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    Detachable Magnetic Nut and Bolt Thread Checker, 30 Bolt and Nut Sizer

    • Premium Quality Bolt Gauge Plate Precision-machined from high-grade 6061 aluminum with permanent laser markings for long-lasting clarity. Features 8 dowel pin gauge holes for versatile sizing and the non-slip rubber base ensures perfect stability during one-handed operation, making this bolt size finder ideal for workshops and job sites.
    • Romovable Magnetic Plates - This specialized magnetic thread size checker features an innovative modular magnetic design, with detachable left and right measurement plates that can be used independently, significantly enhancing operational flexibility.
    • Precision Thread Checker - Our professional bolt size and thread gauge is CNC-machined to exacting Class 2B ANSI Standard specifications, guaranteeing perfect "Go/No-Go" verification for both internal (nut) and external (bolt) threads. The precision-ground bolt identifier deliver laboratory-grade accuracy in your workshop, eliminating mismatched hardware and installation errors.
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    Any questions? Our AI mode will help you find out quickly.

    Instantly Check Your Bolt Length: Our screw gauge does more than just identify thread gauges - its dual-side precision scales let you instantly measure bolt lengths with ruler-like accuracy! No more fumbling with separate measuring tools.
    30 Nut and Bolt Thread SizesOur thread guage instantly identifies 15 common metric sizes and 15 imperial sizes with precision-engineered male/female test ports - perfect for verifying nuts, bolts, screws and washers in seconds. The ultimate workshop essential for mechanics, engineers and serious DIYers! Metric (M3 x 0.5 to M14 x 2.0 ) Imperial (#4-40 Coarse to 1/2"-20 Fine)
    Smart Sizing Guide: Say goodbye to mismatched bolts and nuts with our smart nut and bolt sizer! Our Smart Sizing Guide ensures perfect fits every timesaving you time, money, and hassle. Whether you're a pro or DIYer, our easy-to-use charts cover metric & standard sizes for seamless compatibility. No more guesswork, just precision! Upgrade your projects today.
    Sort Your Fasteners Accurately
    Instantly Bolt & Nut Size Identification
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