Thread forming self-locking screw

Details Thread forming self-locking screw Thread forming self-locking screw

1974-12-23

1976-09-28

Britts, Ramon S.

Brushing, scrubbing, and general cleaning

F16B 3930

Patent

active

039825752

ABSTRACT:
A thread forming and vibration resistant fastener having a shank with at least a portion of its length provided with an external thread. At least a portion of the thread has an irregular surface configuration on both of its flanks in the form of a plurality of serrations. The serrations are shaped as teeth, when viewed along a cylinder concentric with the longitudinal axis of the fastener, with the teeth extending inwardly from adjacent the crest of the thread portion to a termination inwardly of the pitch diameter thereof.

REFERENCES:
patent: 2314274 (1943-03-01), Hallowell
patent: 2691538 (1954-10-01), Clausen
patent: 3186464 (1965-06-01), Baumle
patent: 3339389 (1967-09-01), Mosow
patent: 3426642 (1969-02-01), Phipard
patent: 3481380 (1969-12-01), Breed

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