D-ring

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A D-ring is an item of hardware, usually a tie-down metal ring shaped like a capital letter 'D' used primarily as a lashing or attachment point. The term is found interchangeably spelled in different forms, such as: D ring, D-ring or dee-ring. A D-ring may be used at the end of a leather or fabric strap, or may be secured to a surface with a metal or fabric strap; though there are D-rings with a middle body designed to be welded to steel. Ideally, a D-ring swings freely after it has been secured. D-rings may vary in composition, geometry, weight, finish and load (rated) capacity. Though there are differences, a weld-on pivoting link is commonly called a D-ring. To minimize obstruction when the D-ring is not in use, recessed tie-down rings are designed that accommodate the D-ring so it is flush to the surface. There are some non-recessed designs that have an adhesive base. Work load limits are specified where appropriate. For D-rings used in the bed of a truck to secure loads, regular preventative maintenance is important to avoid costly repairs. D-rings may be made of plastic for applications such as fixtures for straps for hiking equipment.