Countersunk head screw

Details Countersunk head screw Countersunk head screw

F - Mech Eng,Light,Heat,Weapons

16

B

F16B 35/06 (2006.01) F16B 25/00 (2006.01)

Patent

CA 2299115

The invention concerns a countersunk screw with a head (1), a shaft (2) and a thread (3) that extends at least partially over the shaft (2), with the head (1) having a bearing surface (4) that is at least sectionally drawn out towards the shaft (2) in a cone shape. Machined ribs (106) have been set on the lower part (105) of the bearing surface (4), which is proximate to the shaft (2), and prevent the problem that these screws, when they have been wound in completely and especially if they have a voluminous head, cause an undesirable destruction of the material in particular near the surface, such as splintering, tearing or deformation- depending on the material.

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