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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 3/13/2025 4:00:02 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 1/0In Stock
1- 4
$12.990
5-24
$11.691
25+
$11.042
Single Flute Countersink 3/8 In 27820 XL801-3/8X82 EA 3/0In Stock
1- 4
$14.790
5-24
$13.311
25+
$12.572
Single Flute Countersink 1/2 In 27817 XL801-1/2X82 EA 4/0In Stock
1- 4
$18.790
5-24
$16.911
25+
$15.972
Single Flute Countersink 5/8 In 27821 XL801-5/8X82 EA 2/0In Stock
1- 4
$25.990
5-24
$23.391
25+
$22.092
Single Flute Countersink 3/4 In 27819 XL801-3/4X82 EA 1/0In Stock
1- 4
$34.490
5-24
$31.041
25+
$29.317