D-ring
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.
D-rings may vary in composition, geometry, weight, finish and load (rated) capacity.
For D-rings used in the bed of a truck to secure loads, regular preventative maintenance is important to avoid costly repairs.
[1] D-rings may be made of plastic for applications such as fixtures for straps for hiking equipment.
(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 .
