Blind fastener

Details Blind fastener Blind fastener

1987-02-10

1989-10-31

Wilson, Neill R.

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

Having separate expander means

Frangible member

411 34, 411 55, F16B 1304

Patent

active

048773638

ABSTRACT:
A blind fastener having an internally threaded sleeve with a head at one end and a taper at the other. A mandrel is threaded into and through the sleeve, and has a head that bears against a collar which it pushes onto the tapered end of the sleeve. A nut is threaded onto the mandrel to be turned against the head of the sleeve. In turn, the nut is restrained against rotation by a torque tool, and the mandrel is engaged by the tool to turn them counter-rotatively to set the fastener. The nut has a face that faces toward the head of the sleeve that is adapted to make at least a partially conforming engagement with recesses in the head of the sleeve.

REFERENCES:
patent: 4752169 (1988-06-01), Pratt
patent: 4772167 (1988-09-01), Beals

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