HSS Capscrew Counterbores

HSS Capscrew Counterbores

Atlas Cutting Tools stocks USA precision Capscrew Counterbores. Buy with confidence and at competitive prices along with same day shipping.

Our HSS (High Speed Steel) Cap Screw Counterbores cut a flat-bottomed cylindrical recess so a socket head cap screw can sit flush with or below the surface of a part. A built-in pilot runs in the existing hole to hold the tool on center. This is a counterbore, not a countersink: a countersink cuts a cone for a flat-head screw, while a counterbore cuts a flat seat for a socket or hex head.

Atlas HSS Capscrew Counterbores

HSS Capscrew Counterbores

  • 45° Chamfer Angle
  • Made In the USA
  • HSS Counterbore
  • Unique style allowing capscrews to sit flush with the surface of a part
  • Built in pilot to maintain alignment in existing hole

Have a question or need help?

Call Customer Service at 908-98-ATLAS or email: Sales@atlascuttingtools.com
  • Compare SKU Vendor Size (D1) Decimal Equivalent (D1) Flute Diameter (D1) Shank Diameter (D2) Pilot Length (L2) Pilot Diameter (D3) Flute Length (L2) Overall Length (L1) Total Reach (L3) Axial Chamfer Morse Taper Small Diameter Large Diameter Body Length (L3) Size of Square Hex Shank Diameter Number of Flutes Coating In Stock Price Quantity
    A53641 ACT 5/8 0.6250 0.943 5/8 .6250 7-5/8 1-1/2 Uncoated 15
    $122.13
  • A53655 ACT 5/8 0.6250 0.959 5/8 .6400 7-5/8 1-1/2 Uncoated 15
    $128.19
  • A53669 ACT 5/8 0.6250 0.975 5/8 .6560 7-5/8 1-1/2 Uncoated 20
    $122.09
  • A53642 ACT 3/4 0.7500 1.131 3/4 .7500 7-3/8 1-5/8 Uncoated 20
    $141.22
  • A53670 ACT 3/4 0.7500 1.163 3/4 .7810 7-3/4 1-5/8 Uncoated 16
    $140.93
  • A53643 ACT 7/8 0.8750 1.32 7/8 .8750 8 1-7/8 Uncoated 2
    $123.78
  • A53657 ACT 7/8 0.8750 1.336 7/8 .8910 8 1-7/8 Uncoated 6
    $129.92
  • A53671 ACT 7/8 0.8750 1.352 7/8 .9060 8 1-7/8 Uncoated 8
    $123.53
  • Total: items /

Adding your products to cart

View Cart Continue Shopping