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Besly
Special Purpose
Fluteless
Spiral Pointed Taps

High Speed Steel
Ground Thread

Short Gash
2 and 3 Gash


Machine Screw Sizes:
4 | 5 | 6 | 8 | 10 | 12


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


Also available...

Popular Specials: Catl No. 4131

Catalog Number: 4131

Besly Special Purpose Spiral Pointed Fluteless Taps

These Besly Special Purpose Taps are for production tapping of thin sections of steel, brass, copper and aluminum. Spiral Points and heavy cross sections provide shearing action and increased rigidity to reduce breakage caused by misalignment.

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
Fluteless
Spiral Pointed
Taps
Catl No. 4131
Machine Screw 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
4-40 2 Plug H2   11000 12 .1177 2 11/16 .141 3/16 .110
5-40 2 Plug H2   11090 12 .1177 2 11/16 .141 3/16 .110
6-32 2 Plug H3   11181 12 .1177 2 11/16 .141 3/16 .110
8-32 2 Plug H3   11304 12 .1437 2-1/8 3/4 .168 1/4 .131
10-24 2 Plug H3   11451 12 .1629 2-3/8 7/8 .194 1/4 .152
10-32 3 Plug H3   11545 12 .1697 2-3/8 7/8 .194 1/4 .152
12-24 3 Plug H3   11635 12 .1889 2-3/8 15/16 .220 9/32 .165
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All dimensions are in inches.
  Besly Special Purpose
Fluteless
Spiral Pointed
Taps
Catl No. 4131
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 H3   11750 12 .2175 2-1/2 1 .255 5/16 .191
5/16-18 2 Plug H3   11953 12 .2764 2-23/32 1-1/8 .318 3/8 .238
3/8-16 3 Plug H3   12162 12 .3344 2-15/16 1-1/4 .381 7/16 .286
1/2-13 3 Plug H3   12550 12 .4500 3-3/8 1-21/32 .367 7/16 .275
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