The standard head angle (conical bearing surface) of flat and oval head machine screws is 82°; flat heads are also available in 82° undercut and 100° versions. Use a matching (82° or 100°) countersink to create a countersunk recess (a beveled opening) for flat and oval heads. The body diameter of the countersink should be equal to or greater than the head diameter to ensure that a uniform bearing surface is created.
Product Categories : Various Screws > Cross Countersunk Head Machine Screws
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