A D-ring is an item of hardware, usually a tie-down metal ring shaped like a capital D|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.

[(A) D-ring (shown in isometric view)

(B) Weld-on pivot link; note the incorrect fillet weld call-out (bottom-right). The correct method of securing a weld-on pivot link is a [t weld] which consists of a perpendicular vee butt joint secured to the billet using a butt weld or fusion weld. | upload.wikimedia.org/wikipedia/commons/0/0a/D-Ring%26Weld-on///PivotLink.jpg]

Common uses

Applications of D-rings include: