Fastener manufacturing method

Details Fastener manufacturing method Fastener manufacturing method

1976-05-14

1977-07-26

Combs, E. M.

10 10P, 72 88, B21H 302, B23G 900, B23K 904

Patent

active

040372812

ABSTRACT:
A method of manufacturing a threaded fastener of the self-tapping type where the fastener thread is impregnated with a harder substance than the metal from which the fastener is made by utilizing a thread-rolling machine with an impregnating electrode. A method of making the fastener pilot tip end impregnated is also described.

REFERENCES:
patent: 2302675 (1942-11-01), Cherry
patent: 3033705 (1962-05-01), Hanink et al.
patent: 3098150 (1963-07-01), Inoue
patent: 3129504 (1964-04-01), Ivan et al.
patent: 3339389 (1967-09-01), Mosow
patent: 3524956 (1970-08-01), Rockun
patent: 3653241 (1972-04-01), Orlomoski

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