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Single Flute Countersink (Sizes)
Single Flute Countersink (Sizes)
Please Note: We try very hard to present accurate product images, but product changes occur constantly. All images should be considered approximations. If a particular product feature, color or characteristic is especially important, please call us to verify that information before placing your order. Thank you.
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Single Flute Countersink (Sizes)


  • 82 degree pitch
  • 1/4 In shank
  • For machine countersinking holes of small diameter.
  • Hooked rake angle gives a smooth surface finish in almost all materials.
  • It is suggested that the diameter of the tool chosen be at least 50% larger than the finished diameter required.
  • Not to be used in portable applications.

Stocking Data is current as of 4/30/2025 7:00:03 PM CT

Product SKU Mfr Part # Selling Unit Qty Avail/Qty On-order Price Order
Single Flute Countersink 1/4 In 27818 XL801-1/4X82 EA 0/2Out Of Stock
1- 4
$13.790
5-24
$12.411
25+
$11.722
Single Flute Countersink 3/8 In 27820 XL801-3/8X82 EA 2/0In Stock
1- 4
$15.790
5-24
$14.211
25+
$13.422
Single Flute Countersink 1/2 In 27817 XL801-1/2X82 EA 1/3In Stock
1- 4
$19.990
5-24
$17.991
25+
$16.992
Single Flute Countersink 5/8 In 27821 XL801-5/8X82 EA 2/0In Stock
1- 4
$27.790
5-24
$25.011
25+
$23.622
Single Flute Countersink 3/4 In 27819 XL801-3/4X82 EA 1/0In Stock
1- 4
$36.790
5-24
$33.111
25+
$31.272