초록 ▼

A fastening device (10) including a fastener (20) and a recess insert (12) retained within the head (21) of the fastener (20). The fastener has a head (21) at one end and a threaded shaft (25) at the opposing end. The fastener head (21) has an engagement recess (22) and a concentric counter-bored se

A fastening device (10) including a fastener (20) and a recess insert (12) retained within the head (21) of the fastener (20). The fastener has a head (21) at one end and a threaded shaft (25) at the opposing end. The fastener head (21) has an engagement recess (22) and a concentric counter-bored section (28). The counter-bored section (28) has a greater diameter than the diameter of the engagement recess (22) and extends into the fastener head (21) less than the depth of the engagement recess. The counter-bored section includes an insert retainer (24). The recess insert (12) comprises a different material than the fastener (20). The insert (12) has a fastener retainer (18) and is adapted to fit within the fastener head (21) counter-bored section (28). The insert (12) has a head (13) with an aperture (14) for permitting access to the fastener engagement recess (22) therethrough.

대표청구항 ▼

[ What is claimed is:] [1.]1. A fastening device, comprising:a fastener having a head at one, said head having an engagement recess extending into said fastener head; andan insert comprising a different material than said fastener, said insert having a fastener retainer to secure and fit within said

[ What is claimed is:] [1.]1. A fastening device, comprising:a fastener having a head at one, said head having an engagement recess extending into said fastener head; andan insert comprising a different material than said fastener, said insert having a fastener retainer to secure and fit within said fastener head recess, said insert having a head with an aperture permitting direct engagement with said fastener head engagement recess therethrough for providing rotational force to said fastener; and whereinsaid diameter of said insert head is substantially equal to said diameter of said fastener head.