Dish compensating flush head fastener

Details Dish compensating flush head fastener Dish compensating flush head fastener

1979-07-13

1982-04-13

Britts, Ramon S.

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

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

Deformable securing means

411507, F16B 1905

Patent

active

043245188

ABSTRACT:
A two piece flush type fastener is provided with an improved head structure which includes a raised dish compensating portion on the outer end thereof the height of which is proportioned relative to anticipated peak installation loads, nominal pin diameter and material shear strength such that upon setting of the fastener the head will controllably yield so as to provide a substantially flat head surface on the installed fastener and eliminate the reduction in head strength which may accompany excessive dishing of the head outer surface. The dish compensating raised surface portion on the head also enables formation of a higher tensile strength joint having improved fatigue performance for a given size head.

REFERENCES:
patent: 3680429 (1972-08-01), Briles
patent: 3702087 (1972-11-01), Schmitt
patent: 3748948 (1973-07-01), Schmitt
patent: 3792933 (1974-02-01), Stencel
patent: 3927458 (1975-12-01), Spearman
patent: 3936205 (1976-02-01), Spearman
patent: 4000680 (1977-01-01), Briles
patent: 4086839 (1978-05-01), Briles
patent: 4159666 (1979-07-01), Briles

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