Nut and Bolt Thread Checker Inch & Metric Thread Gauge Nut and Bolt Size Gauge For Sale

• 🔩 【26 Thread Size Gauges】Identify common fasteners with 14 SAE/Inch gauges and 12 metric gauges in one organized checker, covering bolt, stud, nut, and female-threaded part size matching.

• 🎯 【Fast Thread And Pitch Checks】Insert a nut into the female gauge or screw a bolt into the male gauge, rotate a few times, and read the matching thread size and pitch without calipers or guesswork.

• 📏 【SAE And Metric Coverage】Includes inch sizes from 6-32 through 1/2-20 plus metric sizes from M4-0.7 through M12-1.75, helping match many commonly used replacement fasteners.

• 🛡️ 【Double-Sided Etched Markings】Double-sided laser-etched size markings are designed not to fade, allowing you to read the gauge information from either side without turning the checker around.

• 🧰 【Portable Organized Gauge Set】Gauges are strung on steel wire with gold beads to keep sizes together and accessible, making this thread checker easy to carry in a toolbox, pocket, or garage workbench.

• Gauge Count: 26 total gauges

• Inch Gauge Count: 14 SAE/Inch gauges

• Metric Gauge Count: 12 metric gauges

• Inch Thread Sizes: 6-32, 8-32, 10-24, 10-32, 1/4-20, 1/4-28, 5/16-18, 5/16-24, 3/8-16, 3/8-24, 7/16-20, 7/16-24, 1/2-13, 1/2-20

• Metric Thread Sizes: M4-0.7, M5-0.8, M6-1.0, M7-1.0, M8-1.0, M8-1.25, M10-1.0, M10-1.25, M10-1.5, M12-1.25, M12-1.5, M12-1.75

• Material: 6061 aluminum

• Finish: Anodized

• Markings: Double-sided laser-etched

• Gauge Organization: Steel wire with gold beads

• Compatible Fasteners: Bolts, studs, nuts, and female-threaded parts

• Intended Uses: Metalworking, car repair, home improvement, woodworking, and fastener quality control

• Features & Tips
• Quickly identify 26 common SAE and metric nut and bolt thread sizes and pitches without relying on calipers or guesswork.
• For best results, start the fastener straight in the matching gauge and rotate it gently; a correct thread size should engage smoothly without forcing it.

This nut and bolt thread checker combines 14 SAE/Inch gauges with 12 metric gauges for fastener identification across two common measurement systems. Inch coverage runs from 6-32 to 1/2-20, while metric coverage runs from M4-0.7 to M12-1.75. It is useful when matching an unknown fastener to a replacement at home, in the garage, or during metalworking tasks. Instead of sorting through loose hardware, you can verify the thread before buying or installing a replacement.

Use the female gauge to check nuts and other female-threaded parts, or screw a bolt into the male gauge to identify its thread. Rotate the fastener a few times to confirm that it engages correctly, then read the marked size and pitch. This direct fit-checking approach removes much of the uncertainty involved in comparing similar-looking bolts. It is especially helpful when thread pitch matters and visual comparison alone is not enough.

The seller notes describe a lightweight yet sturdy 6061 aluminum checker with an anodized finish for rust resistance. Double-sided laser-etched markings are intended to remain readable over time, even with repeated handling in a toolbox or work area. The two-sided layout means sizes can be read without rotating the gauge to find the marking. This practical construction supports frequent fastener checks for repair, assembly, and quality-control work.

Each gauge is held together on steel wire with gold beads, keeping the set organized rather than scattered among loose tools and hardware. Its compact format is easy to keep in a toolbox, pocket, or on a garage workbench when a fastener needs to be identified quickly. Mechanics, DIY users, woodworkers, and metalworking users can use it for car repairs, home improvement, and general replacement-hardware matching. It helps reduce delays caused by selecting the wrong nut or bolt size.

• 1 x Nut and Bolt Thread Checker Inch & Metric Thread Gauge Nut and Bolt Size Gauge N

• Your item Ships Same Day to 1 Business Day from our Location.