All Categories
Screw Sizes (smooth bore holes) - #0, 1, 2, 3, 4, 6, 8, 10, 12, and #14
UNC Threads - 6-32, 8-32, 10-24, 1/4-20, 5/16-18, 3/8-16, 7/16-14, and 1/2-13
UNF Threads - 10-32, 1/4-28, 5/16-24, 3/8-24, 7/16-20, and 1/2-20
Metric Threads (Standard, Fine, and Extra Fine) - M4x0.7, M5x0.8, M6x1.0, M7x1.0, M8x1.0, M8x1.25, M10x1.0, M10x1.25, M10x1.5, M12x1.25, M12x1.5, and M12x1.75
Fractions - 0 to 6" graduated in 1/16'ths of an inch. Metric - 0 to 15 Centimeters graduated in millimeters
Test, don't guess! The Hillman Vertical Nut and Bolt Gauge takes a wide range of commonly used nut, bolt, washer and screw sizes and puts them into one compact, easy-to-use tool so you can know with certainty the dimensions of the fastener in your hand. It's a time and money saver that will help you cut down on seemingly endless sorting and fumbling to get the right size. The gauge is set up to check fasteners in UNC and UNF threads, metric thread and screw sizes. It also includes a 6-inch fractional scale and a 6-inch metric scale.