Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Headed fastener element with nut – washer – securing means or cap – Cap over the head
Patent
1991-07-02
1992-03-24
Lindsey, Rodney M.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Headed fastener element with nut, washer, securing means or cap
Cap over the head
411431, F16B 1900
Patent
active
050982397
ABSTRACT:
A cover cap for a hexagonal recess in a screw head with an annular wall engaging in the recess. On the outer side an axial rib is provided, with the diametrical clearance between the outer edge of this rib and the diametrically opposed convex surface line of the outer side of the annular wall being greater than the flank clearance between opposing flank walls of the hexagonal recess.
REFERENCES:
patent: 2551834 (1951-05-01), Ferguson
Lindsey Rodney M.
Schindler Edwin D.
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