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Besly
Special Purpose
Spark Plug Taps

High Speed Steel
Ground Thread

Straight Flute
4 Flute


Metric Sizes:
M10 | M12 | M14 | M18

Catalog Number: 4114

Besly Special Purpose Spark Plug Taps

These Besly Special Purpose Taps as the name indicates, are available for tapping metric size holes for spark plugs in accordance with S.A.E. specifications.

Please call 800 435-2965 for current net pricing.

Note: Click the EDP No to check availability.

   
All dimensions are in inches.
  Besly Special Purpose
Spark Plug
Taps
Catl No. 4114
Metric Sizes
 
   
  Besly Surface Treatments Besly Drill Selector
Tap Size
& TPI
Decimal Equivalent No. of Flutes Chamfer 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
  M10 x 1 .3937 x 25.40 4 Plug H3   18374 12 3.160 1.440 .323 .410 .242
  M10 x 1 .3937 x 25.40 4 Bot H3   18375 12 3.160 1.440 .323 .410 .242
  M12 x 1.25 .4725 x 20.32 4 Plug H3   18377 12 3.380 1.660 .367 .440 .275
  M12 x 1.25 .4725 x 20.32 4 Bot H3   18378 12 3.380 1.660 .367 .440 .275
  M14 x 1.25 .5512 x 20.32 4 Plug H4   12855 3 3.590 1.660 .429 .500 .322
  M14 x 1.25 .5512 x 20.32 4 Bot H4   15570 3 3.590 1.660 .429 .500 .322
  M18 x 1.5 .7087 x 16.93 4 Plug H4   12860 3 2.030 1.810 .542 .620 .406
  M18 x 1.5 .7087 x 16.93 4 Bot H4   15571 3 2.030 1.810 .542 .620 .406
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