The term “metal fasteners” is very broad, and many types of fasteners fall under this umbrella.
Such fasteners include: snap hooks, spring links, quick links, cargo restraints, cargo hooks, cam buckles, ratchets, carabiners, surplus parachute hardware, d-rings, o-rings, screws, bolts, nuts, key rings, triangles, loops, footman loops, swivel loops, squares, harness loops, slides, web clamps, web buckles, pet buckles, metal side releases, slide adjuster clamps, tent hardware, grommets, belt, bag and holster hardware and military pistol belt and bag hardware.
Common materials from which these fasteners are made include: bronze, zinc, die cast zinc, sheet steel, steel, welded steel wire, welded solid brass, stainless steel, stamped steel and steel wire. Less common materials include aluminum and glass-filled nylons. These fasteners range in capabilities from light-duty to heavy-strength.
Light-duty metal fasteners are good for bags, straps, medical products, military and tactical items, pet collars and leashes, equine items, marine and diving items, firefighter products and tent and awning applications.
Light-duty metal fasteners are frequently plated in nickel, although alternative plating, such as black, polypropylene or military, is often available as well.
Heavy-duty metal fasteners are generally designed for applications like the aforementioned aircraft cargo tie-down and restraints, as well as the same for vehicles. This type of metal fastener includes ratchets and cam buckles. Cam buckles are commonly made of zinc, and often plated in black resin or zinc.
Some have a breaking point of upwards of 750 pounds. Ratchet tie-downs are ideal for securing heavy loads. They range in breaking point, but some reach well above 1000 pounds. They come in many different styles to fit a variety of applications.
A common material used for straps and webbings of heavy-duty metal straps is polyester, which is known for its resilience, resistance to environmental damage and its ability to dry quickly and hold its form. Other variable factors of metal fastener straps include dimension and detail specifics. Variable dimensional specifics include product depth, width and height, strap length and webbing thickness and width.
Detail specifics include: break strength, fastener style, color or pattern, total capacity rating and whether or not the product has hooks and whether or not the product is weather or UV resistant.