This 55-piece thread gauge kit includes 30 standard sizes and 25 metric sizes, allowing for quick and easy identification of screw sizes. Perfect for both professionals and DIY enthusiasts, this kit makes threading inspections seamless.

Constructed from premium aluminum, our thread gauges are designed for durability and longevity. The clear and lasting laser-etched markings on each gauge ensure they remain easy to read, providing reliable measurements every time you check bolt or nut sizes.

Stand out with our unique M11x1.25 and M11x1.5 metric thread gauges, specifically designed for automotive mechanics. These specialized sizes are essential for main cylinder components, making this kit a must-have tool for professionals and DIY enthusiasts alike.

The user-friendly design of the screw size gauge features a smooth black box with a foam storage rack, making it simple to access and store. ay goodbye to the inconvenience of trips to the hardware store when you can easily find the right size at your fingertips.

This bolt and nut identifier gauge offers three distinct ways to read sizes clearly—through engraved markings on the gauges, easy-to-read stickers on the foam storage, and color coding (blue for standard sizes and red for metric), ensuring you have multiple options at hand.

2-56 UNC, 4-40 UNC, 6-32 UNC, 6-40 UNC, 8-32 UNC, 10-24 UNC, 10-32UNF, 12-24 UNC, 1/4-20 UNC, 1/4-28UNF, 5/16-18 UNC, 5/16-24 UNF, 3/8-16 UNC, 3/8-24 UNF, 7/16-14 UNC, 7/16-20 UNF, 7/16-24 UNF, 1/2-13 UNC, 1/2-20 UNF, 9/16-12 UNC, 9/16-18 UNF, 9/16-20 UNF, 5/8-11 UNC, 5/8-18 UNF, 3/4-10 UNC, 3/4-16 UNF, 7/8-9 UNC, 7/8-14 UNF, 1-8 UNC, 1-12 UNF.

M2X0.4 Coarse, M2.5X0.45 Coarse, M3x0.5 Coarse, M4x0.7 Coarse, M5x0.8 Coarse, M6x1.0 Coarse, M7x1.0 Coarse, M8x1.0 Fine, M8x1.25 Coarse, M10x1.0 Fine, M10x1.25 Fine, M10x1.5 Coarse, M11x1.25 Fine, M11x1.5 Coarse, M12x1.25 Fine, M12x1.5 Fine, M12x1.75 Coarse, M14x1.5 Fine, M14x2.0 Coarse, M16x1.5 Fine, M16x2.0 Coarse, M20-1.5 Fine, M20-2.5 Coarse, M24-2.0 Fine, M24-3.0 Coarse.