Products for bench top machinists | LittleMachineShop.com

Countersink Set, Zero-Flute 82 Degree, Set of 5

Countersink Set, Zero-Flute 82 Degree, Set of 5 - Main image
$51.76 $69.95 In stock

Use 82 degree countersinks for deburring and for flat head screws.

Size 0 Cutting Diameter Range 1/16" to 15/64"
Size 1 Cutting Diameter Range 5/32" to 13/32"
Size 2 Cutting Diameter Range 3/16" to 17/32"
Size 3 Cutting Diameter Range 5/16" to 25/32"
Size 4 Cutting Diameter Range 9/16" to 1-3/32"

Sizes 0, 1, and 2 have a 1/4" diameter shank. Sizes 3 and 4 have a 1/2" diameter shank.

These countersinks can be resharpened with a small, mounted grinding wheel in the hole.

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Customer Reviews (4.8 / 5 · 5 reviews)

Evelyn D. ★★★★★

Used these to deburr some aluminum brackets and the zero-flute design really does keep the bit from chattering or grabbing. The set covers a nice spread of sizes, from tiny 1/16" holes up to 17/32", which handled everything I threw at it. Just wish the case had a small label for each bit, but the cu

Ella ★★★★★

The size 1 bit's cutting diameter up to 13/32" let me precisely deburr a tight hole without chatter. These zero-flute countersinks leave a surprisingly clean finish on both aluminum and steel.

Robert E. ★★★★★

I was surprised how smoothly these cut through aluminum, even on the smallest size setting for those tiny screw holes. The zero-flute design really keeps the chips from clogging up the work.