Fastener assembly with axially captivated washer

Details Fastener assembly with axially captivated washer Fastener assembly with axially captivated washer

1995-09-12

1997-09-02

Wilson, Neill R.

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

Headed fastener element with nut, washer, securing means or cap

Headed bolt or screw with threads and complementary nut

411353, 411533, 411999, F16B 2118, F16B 3300

Patent

active

056624441

ABSTRACT:
A preassembled fastener assembly having a washer axially captivated on a threaded screw. The washer includes an elongated cylindrical sleeve, a radially outwardly directed flange and at least two inwardly extending detents within the sleeve to yieldably engage a shoulder on the threaded screw to hold the parts together. The detents are provided with elongated flattened inwardly extending surfaces with tapered lead-in surfaces or radiussed portions. When assembled, the screw tip extends substantially outward of the washer sleeve and beyond the grommet. Methods of forming the detents are disclosed.

REFERENCES:
patent: 2255948 (1941-09-01), Swanstrom
patent: 2487129 (1949-11-01), Hallock
patent: 3525108 (1970-08-01), Holton
patent: 5308285 (1994-05-01), Malen et al.
patent: 5338139 (1994-08-01), Swanstrom

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