Prevailing torque bolt

Details Prevailing torque bolt Prevailing torque bolt

1980-04-02

1982-07-27

Britts, Ramon S.

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

Having structure to restrict rotation of threaded, mating...

Comprising a thread lock

F16B 3930

Patent

active

043414974

ABSTRACT:
A threaded fastener, such as a bolt, has an externally threaded shank with a standard thread portion along its end portion and a modified thread portion adjacent to it, the modified thread portion having a substantially inclined root section enlarged to interfere with and swage the crest of an internal thread in contact with it and having the leading flank adjacent the inclined root backset to provide space for the swaged crest.

REFERENCES:
patent: 2377405 (1945-06-01), Davies
patent: 3196918 (1965-07-01), Hampton
patent: 3247877 (1966-04-01), Evans
patent: 3301299 (1967-01-01), Stanwick
patent: 3342234 (1967-09-01), Evans
patent: 3381733 (1968-05-01), Stanwick
patent: 3721283 (1973-03-01), Evans
patent: 4150702 (1979-04-01), Holmes
patent: 4171012 (1979-10-01), Holmes
"Product Engineering", Apr. 1979, pp. 55-59, Holmes Fastening Systems Brochure.

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