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Standard Thread Sizes: 2-56 Coarse, 4-40 Coarse, 6-32 Coarse, 8-32 Coarse, 3/16-24 Fine, 10-24 Coarse, 10-32 Fine, 12-24 Coarse, 1/4-20 Coarse, 1/4-28 Fine, 5/16-18 Coarse, 5/16-24 Fine, 3/8-16 Coarse, 3/8-24 Fine, 7/16-14 Coarse, 7/16-20 Fine, 1/2-13 Coarse, 1/2-20 Fine, 9/16-12 Coarse, 9/16-18 Fine, 5/8-11 Coarse, 5/8-18 Fine, 3/4-10 Coarse, 3/4-16 Fine, 1-8 Coarse, 1-12 Fine
18 Sizes Drill Bit Gauges: 3, 4, 5 6, 7, 8, 10, 12, 14, 1/8, 3/16, 1/4, 13/64, 7/32, 5/16, 3/8, 7/16, 1/2
Professional-grade SAE/Metric Thread Identifier: This bolt and nut identification gauge is made from CNC-machined anodized aluminum alloy and high-quality US304 stainless steel bolts. It can withstand heavy use and ensures consistent strength and precision.