Here we giving some useful charts for daily machining.Keep in your library as daily tips:All the dimensions in metric.
ALL METRIC TAP HOLE'S COUNTER BORE SIZE:
METRIC SOCKET-HEAD CAP SCREWS
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SCREW DIA
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COUNTERBORE DIA
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COUNTERBORE DEPTH
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COUNTERSINK DIA
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CLEARANCE DIA (NORMAL FIT)
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CLEARANCE DIA (CLOSE FIT)
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M1,6
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3,50mm
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1,6mm
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2,0mm
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1,95mm
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1,80mm
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M2
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4,40mm
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2mm
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2,6mm
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2,40mm
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2,20mm
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M2,5
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5,40mm
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2,5mm
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3,1mm
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3,00mm
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2,70mm
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M3
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6,50mm
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3mm
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3,6mm
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3,70mm
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3,40mm
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M4
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8,25mm
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4mm
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4,7mm
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4,80mm
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4,40mm
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M5
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9,75mm
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5mm
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5,7mm
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5,80mm
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5,40mm
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M6
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11,20mm
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6mm
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6,8mm
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6,80mm
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6,40mm
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M8
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14,50mm
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8mm
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9,2mm
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8,80mm
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8,40mm
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M10
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17,50mm
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10mm
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11,2mm
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10,80mm
|
10,50mm
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M12
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19,50mm
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12mm
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14,2mm
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13,00mm
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12,50mm
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M14
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22,50mm
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14mm
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16,2mm
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15,00mm
|
14,50mm
|
M16
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25,50mm
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16mm
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18,2mm
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17,00mm
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16,50mm
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M20
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31,50mm
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20mm
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22,4mm
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21,00mm
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20,50mm
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M24
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37,50mm
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24mm
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26,4mm
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25,00mm
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24,50mm
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M30
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47,50mm
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30mm
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33,4mm
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31,50mm
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31,00mm
|
M36
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56,50mm
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36mm
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39,4mm
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37,50mm
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37,00mm
|
M42
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66,00mm
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42mm
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45,6mm
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44,00mm
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43,00mm
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M48
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75,00mm
|
28mm
|
52,6mm
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50,00mm
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49,00mm
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TAP HOLE FOR DRILLING:
METRIC COARSE SIZES---------------------------- TAP DRILL SIZE SIZE ---------------------------- 1mm x .25 .75mm 1.1 x .25 .85 1.2 x .25 .95 1.4 x .3 1.1 1.6 x .35 1.25 1.7 x .35 1.3 1.8 x .35 1.45 2 x .4 1.6 2.2 x .45 1.75 2.5 x .45 2.05 3 x .5 2.5 3.5 x .6 2.9 4 x .7 3.3 4.5 x .75 3.7 5 x .8 4.2 6 x 1 5 7 x 1 6 8 x 1.25 6.8 9 x 1.25 7.8 10 x 1.5 8.5 11 x 1.5 9.5 12 x 1.75 10.2 14 x 2 12 16 x 2 14 18 x 2.5 15.5 20 x 2.5 17.5 22 x 2.5 19.5 24 x 3 21 27 x 3 24 30 x 3.5 26.5 33 x 3.5 29.5 36 x 4 32 39 x 4 35 ---------------------------- | METRIC FINE SIZES---------------------------- TAP DRILL SIZE SIZE ---------------------------- 4 mm x .35 3.6mm 4 x .5 3.5 5 x .5 4.5 6 x .5 5.5 6 x .75 5.25 7 x .75 6.25 8 x .5 7.5 8 x .75 7.25 8 x 1 7 9 x 1 8 10 x .75 9.25 10 x 1 9 10 x 1.25 8.8 11 x 1 10 12 x .75 11.25 12 x 1 11 12 x 1.5 10.5 14 x 1 13 14 x 1.25 12.8 14 x 1.5 12.5 16 x 1 15 16 x 1.5 14.5 18 x 1 17 18 x 2 16 20 x 1 19 20 x 1.5 18.5 20 x 2 18 22 x 1 21 22 x 1.5 20.5 22 x 2 20 24 x 1.5 22.5 24 x 2 22 26 x 1.5 24.5 27 x 1.5 25.5 27 x 2 25 28 x 1.5 26.5 30 x 1.5 28.5 30 x 2 28 33 x 2 31 36 x 3 33 39 x 3 36 |
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