About This

• 【Wide Range of Sizes】Seesii thread checker is an essential tool for quickly and accurately identifying 34 different sizes of nuts and bolts, covering a wide range of industrial and DIY applications. It includes 15 metric threads, 19 standard threads, and 8 drill tap sizes, ensuring compatibility with the most commonly used fasteners. The thread checker board includes metric sizes from 4mm x 0.7 to 16mm x 2.0, and standard sizes from 6-32 to 3/4-16 Fine.
• 【Dual-Scale Tool】Designed for versatility, the nut and bolt thread checker features both centimeter and inch markings, allowing users to measure fastener lengths with ease, regardless of their preferred unit of measurement. Clearly marked scales provide easy reading, perfect for hobbyists and home users who need accurate measurements for various projects.
• 【High-Precision】Engineered for accuracy, the screw size chart is machined with high precision to ensure every internal and external thread meets Go & No Go Class 2B ANSI standard specifications to help you take the guesswork out of screw and bolt identification. This ensures reliable thread matching, reducing the risk of incorrect fastener selection and improving efficiency in mechanical and construction tasks.
• 【Anti-Slip Design】The bolt size finder is equipped with four non-slip rubber feet, keeping it firmly in place on workbenches or tables during use. This prevents accidental movement, allowing for steady, hands-free operation when checking threads or measuring components.
• 【Easy To Use】Our nut and bolt thread identifier gauge board is designed for effortless usability, with laser-etched markings on the surface. The font size typically ranges from 3mm to 5mm for optimal visibility and precision, allowing you to quickly identify and match nuts and bolts with precision. Its dual-mount design offers flexibility — you can lay it flat on a workbench for stable measurement or hang it on a wall for space-saving accessibility. Whether you're working on machinery, automotive repairs, or home projects, the clearly marked thread gauges enable instant verification, eliminating guesswork and saving time.
• 【Sturdy & Durable】Our Seesii screw size chart is made from strong aluminum with a smooth black finish. The stainless steel threads and clean-cut holes make checking nuts, bolts and washers quick and easy - no snags, just smooth sliding. This tough bolt and nut sizer keeps working year after year, making it a handy helper for any toolbox.