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Besly Standard
Spiral Pointed Taps

High Speed Steel
Ground Thread

Spiral Pointed
2 and 3 Flute


Fractional Sizes:
1/4 | 5/16 | 3/8 | 7/16 | 1/2 | 5/8 | 3/4

Also available...

Popular Specials: Catl No. 4120


Left Hand: Catl No. 4120LH

Catalog Number: 4120

Besly Standard Spiral Pointed Taps

Besly
Standard Spiral Pointed Taps have angular flutes at the front end of the tap to propel the chips ahead of the tap. This feature plus the excellent shearing action of the flute make spiral pointed taps ideal for production tapping of thru holes.

Please call 800 435-2965 for current net pricing.

Note: Click the EDP No to check availability.

   
All dimensions are in inches.
  Besly Standard
Spiral Pointed
Taps
Catl No. 4120
Fractional Sizes
   
  Besly Surface Treatments Besly Drill Selector
Tap Size
& TPI
No. of Flutes Chamfer Type P.D. Limits Surface Treat EDP No Pkg Qty Basic Pitch Dia. Overall Length
A
Thread Length
B
Shank Dia.
C
Square Length
D
Square Size
E
1/4-20 2 Plug H1   11751 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 2 Plug H2   11753 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 2 Plug H2 TiN 15787 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 2 Plug H3   11755 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 2 Plug H3 24 15107 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 2 Plug H3 33 14572 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 2 Plug H3 52 15108 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 2 Plug H3 TiN 15788 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 2 Plug H5   11761 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 2 Plug H5 33 14580 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 2 Plug H5 52 15115 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 2 Plug H5 TiN 15789 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 2 Bot H3   11760 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 2 Bot H3 33 15109 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 2 Bot H3 52 15112 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 3 Plug H3   15975 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 3 Plug H3 33 15286 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 3 Plug H3 TiN 15796 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 3 Plug H5   15985 12 .2175 2-1/2 1 .255 5/16 .191
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Tap Size
& TPI
No. of Flutes Chamfer Type P.D. Limits Surface Treat EDP No Pkg Qty Basic Pitch Dia. Overall Length
A
Thread Length
B
Shank Dia.
C
Square Length
D
Square Size
E
1/4-28 2 Plug H1   11861 12 .2268 2-1/2 1 .255 5/16 .191
1/4-28 2 Plug H2   11863 12 .2268 2-1/2 1 .255 5/16 .191
1/4-28 2 Plug H3   11865 12 .2268 2-1/2 1 .255 5/16 .191
1/4-28 2 Plug H3 33 15127 12 .2268 2-1/2 1 .255 5/16 .191
1/4-28 2 Plug H3 52 15128 12 .2268 2-1/2 1 .255 5/16 .191
1/4-28 2 Plug H3 TiN 15797 12 .2268 2-1/2 1 .255 5/16 .191
1/4-28 2 Plug H4   11871 12 .2268 2-1/2 1 .255 5/16 .191
1/4-28 2 Bot H3   11870 12 .2268 2-1/2 1 .255 5/16 .191
1/4-28 3 Plug H2   15991 12 .2268 2-1/2 1 .255 5/16 .191
1/4-28 3 Plug H4   15984 12 .2268 2-1/2 1 .255 5/16 .191
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Tap Size
& TPI
No. of Flutes Chamfer Type P.D. Limits Surface Treat EDP No Pkg Qty Basic Pitch Dia. Overall Length
A
Thread Length
B
Shank Dia.
C
Square Length
D
Square Size
E
5/16-18 2 Plug H1   11954 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 2 Plug H2   11960 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 2 Plug H3   11962 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 2 Plug H3 33 14663 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 2 Plug H3 52 15134 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 2 Plug H3 55 15135 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 2 Plug H3 TiN 15798 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 2 Plug H5   11964 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 2 Plug H5 33 15137 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 2 Plug H5 52 15138 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 2 Bot H3   11963 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 2 Bot H3 33 15136 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 3 Plug H3   11972 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 3 Plug H3 33 15140 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 3 Plug H3 52 15141 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 3 Plug H5   15983 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 3 Plug H5 52 15290 12 .2764 2-23/32 1-1/8 .318 3/8 .238
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Tap Size
& TPI
No. of Flutes Chamfer Type P.D. Limits Surface Treat EDP No Pkg Qty Basic Pitch Dia. Overall Length
A
Thread Length
B
Shank Dia.
C
Square Length
D
Square Size
E
5/16-24 2 Plug H1   12060 12 .2854 2-23/32 1-1/8 .318 3/8 .238
5/16-24 2 Plug H2   12062 12 .2854 2-23/32 1-1/8 .318 3/8 .238
5/16-24 2 Plug H3   12064 12 .2854 2-23/32 1-1/8 .318 3/8 .238
5/16-24 2 Plug H3 33 12073 12 .2854 2-23/32 1-1/8 .318 3/8 .238
5/16-24 2 Plug H3 52 15147 12 .2854 2-23/32 1-1/8 .318 3/8 .238
5/16-24 2 Plug H3 TiN 15799 12 .2854 2-23/32 1-1/8 .318 3/8 .238
5/16-24 2 Plug H4   12070 12 .2854 2-23/32 1-1/8 .318 3/8 .238
5/16-24 2 Bot H3   12065 12 .2854 2-23/32 1-1/8 .318 3/8 .238
5/16-24 2 Bot H3 33 15148 12 .2854 2-23/32 1-1/8 .318 3/8 .238
5/16-24 3 Plug H2   15990 12 .2854 2-23/32 1-1/8 .318 3/8 .238
5/16-24 3 Plug H3   12074 12 .2854 2-23/32 1-1/8 .318 3/8 .238
5/16-24 3 Plug H3 33 15149 12 .2854 2-23/32 1-1/8 .318 3/8 .238
5/16-24 3 Plug H4   15982 12 .2854 2-23/32 1-1/8 .318 3/8 .238
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Tap Size
& TPI
No. of Flutes Chamfer Type P.D. Limits Surface Treat EDP No Pkg Qty Basic Pitch Dia. Overall Length
A
Thread Length
B
Shank Dia.
C
Square Length
D
Square Size
E
3/8-16 3 Plug H1   12163 12 .3344 2-15/16 1-1/4 .381 7/16 .286
3/8-16 3 Plug H2   12165 12 .3344 2-15/16 1-1/4 .381 7/16 .286
3/8-16 3 Plug H3   12171 12 .3344 2-15/16 1-1/4 .381 7/16 .286
3/8-16 3 Plug H3 33 14734 12 .3344 2-15/16 1-1/4 .381 7/16 .286
3/8-16 3 Plug H3 52 15042 12 .3344 2-15/16 1-1/4 .381 7/16 .286
3/8-16 3 Plug H3 TiN 15802 12 .3344 2-15/16 1-1/4 .381 7/16 .286
3/8-16 3 Plug H5   12173 12 .3344 2-15/16 1-1/4 .381 7/16 .286
3/8-16 3 Plug H5 33 15043 12 .3344 2-15/16 1-1/4 .381 7/16 .286
3/8-24 3 Plug H1   12262 12 .3479 2-15/16 1-1/4 .381 7/16 .286
3/8-24 3 Plug H2   12264 12 .3479 2-15/16 1-1/4 .381 7/16 .286
3/8-24 3 Plug H3   12270 12 .3479 2-15/16 1-1/4 .381 7/16 .286
3/8-24 3 Plug H3 33 15052 12 .3479 2-15/16 1-1/4 .381 7/16 .286
3/8-24 3 Plug H3 52 15053 12 .3479 2-15/16 1-1/4 .381 7/16 .286
3/8-24 3 Plug H3 TiN 15803 12 .3479 2-15/16 1-1/4 .381 7/16 .286
3/8-24 3 Plug H4   12272 12 .3479 2-15/16 1-1/4 .381 7/16 .286
3/8-24 3 Plug H4 33 15054 12 .3479 2-15/16 1-1/4 .381 7/16 .286
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Tap Size
& TPI
No. of Flutes Chamfer Type P.D. Limits Surface Treat EDP No Pkg Qty Basic Pitch Dia. Overall Length
A
Thread Length
B
Shank Dia.
C
Square Length
D
Square Size
E
7/16-14 3 Plug H2   12362 12 .3911 3-5/32 1-7/16 .323 13/32 .242
7/16-14 3 Plug H3   12364 12 .3911 3-5/32 1-7/16 .323 13/32 .242
7/16-14 3 Plug H3 33 14735 12 .3911 3-5/32 1-7/16 .323 13/32 .242
7/16-14 3 Plug H3 52 15154 12 .3911 3-5/32 1-7/16 .323 13/32 .242
7/16-14 3 Plug H3 TiN 15806 12 .3911 3-5/32 1-7/16 .323 13/32 .242
7/16-14 3 Plug H5   12370 12 .3911 3-5/32 1-7/16 .323 13/32 .242
7/16-14 3 Plug H5 52 15155 12 .3911 3-5/32 1-7/16 .323 13/32 .242
7/16-20 3 Plug H2   12441 12 .4050 3-5/32 1-7/16 .323 13/32 .242
7/16-20 3 Plug H3   12443 12 .4050 3-5/32 1-7/16 .323 13/32 .242
7/16-20 3 Plug H3 33 14840 12 .4050 3-5/32 1-7/16 .323 13/32 .242
7/16-20 3 Plug H3 52 15160 12 .4050 3-5/32 1-7/16 .323 13/32 .242
7/16-20 3 Plug H3 TiN 15807 12 .4050 3-5/32 1-7/16 .323 13/32 .242
7/16-20 3 Plug H5   12445 12 .4050 3-5/32 1-7/16 .323 13/32 .242
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Tap Size
& TPI
No. of Flutes Chamfer Type P.D. Limits Surface Treat EDP No Pkg Qty Basic Pitch Dia. Overall Length
A
Thread Length
B
Shank Dia.
C
Square Length
D
Square Size
E
1/2-13 3 Plug H1   12551 12 .4500 3-3/8 1-21/32 .367 7/16 .275
1/2-13 3 Plug H2   12553 12 .4500 3-3/8 1-21/32 .367 7/16 .275
1/2-13 3 Plug H3   12555 12 .4500 3-3/8 1-21/32 .367 7/16 .275
1/2-13 3 Plug H3 33 14873 12 .4500 3-3/8 1-21/32 .367 7/16 .275
1/2-13 3 Plug H3 52 15165 12 .4500 3-3/8 1-21/32 .367 7/16 .275
1/2-13 3 Plug H3 TiN 15808 12 .4500 3-3/8 1-21/32 .367 7/16 .275
1/2-13 3 Plug H5   12561 12 .4500 3-3/8 1-21/32 .367 7/16 .275
1/2-13 3 Plug H5 33 15166 12 .4500 3-3/8 1-21/32 .367 7/16 .275
1/2-13 3 Plug H5 52 15167 12 .4500 3-3/8 1-21/32 .367 7/16 .275
1/2-20 3 Plug H1   12650 12 .4675 3-3/8 1-21/32 .367 7/16 .275
1/2-20 3 Plug H2   12652 12 .4675 3-3/8 1-21/32 .367 7/16 .275
1/2-20 3 Plug H3   12654 12 .4675 3-3/8 1-21/32 .367 7/16 .275
1/2-20 3 Plug H3 33 15174 12 .4675 3-3/8 1-21/32 .367 7/16 .275
1/2-20 3 Plug H3 52 15175 12 .4675 3-3/8 1-21/32 .367 7/16 .275
1/2-20 3 Plug H3 TiN 15809 12 .4675 3-3/8 1-21/32 .367 7/16 .275
1/2-20 3 Plug H5   12660 12 .4675 3-3/8 1-21/32 .367 7/16 .275
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Tap Size
& TPI
No. of Flutes Chamfer Type P.D. Limits Surface Treat EDP No Pkg Qty Basic Pitch Dia. Overall Length
A
Thread Length
B
Shank Dia.
C
Square Length
D
Square Size
E
5/8-11 3 Plug H3   12862 3 .5660 3-13/16 1-13/16 .480 9/16 .360
5/8-11 3 Plug H3 33 15188 3 .5660 3-13/16 1-13/16 .480 9/16 .360
5/8-11 3 Plug H3 52 15189 3 .5660 3-13/16 1-13/16 .480 9/16 .360
5/8-11 3 Plug H3 TiN 15814 3 .5660 3-13/16 1-13/16 .480 9/16 .360
5/8-11 3 Plug H5   15981 3 .5660 3-13/16 1-13/16 .480 9/16 .360
5/8-11 3 Plug H5 33 15288 3 .5660 3-13/16 1-13/16 .480 9/16 .360
5/8-11 3 Plug H5 52 15289 3 .5660 3-13/16 1-13/16 .480 9/16 .360
5/8-18 3 Plug H3   15641 3 .5889 3-13/16 1-13/16 .480 9/16 .360
5/8-18 3 Plug H3 33 15284 3 .5889 3-13/16 1-13/16 .480 9/16 .360
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Tap Size
& TPI
No. of Flutes Chamfer Type P.D. Limits Surface Treat EDP No Pkg Qty Basic Pitch Dia. Overall Length
A
Thread Length
B
Shank Dia.
C
Square Length
D
Square Size
E
3/4-10 3 Plug H3   13025 3 .6850 4-1/4 2 .590 11/16 .442
3/4-10 3 Plug H3 33 15024 3 .6850 4-1/4 2 .590 11/16 .442
3/4-10 3 Plug H3 52 15025 3 .6850 4-1/4 2 .590 11/16 .442
3/4-10 3 Plug H3 TiN 15815 3 .6850 4-1/4 2 .590 11/16 .442
3/4-10 3 Plug H5   15980 3 .6850 4-1/4 2 .590 11/16 .442
3/4-10 3 Plug H5 52 15287 3 .6850 4-1/4 2 .590 11/16 .442
3/4-16 3 Plug H3   15642 3 .7094 4-1/4 2 .590 11/16 .442
3/4-16 3 Plug H3 33 15285 3 .7094 4-1/4 2 .590 11/16 .442
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