BoltSizeIt Internally Threaded Screw Gauge + Drill/Tap Gauge (Inch & Metric)
$8.99
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Built to Last
Durable construction
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Used by professionals
Small Business
U.S.-based business
Product Specifications
Designed for everyday use.
Size Range
Drill Inch holes from #0 to 3/4" and Metric from 1.25mm to 14mm
Material
Specially formulated polymer designed to resist water, oil, grease, alcohol and just about anything else you can throw at it.
Thread Pitch
Unified National Standard Inch #0 to 3/4" & ISO Metric M1.6 to M16
Inch/SAE Sizing
Covers the full range of standard sizes from tiny #0 up to 3/4" in both Coarse and Fine threads.
Metric Sizing
Identifies standard ISO metric sizes from 6mm up to 16mm.
Dual Standard
Checks both Imperial and Metric fasteners on one tool.
Portable
Lightweight alternative to heavy steel thread checkers.
High Contrast
White text on dark plastic makes reading sizes easy in low light.
Trusted by Professionals
Why Pros Keep This in the Toolbox
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