Captive fastener
Encyclopedia
Captive fasteners are an engineered class of fastener
designed for a permanent hold (captivation) within a target assembly or housing, including upon servicing. They provide a secure joining, and avoid fastener loss or damage that might be caused by a loose part.
Many captive fasteners use thread locking, press-fitting, or broaching to accomplish their anchor-hold within the larger assembly housing. However, some captive fasteners meld with the material into which they are joined, either through cold forming or welding
.
Fastener
A fastener is a hardware device that mechanically joins or affixes two or more objects together.Fasteners can also be used to close a container such as a bag, a box, or an envelope; or they may involve keeping together the sides of an opening of flexible material, attaching a lid to a container,...
designed for a permanent hold (captivation) within a target assembly or housing, including upon servicing. They provide a secure joining, and avoid fastener loss or damage that might be caused by a loose part.
Many captive fasteners use thread locking, press-fitting, or broaching to accomplish their anchor-hold within the larger assembly housing. However, some captive fasteners meld with the material into which they are joined, either through cold forming or welding
Welding
Welding is a fabrication or sculptural process that joins materials, usually metals or thermoplastics, by causing coalescence. This is often done by melting the workpieces and adding a filler material to form a pool of molten material that cools to become a strong joint, with pressure sometimes...
.