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Besly Counterbore
Sets

High Speed Steel
Straight Shank

Machine Screw and
Fractional Sizes

Machine Screw Sizes:
Set No. 3 | Set No. 4

Fractional Sizes:
Set No. 1 | Set No. 1-S |
Set No. 5 | Set No. 5-S

Catalog Number: 972

Besly Counterbore Sets

Besly Counterbore sets provide a selection of counterbores for every need in machine shops, tool rooms, prototype laboratories and general industrial use.

Please call 800 435-2965 for current net pricing.

Note: Click the EDP No to check availability.

 
 
  Besly Counterbore Sets
Catl No. 972
Machine Screw
Sizes
   
 
   
Set No. EDP No Pkg Qty Counterbore Catl No. Screw
Size
Pilot Size Cutting Size
No. 3 22528 1 968 2 .085 .155
        3 .098 .176
        4 .111 .198
        5 .124 .220
        6 .137 .241
        8 .163 .285
        10 .189 .328
      12 .215 .372
No. 4 22529 1 971 2 .085 .172
        3 .098 .199
        4 .111 .225
        5 .124 .252
        6 .137 .279
        8 .163 .332
        10 .189 .385
        12 .215 .438
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  Besly Counterbores Sets
Catl No. 972
Fractional
Sizes
   
 
   
Set No. EDP No Pkg Qty Counterbore Catl No. Screw
Size
Pilot Size Cutting Size
No. 1 22519 1 966 1/4 1/4 13/32
        5/16 5/16 15/32
        3/8 3/8 19/32
        1/2 1/2 25/32
      5/8 5/8 29/32
No. 1-S 22526 1 966 1/4 1/4 3/8
        5/16 5/16 7/16
        3/8 3/8 9/16
        1/2 1/2 3/4
      5/8 5/8 7/8
No. 5* 22536 1 966 1/4 1/4 13/33
        5/16 5/16 1/2
        3/8 3/8 19/32
        1/2 1/2 27/32
      5/8 5/8 31/32
No. 5-S* 22537 1 966 1/4 1/4 3/8
        5/16 5/16 15/32
        3/8 3/8 9/16
        1/2 1/2 3/4
        5/8 5/8 15/16
*  For '1960 Series' Socket Head Cap Screws.
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