Countersunk head screw

Details Countersunk head screw Countersunk head screw

F - Mech Eng,Light,Heat,Weapons

16

B

F16B 35/06 (2006.01)

Patent

CA 2652672

The invention relates to a countersunk head screw comprising a cylindrical shaft (2) and an essentially conical countersunk head (4) comprising at least two edges (15) on the lower side. Said countersunk head screw is characterised in that the edges each mark an end of a partial surface (10) located on the lower side, each of the partial surfaces lying on a non-concave separate surface of revolution.

L'invention concerne un boulon à tête fraisée qui comprend une tige cylindrique (2) et une tête fraisée (4) sensiblement conique présentant au moins deux arêtes (15) sur sa face inférieure. Ce boulon à tête fraisée se caractérise en ce que les arêtes marquent chacune une extrémité de surfaces partielles (10) situées sur la face inférieure, chacune de ces surfaces partielles se trouvant sur une surface de révolution séparée non concave.

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