- Bolt Thread Checker in both Standard and Metric sizes.
- Nut Thread Checker in both Standard and Metric sizes.
- Bolt Length Checker in both Standard and Metric sizes.
- Screw Size Checker in both Standard and Metric sizes.
- Mounted on Heavy-Duty 1/2 Inch Sintra board.
Quickly identify the most common size nuts & bolts in one easy-to-display center! Starting from the top you have 28 female threaded holes to identify common inch & metric bolt sizes, following that you'll find 28 male threaded studs to identify nut sizes and at the bottom you'll find screw diameter & bolt length checkers. Mounted on heavy-duty 1/2 Inch Sintra board and predrilled for easy installation, the Wall Mounted Thread Checker is ready to start saving you time and money by ensuring you have the right fastener for the job - the first time!