Nut and Bolt Thread Checker, SAE & Metric Bolt Size Finder Tool

Price: $17.99
(as of Oct 15, 2026 07:30:09 UTC – Details)

From the brand

51-in-1 Bolt Size Finder

51-in-1 Bolt Size Finder

Setup Blocks Height Gauge Set

51-in-1 Precision Tool: Our bolt size finder combines 16 Metric and 16 Imperial nut and bolt thread checker sizes, plus 19 drill bit gauge holes – all in one compact, CNC-machined aluminum body. Engineered to Go & No-Go Class 2A ANSI standards, it ensures flawless accuracy for mechanics, carpenters, and DIYers.
Durable & Corrosion-Resistant: Crafted from high-strength 6061 aluminum with an anodized finish and nickel-plated bolts, our thread checker resists wear, rust, and deformation. Laser-etched markings stay sharp for life, even under heavy workshop use.
Effortless Identification: Quickly match bolts, nuts, or drill bits to the right size with our intuitive screw size chart design. No guesswork – just slide, fit, and go! Ideal for woodworking, auto repair, and machinery maintenance.
Workshop-Ready Design: Features non-slip rubber feet to protect surfaces and a compact size for easy storage or travel. Hang it or place it flat – this thread gauge adapts to your workflow.
Universal Compatibility: Covers Metric (M3–M14) and Imperial (#4–1/2″) threads, plus drill bits (1/16″–1/2″). A must-have for pros and hobbyists alike!
Customers find the thread checker to be a well-made tool with heavy-duty aluminum construction, and one customer notes it covers a wide range of Metric and SAE sizes. They appreciate its readability, with the black version being easier to read, and consider it a great addition to any workbench. The product receives positive feedback for its functionality, durability, and value for money, with customers noting it’s worth every penny.