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Besly Standard 
Turbo Cut® Taps

High Speed Steel
Ground Thread

Fast Spiral Flute
2, 3 and 4 Flute


Metric Sizes:
M3 | M3.5 | M4 | M4.5 | M5 | M6 | M7 | M8 | M10 | M12

 Catalog Number: 4144

Besly Standard Turbo Cut® Taps    Besly Turbo Cut® Taps have a revolutionary fast spiral flute design that does a one-pass job in deep, blind holes and makes tapping cleaner and easier in thru holes. Turbo Cut® Taps provide the utmost accuracy in ductile materials while maintaining an extremely high rate of production.

Please call 800 435-2965 for current prices.

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All dimensions are in inches.                 
  Besly Standard
Turbo Cut® Taps
Catl No. 4144
Metric Sizes		    
 
Besly Surface Treatments Besly Drill Selector
Tap Size
& TPI		 Inch Equivalent No. of Flutes Cham Type P.D. Limits Surface Treat EDP No Pkg Qty Overall Length
A		 Thread Length
B		 Shank Dia.
C		 Square Length
D		 Square Size
E
M3 x 0.5 .1182 x 50.80 2 Plug D3   18172 12 1.940 .620 .141 .190 .110
M3 x 0.5 .1182 x 50.80 2 Plug D3 TiN 15650 12 1.940 .620 .141 .190 .110
M3 x 0.5 .1182 x 50.80 2 Bot D3   18173 12 1.940 .620 .141 .190 .110
M3 x 0.5 .1182 x 50.80 2 Bot D3 TiN 15652 12 1.940 .620 .141 .190 .110
M3.5 x 0.6 .1378 x 42.33 2 Plug D3   18175 12 2.000 .690 .141 .190 .110
M3.5 x 0.6 .1378 x 42.33 2 Bot D4   18176 12 2.000 .690 .141 .190 .110
M4 x 0.7 .1575 x 36.29 3 Plug D4   18178 12 2.120 .750 .168 .250 .131
M4 x 0.7 .1575 x 36.29 3 Plug D4 TiN 15656 12 2.120 .750 .168 .250 .131
M4 x 0.7 .1575 x 36.29 3 Bot D4   18179 12 2.120 .750 .168 .250 .131
M4 x 0.7 .1575 x 36.29 3 Bot D4 TiN 15671 12 2.120 .750 .168 .250 .131
M4.5 x 0.75 .1772 x 33.87 3 Plug D4   18181 12 2.380 .880 .194 .250 .152
M4.5 x 0.75 .1772 x 33.87 3 Bot D4   18182 12 2.380 .880 .194 .250 .152
M5 x 0.8 .1969 x 31.75 3 Plug D4   18184 12 2.380 .880 .194 .250 .152
M5 x 0.8 .1969 x 31.75 3 Plug D4 TiN 15672 12 2.380 .880 .194 .250 .152
M5 x 0.8 .1969 x 31.75 3 Bot D4   18185 12 2.380 .880 .194 .250 .152
M5 x 0.8 .1969 x 31.75 3 Bot D4 TiN 15673 12 2.380 .880 .194 .250 .152
M6 x 1 .2363 x 25.40 3 Plug D5   18187 12 2.500 1.000 .255 .310 .191
M6 x 1 .2363 x 25.40 3 Plug D5 TiN 15674 12 2.500 1.000 .255 .310 .191
M6 x 1 .2363 x 25.40 3 Bot D5   18188 12 2.500 1.000 .255 .310 .191
M6 x 1 .2363 x 25.40 3 Bot D5 TiN 15675 12 2.500 1.000 .255 .310 .191
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Tap Size
& TPI		 Inch Equivalent No. of L/G Cham Type P.D. Limits Surface Treat EDP No Pkg Qty Overall Length
A		 Thread Length
B		 Shank Dia.
C		 Square Length
D		 Square Size
E
M7 x 1 .2756 x 25.40 3 Plug D5   18190 12 2.720 1.120 .318 .380 .238
M7 x 1 .2756 x 25.40 3 Bot D5   18191 12 2.720 1.120 .318 .380 .238
M8 x 1.25 .3150 x 20.32 3 Plug D5   18196 12 2.720 1.120 .318 .380 .238
M8 x 1.25 .3150 x 20.32 3 Plug D5 33 15545 12 2.720 1.120 .318 .380 .238
M8 x 1.25 .3150 x 20.32 3 Plug D5 TiN 15676 12 2.720 1.120 .318 .380 .238
M8 x 1.25 .3150 x 20.32 3 Bot D5   18197 12 2.720 1.120 .318 .380 .238
M8 x 1.25 .3150 x 20.32 3 Bot D5 33 15488 12 2.720 1.120 .318 .380 .238
M8 x 1.25 .3150 x 20.32 3 Bot D5 TiN 15677 12 2.720 1.120 .318 .380 .238
M8 x 1 .3150 x 20.32 3 Plug D5   18193 12 2.720 1.120 .318 .380 .238
M8 x 1 .3150 x 20.32 3 Bot D5   18194 12 2.720 1.120 .318 .380 .238
M10 x 1.5 .3937 x 16.93 3 Plug D6   18202 12 2.940 1.250 .381 .440 .286
M10 x 1.5 .3937 x 16.93 3 Plug D6 33 15496 12 2.940 1.250 .381 .440 .286
M10 x 1.5 .3937 x 16.93 3 Plug D6 TiN 15678 12 2.940 1.250 .381 .440 .286
M10 x 1.5 .3937 x 16.93 3 Bot D6   18203 12 2.940 1.250 .381 .440 .286
M10 x 1.5 .3937 x 16.93 3 Bot D6 33 15497 12 2.940 1.250 .381 .440 .286
M10 x 1.5 .3937 x 16.93 3 Bot D6 TiN 15679 12 2.940 1.250 .381 .440 .286
M10 x 1.25 .3937 x 16.93 3 Plug D5   18199 12 2.940 1.250 .381 .440 .286
M10 x 1.25 .3937 x 16.93 3 Bot D5   18200 12 2.940 1.250 .381 .440 .286
M12 x 1.75 .4725 x 14.51 3 Plug D6   18208 12 3.380 1.660 .367 .440 .275
M12 x 1.75 .4725 x 14.51 3 Plug D6 TiN 15683 12 3.380 1.660 .367 .440 .275
M12 x 1.75 .4725 x 14.51 3 Bot D6   18209 12 3.380 1.660 .367 .440 .275
M12 x 1.75 .4725 x 14.51 3 Bot D6 TiN 15684 12 3.380 1.660 .367 .440 .275
M12 x 1.25 .4725 x 20.32 3 Plug D5   18205 12 3.380 1.660 .367 .440 .275
M12 x 1.25 .4725 x 20.32 3 Bot D5   18206 12 3.380 1.660 .367 .440 .275
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INTERNAL THREAD - CLASS 6H
 

Nominal Size and Pitch

 Millimeters Inches
Minor Diameter Pitch Diameter  

Major Dia.

 Minor Diameter Pitch Diameter  

Major Dia.
Min. Max. Min. Max. Min. Max. Min. Max.
M3 x 0.5 2.459 2.599 2.675 2.775 3.000 .0968 .1023 .1053 .1092 .1181
M3.5 x 0.6 2.850 3.010 3.110 3.222 3.500 .1122 .1185 .1224 .1268 .1378
M4 x 0.7 3.242 3.422 3.545 3.663 4.000 .1276 .1347 .1396 .1442 .1575
M4.5 x 0.75 3.688 3.878 4.013 4.131 4.500 .1452 .1526 .1580 .1626 .1772
M5 x 0.8 4.134 4.334 4.480 4.605 5.000 .1628 .1706 .1764 .1813 .1968
M6 x 1 4.917 5.153 5.350 5.550 6.000 .1936 .2029 .2106 .2165 .2362
M7 x 1 5.917 6.153 6.350 6.500 7.000 .2330 .2422 .2500 .2559 .2756
M8 x 1.25 6.647 6.912 7.188 7.348 8.000 .2617 .2721 .2830 .2893 .3150
M8 x 1 6.917 7.153 7.350 7.500 8.000 .2723 .2816 .2894 .2953 .3150
M10 x 1.5 8.376 8.676 9.026 9.206 10.000 .3298 .3416 .3554 .3624 .3937
M10 x 1.25 8.647 8.912 9.188 9.348 10.000 .3404 .3509 .3617 .3680 .3937
M12 x 1.75 10.106 10.441 10.863 11.063 12.000 .3979 .4111 .4277 .4356 .4724
M12 x 1.25 10.647 10.912 11.188 11.368 12.000 .4192 .4296 .4405 .4476 .4724
The above thread dimensions are in agreement with ANSI B1.13M-1979 and current ISO standards. Go to the top of this page.
 
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