Threaded fastener

Details Threaded fastener Threaded fastener

1974-05-17

1976-08-03

Frazier, Roy D.

Brushing, scrubbing, and general cleaning

151 37, F16B 3930

Patent

active

039723615

ABSTRACT:
A vibration resistant fastener such as a screw or bolt provided with a series of serrations on the load bearing flank of the thread of a screw or bolt so that the serrations will bear on the pressure flank of a mating thread. Each serration is formed with an inclined ramp terminating in a substantially vertical buttress with the smoothly inclined surface of the ramp being oriented in the direction of tightening so that the buttress presents a surface tending to act against rotation of the fastener to preclude loosening of the screw or bolt.

REFERENCES:
patent: 3078899 (1963-02-01), MacLean
patent: 3176746 (1965-04-01), Walton
patent: 3339389 (1967-09-01), Mosow

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