide finish on the handle with precision-ground threaded members and includes a Certificate of Accuracy, confirming calibration traceable to NIST standards at time of manufacture. Vermont Gage manufactures this tool in Swanton, VT, USA and it is used in production inspection of tapped holes in aerospace, electronics, defense, and precision mechanical assembly where #4-48 UNF fasteners are specified.

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