Fastener head with stabilizing ring

Details Fastener head with stabilizing ring Fastener head with stabilizing ring

1987-05-08

1988-07-26

Wilson, Neill R.

Expanded, threaded, driven, headed, tool-deformed, or locked-thr

Headed fastener element with nut, washer, securing means or cap

Cap over the head

411402, 10 86C, F16B 1900, F16B 3300, A47G 300

Patent

active

047596724

ABSTRACT:
A fastener head, preferably a capped fastener head, including a sloping flange surrounding a central wrenching portion, having wrenching surfaces, such as axial hexagonal surfaces.
A rib disposed on the sloping flange provides stability to a fastener head having such a rib by increasing the overturning moment required to buckle a column comprised of a fastener and driver. The rib is continuous around the flange and is as high as the bottom of the wrenching surfaces to reduce wobble during driving of the fastener head.

REFERENCES:
patent: 1229911 (1917-06-01), Dodds
patent: 3656396 (1972-04-01), Gutshall
patent: 4310272 (1982-01-01), Rich et al.
patent: 4460300 (1984-07-01), Bettini et al.
patent: 4669937 (1987-06-01), Feldman

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