Self-sealing threaded fastener

Details Self-sealing threaded fastener Self-sealing threaded fastener

F - Mech Eng,Light,Heat,Weapons

16

B

85/11

F16B 37/16 (2006.01) F16B 35/04 (2006.01) F16B 43/00 (2006.01)

Patent

CA 1171701

ABSTRACT There is provided a self-sealing threaded assembly which includes a threaded fastener and a resilient washer. The threaded fastener has a head with hexagonal faces or other means by which torque can be applied to the head. An undersurface is provided by the head, and a shoulder portion extends downwardly beneath this under- surface, the shoulder portion having a smaller diameter than the undersurface. A threaded shank extends downwardly from the shoulder portion, the shank being sized diametrally such that an opening engageable by the threaded shank is too small to accept the shoulder portion. The resilient washer has a maximum thickness greater than the axial dimension of the shoulder portion, so that when the threaded shank is screwed into an opening in a wall, the shoulder portion will abut the wall and cause the resilient washer to be squeezed between the wall and the undersurface.

396482

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