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Inch Fastener Sizing
Check common inch nut and bolt sizes against the gauge’s marked openings.
Best Seller
BoltSizeIt Pocket Nut & Bolt Measurement Gauge (Inch & Metric)
Compact, durable, and easy to use, it's a handy measuring tool for the workshop, toolbox, or job site.
$8.99
Fast Shipping
Orders ship quickly
Built to Last
Durable construction
Shop Trusted
Used by professionals
Small Business
U.S.-based business
ONE POCKET GAUGE. MULTIPLE FUNCTIONS.
Identify Nut & Bolt Sizes with Confidence
Find inch and metric fastener sizes, check thread pitch references, and read measurements on both sides of this compact gauge.
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Metric Fastener Sizing
Identify metric nut and bolt sizes using the clearly marked metric gauge.
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Thread Pitch Reference
Use the printed inch and metric thread pitch reference to help identify fasteners.
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Two-Sided Size Reference
Flip the gauge over to check additional size markings without another tool.
Product Specifications
Designed for everyday use.
Material
Impact-resistant plastic compatible with shop fluids.
Thread Pitch
Integrated thread pitch gauge ridges measure both US and Metric pitch.
Bolt Sizing
Instantly identify diameters by pushing bolts through the sizing holes (Inch & Metric).
Nut & Washer Gauging
Specialized profiles allow you to gauge Hex Nuts and Washers (USS, SAE, and Metric).
Drill Bit Check
Confirms sizes for twist drills so you select the right bit every time.
Specialty Screws
Includes a unique notch specifically designed to gauge flat-headed metal and wood screws.
Dual Rulers
Marked with inches and millimeters for worldwide use.
Pocket Size
Dimensions (8-5/8″ x 3-1/4″) are perfectly sized to fit in a standard shirt or back pocket.
Trusted by Professionals
Why Pros Keep This in the Toolbox
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Inch & Metric Sizing
Identify nut and bolt sizes in both inch and metric measurements.
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Quick Hardware Checks
Match fasteners to marked sizes without searching through reference charts.
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Compact & Portable
Keep this handy gauge at your bench, in your toolbox, or on the job.
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Built for Everyday Tasks
A practical measuring aid for repairs, maintenance, and sorting hardware.
Special Wholesale Pricing
For Businesses & Bulk Orders
Get special pricing on BoltSizeIt products for bulk orders and business purchases.
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