Printable Thread ID Worksheet
This two-page Letter PDF is for machinists, mechanics, and shop students who need to identify a thread from a bolt or hole. It includes a name and date area, a place to measure the bolt or hole, and a worksheet with problems and answers for major diameter, threads per inch or pitch, inch or metric, thread designation, tap drill, and clearance hole.
Free printable · PDF
- 2 pages
- US Letter — choose “Fit to page” for A4
- PDF, 64 KB
Free for personal, family and classroom use.
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Use the blank worksheet to record your measurements and narrow down the thread size. Then check the answer key to confirm each step, compare the thread details, and fill in the final designation before drilling or tapping.
Good for
- Identify unknown bolts and threaded holes
- Check tap drill and clearance hole sizes
- Teach basic thread measurement steps
Tip: Print at actual size so caliper and pitch gauge measurements stay easy to read.
4 files · PDF, XLSX, DOCX
Get every sheet: Machinist Reference Charts
This sheet plus 3 more in one download, with the editable Excel and Word files. Printable machinist reference set: tap drill and clearance hole chart (inch and metric), NPT pipe tap chart, number and letter drill decimal chart and a thread identification worksheet.
$3.00 USD, one-time 4 files · about $0.75 each
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- 7-day refund
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