Self-tapped assembly

Details Self-tapped assembly Self-tapped assembly

1989-08-07

1990-03-06

Combs, E. Michael

Electrical connectors

With supporting means for coupling part

Coupling part or mating part extending into panel opening

439573, H01R 1373

Patent

active

049062069

ABSTRACT:
A tapped hole produced in a metallic material by threading a preselected standard threaded fastener into an untapped hole formed in the material. The diameter of the hole to be formed is determined by using a formula that takes into account the hardness and thickness of the material to be tapped and the basic major diameter and pitch of the preselected threaded fastener to be used to tap the hole. This formula can only be used with threaded fasteners having threads of the Unified Thread Standard type. This formula is particularly useful in tapping a hole formed in a mounting strap of an electrical wiring device.

REFERENCES:
patent: 2752413 (1956-06-01), Junkins
patent: 2788386 (1957-04-01), McCarty
patent: 3144503 (1964-08-01), Fischer

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