Printable Bolt Diameter Gauge
This 1-page letter-size PDF is for anyone checking bolt diameter by eye or with a quick printout. It shows an actual-size bolt diameter gauge with coin drawings for easy visual comparison.
Free printable · PDF
- 1 page
- US Letter — choose “Fit to page” for A4
- PDF, 61 KB
Free for personal, family and classroom use.
Print the sheet at 100% size, then place a bolt over the matching circle or compare it to the coin drawings on the page. Use it to identify a bolt size, sort mixed fasteners, or confirm measurements before buying replacements.
Good for
- Check bolt diameter quickly
- Sort bolts and fasteners
- Compare size before replacement
Tip: Print at 100% with no scaling, then verify the page against a ruler if needed.
5 files · PDF, XLSX
Get every sheet: Nut & Bolt Size Chart Pack
This sheet plus 4 more in one download, with the editable Excel files. Printable inch and metric hex nut charts (wrench size, thickness, threads), an actual-size bolt diameter gauge, a bolt grade marking chart and an Excel fastener lookup.
$5.00 USD, one-time 5 files · about $1.00 each
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