A part is within tolerance if it’s easy to thread the go gauge into the part but difficult to thread the no-go gauge more than two turns. Go gauges check the minimum internal thread size. No-go gauges check the maximum internal thread size. Thread fit designates the tightness or looseness of mating threads. 2G is standard for Acme threads.

Identify Acme threads and use as a guide while grinding and cutting Acme threads to a 29° included angle. Pipe Thread and Thread Pitch Identifiers In addition to checking NPT and BSPT pipe sizes, use the two included gauges for measuring thread pitch.

Acme Class 2G. Metric Class 6g. Metric ... Confirm your fastener's thread size, pitch, or threads per inch ...

Identify Acme threads and use as a guide while grinding and cutting Acme threads to a 29° included angle. Pipe Thread and Thread Pitch Identifiers In addition to checking NPT and BSPT pipe sizes, use the two included gauges for measuring thread pitch.

Choose from our selection of metric thread gauges in a wide range of styles and sizes. Same and Next Day Delivery.

Choose from our selection of threads per inch and center identifiers, center finders for curved surfaces, Acme thread identifiers, and more. Same and Next Day Delivery.

To speed up tests, these gauges have a go gauge on one end and a no-go gauge on the other. Acme Threaded Plug Gauges with Handle Determine if lead nuts, screw collars, and other parts with internal Acme threads are within tolerance.

To speed up tests, these gauges have a go gauge on one end and a no-go gauge on the other. Acme Threaded Plug Gauges with Handle Determine if lead nuts, screw collars, and other parts with internal Acme threads are within tolerance.

Determine threads per inch and thread pitch on nuts, bolts, and other fasteners. Identifiers in a variety of sizes are riveted together in a fan design— pull one out and hold it against your threads to see if it fits.

To speed up tests, these gauges have a go gauge on one end and a no-go gauge on the other. Acme Threaded Plug Gauges with Handle Determine if lead nuts, screw collars, and other parts with internal Acme threads are within tolerance.