About This

• Complete 66-Piece Set: Our comprehensive Thread Checker Set includes 35 standard sizes and 31 metric sizes, making it the ultimate nut and bolt thread checker for both professionals and DIY enthusiasts. Quickly and effortlessly identify screw sizes with this essential tool.
• Unique Size Configuration: This one-of-a-kind 66-piece set includes rare thread sizes that are often hard to find elsewhere. Enhance your toolkit with our bolt and nut gauge thread checker, providing indispensable gauges for any DIY hobbyist or technical professional.
• Durable High-Quality Material: Crafted from premium aluminum, our thread gauges are built to last. Each gauge features clear and long-lasting laser-etched markings, ensuring easy readability and reliable measurements every time you check bolt or nut sizes.
• Three Convenient Reading Methods: The bolt and nut checker offers three clear methods for accurately reading sizes—through engraved markings on the gauges, easy-to-read stickers on the foam storage, and color coding (blue for standard sizes, red for metric). This ensures that you have multiple options at your fingertips for effortless measurements.
• User-Friendly Organization: Designed for easy access and storage, our thread checker set comes in a sleek black box with a foam storage rack. Say goodbye to inconvenient trips to the hardware store when finding the right size is just a fingertip away!
• 35 Inch Blue Size: 2-56 UNC, 2-64 UNC, 3-48 UNC, 3-56 UNC, 4-40 UNC, 4-48 UNC, 5-40 UNC, 6-32 UNC, 6-40 UNC, 8-32 UNC, 8-36 UNC, 10-24 UNC, 10-32 UNF, 12-24 UNC, 12-28 UNC, 1/4-20 UNC, 1/4-28 UNF, 5/16-18 UNC, 5/16-24 UNF, 3/8-16 UNC, 3/8-24 UNF, 7/16-14 UNC, 7/16-20 UNF, 1/2-13 UNC, 1/2-20 UNF, 9/16-12 UNC, 9/16-18 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 UNC
• 31 Metric Red Size: M2X0.4 Coarse, M2.5X0.45 Coarse, M3x0.5 Coarse, M3X0.6 Coarse, M4x0.7 Coarse, M5x0.8 Coarse, M6x1.0 Coarse, M7x1.0 Coarse, M8x1.0 Fine, M8x1.25 Coarse, M9X1.25 Coarse, M10x1.0 Fine, M10x1.25 Fine, M10x1.5 Coarse, M11x1.0 Fine, M11x1.25 Fine, M11x1.5 Coarse, M12x1.0 Fine, M12x1.25 Fine, M12x1.5 Fine, M12x1.75 Coarse, M14x1.5 Fine, M14x2.0 Coarse, M16x1.5 Fine, M16x2.0 Coarse, M18x1.5 Fine, M18x2.5 Coarse, M20-1.5 Fine, M20-2.5 Coarse, M24-2.0 Fine, M24-3.0 Coarse.