Identifying mystery hardware in your shop becomes an effortless task when you have the right reference tool on your workbench. The Bolt Gauges from Specialty Fasteners are engineered to remove the guesswork from your assembly process, allowing you to instantly verify both diameter and pitch. This tool is a standout among professional nut and bolt tools, providing a physical template that is much more reliable than a simple tape measure.

How easy this makes determining bolt sizes is truly remarkable; you simply thread your fastener into the clearly labeled holes to confirm the size or use the specialized teeth to check thread count. Whether you are organizing a bin of commercial fasteners or verifying the precise specs of your racing fasteners before a rebuild, this gauge ensures a perfect match every time. As the best bolt gauge for both metric and standard applications, it is a staple of our nuts and bolts online store, designed to prevent cross-threading and costly installation errors. Order today.