Flat Washers, Lock Washers and more in different finishes for use in a variety of applications
We offer washers in 18-8 stainless steel, 304 stainless steel, 316 stainless steel, black oxide 18-8 stainless steel, brass, silicon bronze, 410 stainless steel, and neoprene EPDM. Standard Flat Washers, Extra Thick Flat Washers, NAS Washers Small OD, MS Flat Washers Military Standard, AN960C Flat Washers 900 Series, Finishing Cup Washers, Fender Washers, Extra Thick Fender Washers, Split Ring Lock Washers, High Collar Lock Washers, Internal Tooth Lock Washers, Internal Tooth Lock Washers, and Neoprene EPDM Washers.
A flat washer is a round outer diameter thin plate with a center hole (inner diameter) punched to the size of the bolt or screw size. Flat washers are normally used to distribute loads of threaded bolts, screws and nuts evenly as the fastener is tightened. Extra think flat washers are used in decks, docks and large timber projects. NAS Flat washers are used on military applications and ID and OD are tighter in size. 18-8 Stainless steel is corrosion resistant in fresh or rain water.MS - Military Standards. The overriding characteristics of MS fasteners compared to commercial products is the extensive inspection and lot tractability for MS, guaranteeing the chemical, physical and dimensional qualities. While commercial fasteners may look similar and happen to pass many tests given MS products, the commercial fasteners lack the pedigree of guaranteed quality for chemical, physical and dimensional aspects that users who order MS fasteners rely on.
Finishing cup washers are also known as countersunk washers, they are used to provide a finish and smooth look where the head is flush with the top of the finishing cup washer. Fender washers are used to prevent pull-though and provide a greater bearing surface under the fastener. This prevents nuts, bolts or screws from pulling through base material. Split ring medium lock washers are to prevent nuts, bolts and screws from vibrating loose. High Collar lock washers are designed to fit under the head of a socket cap screw. A split washer or a spring lock washer is a ring split at one point and bent into a helical shape. This causes the washer to exert a spring force between the fastener's head and the substrate. Applicable standards are ASME B18.21.1, DIN 127B, and United States Military Standard NASM 35338 (formerly MS 35338 and AN-935). Internal tooth lock washers are for locking and tension, as are external tooth lock washers.
Neoprene EPDM Washers are used with sharp point and self driller TEK sheet metal screws to make a watertight seal around the screw and metal roofing or siding. These are used to fasten metal roofing and metal siding to metal or wood studs or truss systems for a watertight seal on pole barns, metal buildings, sheds and homes. These come in inside diameter #8, #10, #12, #14, 1/4, 5/16, 3/8 and 1/2.