Metric SHCS Hole & Counterbore Sizes Nominal Screw size Clearance Hole Dia. mm Counterbore Dia. mm Countersink Dia. mm Tapping Drill mm Close Normal ISO M Fine M3 - M4 - M5 - M6 - M8 M10 M12 M14 M16 M20 M24 M30 - Imperial SHCS Hole & Counterbore Sizes Nominal Screw size Clearance Hole Dia. mm Counterbore Dia. mm Countersink Dia. mm Tapping Drill mm Close Normal UNF UNC 8 10 1/4" 5/16" 3/8" 7/16" 1/2" 5/8" 3/4" 7/8" 1" 1 1/4" 50 35
Metric SHCS Hole & Counterbore Sizes Nominal Screw Size Clearance Hole Dia. mm Counterbore Dia. mm Countersink Dia. mm Tapping Drill mm Close Normal ISO M Fine M3 3.4 3.7 6.5 3.6 0.5 - M4 4.4 4.8 8.25 4.7 0.7 - M5 5.4 5.8 9.75 5.7 4.2 - M6 6.4 6.8 11.25 6.8 5.0 - ...
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1 Metric SHCS Hole & Counterbore Sizes Nominal Screw size Clearance Hole Dia. mm Counterbore Dia. mm Countersink Dia. mm Tapping Drill mm Close Normal ISO M Fine M3 - M4 - M5 - M6 - M8 M10 M12 M14 M16 M20 M24 M30 - Imperial SHCS Hole & Counterbore Sizes Nominal Screw size Clearance Hole Dia. mm Counterbore Dia. mm Countersink Dia. mm Tapping Drill mm Close Normal UNF UNC 8 10 1/4" 5/16" 3/8" 7/16" 1/2" 5/8" 3/4" 7/8" 1" 1 1/4" 50 35
Metric Wire Gauges (see table below) Metric Gauge: In the Metric Gauge scale, the gauge is 10 times the diameter in millimeters, thus a 50 gauge metric wire would be 5 mm in diameter. Note that in AWG the diameter goes up as the gauge goes down. Metric is the opposite. Probably because of this confusion, most of the
US and Metric Thread Sizes mm 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180. Title: US-and-Metric-Thread-Sizes Created Date: 2/16/2017 1:42:53 PM
metric tap Drill SizeS metric tap tap Drill (mm) Decimal (inch) m1.6 x 0.35 1.25 .0492 m1.8 x 0.35 1.45 .0571 m2 x 0.4 1.60 .0630 m2.2 x 0.45 1.75 .0689 m2.5 x 0.45 2.05 .0807 m3 x 0.5 2.50 .0984 m3.5 x 0.6 2.90 .1142 m4 x 0.7 3.30 .1299 m4.5 x 0.75 3.70 .1457 m5 x 0.8 4.20 .1654 m6 x 1 5.00 .1968 m7 x 1 6.00 .2362 m8 x 1.25 6.70 .2638 m8 x 1 7 ...
FORMULA FOR TAP/DRILL SIZES (METRIC) Figures in table show amount to subtract from O.D. of screw to obtain specific percentages of thread. Select nearest size commercial stock drill. METHOD 1: Drilled Hole Size (mm) = Basic Major Dia. Of Thread (mm) - *Use whole numbers for % of thread…for 65%, use 65 (not .65). METHOD 2:
AWG VS. METRIC WIRE SIZES DIESEL LOCOMOTIVE AND CAR WIRING CABLE Conductor Stranding Approx. Size Awg Circular Mil Area Conductor Diameter Inches 19/.0117 16 2601 .060 19/27 14 3831 .070 19/25 12 6088 .090 27/24 10 10910 .123 37/24 8 14950 .140 61/24 6 24640 .180 91/24 5 36760 .220 105/24 4 42420 .240 125/24 3 50500 .260 150/24 2 60600 .325 225 ...
bolt sizes f - 568 class 4.6 f - 568 class 8.8 f - 588 class 8.8.3 f - 568 class 9.8 f - 568 class 10.9 a - 325m type 1 or 2 a - 325m type metric english 3 (mm) (inches) hole diam (mm) english - astm grade specified a - 449 type 1 a - 354 grade bd m6 m8 m10 m12 m14 1/4 5/16 7/16 1/2 9/16 7 9 12 14 16 not req'd not req'd a - 325 ...
Hole Sizes for Cut Tapping These charts are supplied as a recommendation only. Actual sizes may vary depending on application and the material being tapped. Other thread and hole sizes are available upon request or on our website drill size calculator.
ASTM SIZES Equivalent Aluminium copper area Area Bluebell 1033.5 523.4 650 319.3 37/4.244 29.71 1443 78.59 0.05490 Marigold 1113 564.3 700 344.2 61/3.432 30.89 1556 86.34 0.05092 Hawthorn 1192.5 604.1 750 368.5 61/3.551 31.96 1665 92.43 0.04957 Narcissus 1272 644.6 800 393.2 61/3.668 33.01 1777 98.62 0.04458