ThreadTest - Alloy Thread Tester Plate

Handy plate for identifying common threads - Metric 6, 8, 10mm; UNF 1/4", 5/16" and 3/8"; BSF 3/16", 1/4", 5/16", 3/8"; BSP 1/8", 1/4", Whitworth 1/4", 5/16", 1/2"; NPT 1/8", 1/4" and 3/8"