8-32 Tap Drill Size: #29 Drill Chart, Clearance & Metric
The 8-32 tap drill is a #29 (0.136 in), or 3.4-3.5 mm. Thread % chart, clearance holes, 8-36 and M4 compared, plus tapping tips.
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Number & Letter Drill Size Chart (#80 to Z, Inch & mm)
Complete number and letter drill size chart from #80 to Z in decimal inches and mm, with common uses and fractional and metric substitutes.
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5/16-18 Tap Drill Size: F Drill Chart, Clearance & Metric
The 5/16-18 tap drill is an F drill (0.257 in) or 6.5 mm. Thread % chart, 17/64 option, clearance holes, Heli-Coil and tapping tips.
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#7 Drill Bit Size: Diameter in Inches & mm (0.201″)
A #7 drill bit is 0.201 in (5.105 mm), the tap drill for 1/4-20. See its closest fractional and metric sizes, uses and substitutes.
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M6 Tap Drill Size: 5.0 mm Drill Chart for M6 x 1.0 Threads
The M6 x 1.0 tap drill is 5.0 mm (or a #9 drill). Thread % chart, clearance holes, M6 fine, inserts and tapping tips in one guide.
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Tap Drill Size Chart: UNC, UNF, Metric & NPT (Printable)
Complete tap drill size chart for UNC, UNF, metric and NPT threads, with clearance holes, a printable quick reference card and formulas to calculate any tap drill.
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3/8-16 Tap Drill Size: Chart, Metric & Clearance Holes
The tap drill for a 3/8-16 UNC thread is a 5/16 in drill (0.3125 in / 7.94 mm). Full chart by thread %, 8.0 mm metric option, clearance holes and 3/8-16 vs M10.
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10-32 Tap Drill Size: Chart, Metric & Clearance Holes
The tap drill for a 10-32 UNF thread is a #21 drill (0.159 in / 4.04 mm). Full chart by thread %, metric substitutes, clearance holes and 10-32 vs 10-24 vs M5.
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1/4-20 Tap Drill Size (with Chart)
The tap drill for a 1/4-20 UNC thread is a #7 drill (0.201 in / 5.11 mm). See the full chart by thread percentage, clearance holes, metric and Heli-Coil sizes.
