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DRA Qualtech DEWCBRTS1/4 1/4 X 3/32 Pilot Hole HSS Taper Shank Counterbore P13389053DRA-DEWCBRTS1-4 https://cdnimages.opentip.com/full/DRA/DRA-DEWCBRTS1-4.jpg Qualtech DEWCBRTS1/4 1/4 X 3/32 Pilot Hole HSS Taper Shank Counterbore Manufacturer Part Number: dewcbrts1/4Counterboring is the enlargement of a portion of a hole that has previously been formedIf the counterbored portion is shallow (1/8\"\" or less), the operations is usually known as spot-facing; for example, a flat seat for a bolt head or nutIf the hole is enlarged to a considerable depth, it is designated as counterboringSize :1/4\"Overall Length :3-13/16\"Material :High Speed SteelFinish :Uncoated (Bright)Shank Size :1MTDecimal Equivalent :0.25Metric Equivalent :6.35mmShank Type :Taper 13389053 887861129794 1.0000lbs 0.00 0.00 0.00
Qualtech
18.58 2025-07-24 Only 4 left In Stock

Qualtech DEWCBRTS1/4 1/4 X 3/32 Pilot Hole HSS Taper Shank Counterbore

Brand Qualtech
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Product Description

Manufacturer Part Number: dewcbrts1/4

  • Counterboring is the enlargement of a portion of a hole that has previously been formed
  • If the counterbored portion is shallow (1/8"" or less), the operations is usually known as spot-facing; for example, a flat seat for a bolt head or nut
  • If the hole is enlarged to a considerable depth, it is designated as counterboring


  • warning tips WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.

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