Stop guessing the size of every bolt, nut and screw in your workshop. This thread checker puts 57 thread sizes and 19 drill gauges on a single compact plate, so you can identify fasteners in seconds instead of digging through drawers or making trips to the hardware store.
Built from anodized aluminum 6061 with a SUS 304 stainless steel bolt, the plate stays light in the hand while resisting corrosion and everyday wear. Laser-engraved markings keep the sizes crisp and readable, even after years of use on the bench or hanging on the shop wall.
Whether you are restoring a car, repairing machinery, or sorting a mixed bin of hardware, this gauge gives you a fast, reliable answer every time.
Place the bolt or nut against the gauge, slide it along the slots until you find the matching fit, and read the size directly from the engraved marking. The same plate works for internal and external threads, making it useful for mechanics, machinists, DIY builders, and anyone who works with mixed hardware.
Keep it on the bench, in the garage, or on a tool wall so you can verify a fastener before you reach for a wrench or a drill.