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Countersinks 82° Countersinks

Products35
BrandWeldon
Quick answer

Weldon 82° countersinks for seating flat-head screws, by screw size or in pointless styles that cover a range of hole sizes. A few 90° deburring tools are listed here too.

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Choosing an 82° countersink

An 82° countersink matches the head angle of standard inch flat-head screws, so the screw seats flush in a clean cone. This group is Weldon: countersinks by screw size (5/16" and 1/2" are two examples), pointless countersinks, and a few 90° deburring tools.

Pointless countersinks have no drill point, so they work on a hole you have already drilled. Each covers a range of hole sizes, from small ones like .073 through 15/64" to larger ones like .431 through 7/8". A screw-size countersink is simpler when you run one fastener all day.

Drilling tips

Go slow, with light pressure and cutting oil on steel. Countersink a little, test-fit the screw, and cut more only if you need to. The head should sit flush or just below the surface. If the tool chatters, cut the speed. If you only want to break a sharp edge, the deburring tools are the better choice.

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Matching a known screwCountersinks by screw size Listed by screw size, such as 5/16" and 1/2", so depth and diameter suit the fastener.
Mixed hole sizesPointless countersinks Each covers a range, for example .073 through 15/64" or .431 through 7/8", on holes already drilled.
Burrs and sharp edgesDeburring tools The 60° deburring tools have their own collection. Some 90° deburring tools are listed in this group.See the range →Countersinking tileDiamond countersinks ITM diamond countersinks made for tile, not steel.See the range →

Common questions

What does pointless mean?

A pointless countersink has no drill point. It is made to cut the cone on a hole you have already drilled, and each one covers a range of hole sizes, such as .307 through 25/32".

Will an 82° countersink fit metric screws?

Metric flat-head screws generally have a 90° head, so an 82° cut will not seat them fully. Use an 82° countersink for inch flat-head screws, and check the head angle on anything else.

Why are deburring tools listed here?

Some 90° deburring tools share this group. They break the sharp edge of a drilled hole rather than seat a screw head. The 60° deburring tools have their own collection.

Know-how for Countersinks 82° Countersinks

All guides →
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