Fastener with recessed head and head insert
AssigneeLockheed Martin Corporation
InventorWilliam S. Grant
Life of this patent
Estimating the term…
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AssigneeLockheed Martin Corporation
InventorWilliam S. Grant
Estimating the term…
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.
A fastening device, comprising:
An insert for a fastener having a head at one end, said fastener head having an engagement recess extending into said fastener head, said insert comprising:
A method of improving the radar signature of a vehicle, comprising the steps of:
Dependencies are inferred from the claim text.