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Besly Standard 
Straight Flute Taps

High Speed Steel
Ground Thread

Straight Flute
4 and 6 Flute


Fractional Sizes:
1/4 | 5/16 | 3/8 | 7/16 | 1/2 |
9/16 | 5/8 | 11/16 | 3/4 | 7/8 |
1 | 1-1/8 | 1-1/4 | 1-3/8 | 1-1/2


Also available...

Popular Specials: Catl No. 4111


Left Hand: Catl No. 4111LH

Catalog Number: 4111

Besly Standard  Straight Flute Taps     

Besly Standard Straight Flute Taps are for general use in production tapping or hand operations. A choice of taper, plug and bottoming chamfer styles provide great versatility in tough materials with blind or thru holes. The taper style starts the thread square with the hole. The plug style is generally used in thru holes or in blind holes with sufficient clearance. The bottoming style generates the thread to the bottom of the hole. These taps are also available in complete sets of one taper, one plug and one bottoming tap of the same size.

Please call 800 435-2965 for current prices.

Printing Hint: Reduce the text size and turn off background printing before printing this page.

 
All dimensions are in inches.                 
  Besly Standard
Straight Flute
Taps
Catl No. 4111

Fractional Sizes
   
 
Besly Surface Treatments Besly Drill Selector
Tap Size
& TPI
No. of Flutes Cham 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 4 Taper H1   11810 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 4 Taper H2   11813 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 4 Taper H3   11820 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 4 Taper H3 33 15122 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 4 Plug H1   11811 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 4 Plug H2   11814 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 4 Plug H3   11821 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 4 Plug H3 33 14612 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 4 Plug H3 52 15123 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 4 Plug H3 TiN 15704 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 4 Plug H5   11831 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 4 Bot H1   11812 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 4 Bot H2   11815 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 4 Bot H3   11822 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 4 Bot H3 33 14613 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 4 Bot H3 52 15124 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 4 Bot H3 55 15125 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 4 Bot H3 TiN 15705 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 4 Bot H5   11832 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 4 Bot H5 55 15126 12 .2175 2-1/2 1 .255 5/16 .191
1/4-20 4 Set H2   16811 1 .2175 2-1/2 1 .255 5/16 .191
1/4-20 4 Set H3   11825 1 .2175 2-1/2 1 .255 5/16 .191
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Tap Size
& TPI
No. of Flutes Cham 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 4 Taper H2   11915 12 .2268 2-1/2 1 .255 5/16 .191
1/4-28 4 Taper H3   11922 12 .2268 2-1/2 1 .255 5/16 .191
1/4-28 4 Plug H1   11913 12 .2268 2-1/2 1 .255 5/16 .191
1/4-28 4 Plug H2   11920 12 .2268 2-1/2 1 .255 5/16 .191
1/4-28 4 Plug H3   11923 12 .2268 2-1/2 1 .255 5/16 .191
1/4-28 4 Plug H3 33 15130 12 .2268 2-1/2 1 .255 5/16 .191
1/4-28 4 Plug H3 52 15131 12 .2268 2-1/2 1 .255 5/16 .191
1/4-28 4 Plug H3 TiN 15706 12 .2268 2-1/2 1 .255 5/16 .191
1/4-28 4 Plug H4   11932 12 .2268 2-1/2 1 .255 5/16 .191
1/4-28 4 Bot H1   11914 12 .2268 2-1/2 1 .255 5/16 .191
1/4-28 4 Bot H2   11921 12 .2268 2-1/2 1 .255 5/16 .191
1/4-28 4 Bot H3   11925 12 .2268 2-1/2 1 .255 5/16 .191
1/4-28 4 Bot H3 33 15132 12 .2268 2-1/2 1 .255 5/16 .191
1/4-28 4 Bot H3 TiN 15707 12 .2268 2-1/2 1 .255 5/16 .191
1/4-28 4 Bot H4   11933 12 .2268 2-1/2 1 .255 5/16 .191
1/4-28 4 Set H3   11930 1 .2268 2-1/2 1 .255 5/16 .191
Go to the top of this page.
Tap Size
& TPI
No. of Flutes Cham 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 4 Taper H3   12025 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 4 Plug H1   12012 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 4 Plug H2   12020 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 4 Plug H3   12030 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 4 Plug H3 33 14692 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 4 Plug H3 52 15143 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 4 Plug H3 TiN 15708 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 4 Plug H5   12034 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 4 Bot H1   12013 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 4 Bot H2   12021 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 4 Bot H3   12031 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 4 Bot H3 33 14693 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 4 Bot H3 52 15144 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 4 Bot H3 55 15145 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 4 Bot H3 TiN 15709 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 4 Bot H5   12035 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 4 Bot H5 52 15146 12 .2764 2-23/32 1-1/8 .318 3/8 .238
5/16-18 4 Set H2   12032 1 .2764 2-23/32 1-1/8 .318 3/8 .238
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Tap Size
& TPI
No. of Flutes Cham 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 4 Taper H3   12123 12 .2854 2-23/32 1-1/8 .318 3/8 .238
5/16-24 4 Plug H1   12114 12 .2854 2-23/32 1-1/8 .318 3/8 .238
5/16-24 4 Plug H2   12121 12 .2854 2-23/32 1-1/8 .318 3/8 .238
5/16-24 4 Plug H3   12124 12 .2854 2-23/32 1-1/8 .318 3/8 .238
5/16-24 4 Plug H3 33 15150 12 .2854 2-23/32 1-1/8 .318 3/8 .238
5/16-24 4 Plug H3 TiN 15710 12 .2854 2-23/32 1-1/8 .318 3/8 .238
5/16-24 4 Plug H4   12134 12 .2854 2-23/32 1-1/8 .318 3/8 .238
5/16-24 4 Bot H1   12115 12 .2854 2-23/32 1-1/8 .318 3/8 .238
5/16-24 4 Bot H2   12122 12 .2854 2-23/32 1-1/8 .318 3/8 .238
5/16-24 4 Bot H3   12125 12 .2854 2-23/32 1-1/8 .318 3/8 .238
5/16-24 4 Bot H3 52 15151 12 .2854 2-23/32 1-1/8 .318 3/8 .238
5/16-24 4 Bot H3 TiN 15711 12 .2854 2-23/32 1-1/8 .318 3/8 .238
5/16-24 4 Bot H4   12135 12 .2854 2-23/32 1-1/8 .318 3/8 .238
5/16-24 4 Bot H4 33 15152 12 .2854 2-23/32 1-1/8 .318 3/8 .238
5/16-24 4 Set H3   12132 1 .2854 2-23/32 1-1/8 .318 3/8 .238
Go to the top of this page.
Tap Size
& TPI
No. of Flutes Cham 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 4 Taper H2   12215 12 .3344 2-15/16 1-1/4 .381 7/16 .286
3/8-16 4 Taper H3   12222 12 .3344 2-15/16 1-1/4 .381 7/16 .286
3/8-16 4 Plug H1   12213 12 .3344 2-15/16 1-1/4 .381 7/16 .286
3/8-16 4 Plug H2   12220 12 .3344 2-15/16 1-1/4 .381 7/16 .286
3/8-16 4 Plug H3   12223 12 .3344 2-15/16 1-1/4 .381 7/16 .286
3/8-16 4 Plug H3 33 14764 12 .3344 2-15/16 1-1/4 .381 7/16 .286
3/8-16 4 Plug H3 55 15048 12 .3344 2-15/16 1-1/4 .381 7/16 .286
3/8-16 4 Plug H3 TiN 15712 12 .3344 2-15/16 1-1/4 .381 7/16 .286
3/8-16 4 Plug H5   12233 12 .3344 2-15/16 1-1/4 .381 7/16 .286
3/8-16 4 Bot H1   12214 12 .3344 2-15/16 1-1/4 .381 7/16 .286
3/8-16 4 Bot H2   12221 12 .3344 2-15/16 1-1/4 .381 7/16 .286
3/8-16 4 Bot H3   12224 12 .3344 2-15/16 1-1/4 .381 7/16 .286
3/8-16 4 Bot H3 33 14765 12 .3344 2-15/16 1-1/4 .381 7/16 .286
3/8-16 4 Bot H3 52 15049 12 .3344 2-15/16 1-1/4 .381 7/16 .286
3/8-16 4 Bot H3 55 15050 12 .3344 2-15/16 1-1/4 .381 7/16 .286
3/8-16 4 Bot H3 TiN 15713 12 .3344 2-15/16 1-1/4 .381 7/16 .286
3/8-16 4 Bot H5   12234 12 .3344 2-15/16 1-1/4 .381 7/16 .286
3/8-16 4 Bot H5 55 15051 12 .3344 2-15/16 1-1/4 .381 7/16 .286
3/8-16 4 Set H2   12219 12 .3344 2-15/16 1-1/4 .381 7/16 .286
3/8-16 4 Set H3   12231 1 .3344 2-15/16 1-1/4 .381 7/16 .286
Go to the top of this page.
Tap Size
& TPI
No. of Flutes Cham 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
3/8-24 4 Taper H3   12321 12 .3479 2-15/16 1-1/4 .381 7/16 .286
3/8-24 4 Taper H3 33 15055 12 .3479 2-15/16 1-1/4 .381 7/16 .286
3/8-24 4 Plug H1   12312 12 .3479 2-15/16 1-1/4 .381 7/16 .286
3/8-24 4 Plug H2   12315 12 .3479 2-15/16 1-1/4 .381 7/16 .286
3/8-24 4 Plug H3   12322 12 .3479 2-15/16 1-1/4 .381 7/16 .286
3/8-24 4 Plug H3 33 15056 12 .3479 2-15/16 1-1/4 .381 7/16 .286
3/8-24 4 Plug H3 TiN 15714 12 .3479 2-15/16 1-1/4 .381 7/16 .286
3/8-24 4 Plug H4   12331 12 .3479 2-15/16 1-1/4 .381 7/16 .286
3/8-24 4 Bot H1   12313 12 .3479 2-15/16 1-1/4 .381 7/16 .286
3/8-24 4 Bot H2   12320 12 .3479 2-15/16 1-1/4 .381 7/16 .286
3/8-24 4 Bot H3   12325 12 .3479 2-15/16 1-1/4 .381 7/16 .286
3/8-24 4 Bot H3 33 15057 12 .3479 2-15/16 1-1/4 .381 7/16 .286
3/8-24 4 Bot H3 52 15058 12 .3479 2-15/16 1-1/4 .381 7/16 .286
3/8-24 4 Bot H3 TiN 15716 12 .3479 2-15/16 1-1/4 .381 7/16 .286
3/8-24 4 Bot H4   12332 12 .3479 2-15/16 1-1/4 .381 7/16 .286
3/8-24 4 Set H3   12324 1 .3479 2-15/16 1-1/4 .381 7/16 .286
Go to the top of this page.
Tap Size
& TPI
No. of Flutes Cham 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 4 Taper H3   12413 12 .3911 3-5/32 1-7/16 .323 13/32 .242
7/16-14 4 Plug H1   12404 12 .3911 3-5/32 1-7/16 .323 13/32 .242
7/16-14 4 Plug H2   12411 12 .3911 3-5/32 1-7/16 .323 13/32 .242
7/16-14 4 Plug H3   12414 12 .3911 3-5/32 1-7/16 .323 13/32 .242
7/16-14 4 Plug H3 33 14825 12 .3911 3-5/32 1-7/16 .323 13/32 .242
7/16-14 4 Plug H3 TiN 15717 12 .3911 3-5/32 1-7/16 .323 13/32 .242
7/16-14 4 Plug H5   12423 12 .3911 3-5/32 1-7/16 .323 13/32 .242
7/16-14 4 Bot H1   12405 12 .3911 3-5/32 1-7/16 .323 13/32 .242
7/16-14 4 Bot H2   12412 12 .3911 3-5/32 1-7/16 .323 13/32 .242
7/16-14 4 Bot H3   12415 12 .3911 3-5/32 1-7/16 .323 13/32 .242
7/16-14 4 Bot H3 33 14826 12 .3911 3-5/32 1-7/16 .323 13/32 .242
7/16-14 4 Bot H3 52 15156 12 .3911 3-5/32 1-7/16 .323 13/32 .242
7/16-14 4 Bot H3 TiN 15718 12 .3911 3-5/32 1-7/16 .323 13/32 .242
7/16-14 4 Bot H5   12424 12 .3911 3-5/32 1-7/16 .323 13/32 .242
7/16-14 4 Bot H5 52 15157 12 .3911 3-5/32 1-7/16 .323 13/32 .242
7/16-14 4 Bot H5 55 15158 12 .3911 3-5/32 1-7/16 .323 13/32 .242
7/16-14 4 Set H3   12421 1 .3911 3-5/32 1-7/16 .323 13/32 .242
Go to the top of this page.
Tap Size
& TPI
No. of Flutes Cham 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
7/16-20 4 Taper H1   12492 12 .4050 3-5/32 1-7/16 .323 13/32 .242
7/16-20 4 Plug H1   12483 12 .4050 3-5/32 1-7/16 .323 13/32 .242
7/16-20 4 Plug H2   12490 12 .4050 3-5/32 1-7/16 .323 13/32 .242
7/16-20 4 Plug H3   12493 12 .4050 3-5/32 1-7/16 .323 13/32 .242
7/16-20 4 Plug H3 33 15161 12 .4050 3-5/32 1-7/16 .323 13/32 .242
7/16-20 4 Plug H3 TiN 15719 12 .4050 3-5/32 1-7/16 .323 13/32 .242
7/16-20 4 Plug H5   12502 12 .4050 3-5/32 1-7/16 .323 13/32 .242
7/16-20 4 Bot H1   12484 12 .4050 3-5/32 1-7/16 .323 13/32 .242
7/16-20 4 Bot H2   12491 12 .4050 3-5/32 1-7/16 .323 13/32 .242
7/16-20 4 Bot H3   12494 12 .4050 3-5/32 1-7/16 .323 13/32 .242
7/16-20 4 Bot H3 33 15162 12 .4050 3-5/32 1-7/16 .323 13/32 .242
7/16-20 4 Bot H3 TiN 15720 12 .4050 3-5/32 1-7/16 .323 13/32 .242
7/16-20 4 Bot H5   12503 12 .4050 3-5/32 1-7/16 .323 13/32 .242
7/16-20 4 Bot H5 33 15163 12 .4050 3-5/32 1-7/16 .323 13/32 .242
7/16-20 4 Set H3   12500 1 .4050 3-5/32 1-7/16 .323 13/32 .242
Go to the top of this page.
Tap Size
& TPI
No. of Flutes Cham 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 4 Taper H3   12610 12 .4500 3-3/8 1-21/32 .367 7/16 .275
1/2-13 4 Plug H1   12601 12 .4500 3-3/8 1-21/32 .367 7/16 .275
1/2-13 4 Plug H2   12604 12 .4500 3-3/8 1-21/32 .367 7/16 .275
1/2-13 4 Plug H3   12611 12