AD-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-ringordee-ring.
A D-ring used to secure cargo in a utility trailer(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 weldorfusion weld.
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.[1]
D-rings may be made of plastic for applications such as fixtures for straps for hiking equipment.[2]
Common uses
editA D ring binderA D-ring held by a strap, used to secure cargo in a vehicle
Applications of D-rings include:
For light loading applications such as clothing and luggage, D-rings made of plastics such as nylon may be used, as they weigh less and are impervious to rusting.
At the end of a tow-rope or chain, to allow the creation a bow around an item or part of an item that is being towed.
With a chain to tether a boat to a dockortree when it is being moored.
Intheatres, commonly used where a piece of scenery has to be lifted or "flown". D-rings are attached to the tops or bottoms of flats with a "drift line" and turnbuckle attached to adjust the "trim".
A D-ring on an M16 or variant type rifle is used to increase the pressure on the extractor and reduce malfunctions. This D-ring is a rubber grommet shaped like a "D" and fits over the extractor spring adding tension to it.
As part of BDSM restraints, clothing, or furniture, to act as an attachment point for rope or chain
For hanging a framed picture, D-rings attached to a small metal plate with a hole in it are used: the D-ring is attached to the frame with a screw through the hole, and the wire to hang the picture passes through the D-ring.[8]
Two adjacent D-rings can be used as an adjustable fastener for a strap in clothing such as overalls .[9]
^KERNS, NANCY (May 2024). "Dog-Walking Waist Belts: A waist belt can be used to secure your dog's leash to you for hands-free walking". Whole Dog Journal. 27 (5): 14–16. ISSN1097-5322.
