Washers are disks of metal or non-metallic material placed beneath a nut, an axle bearing, or a joint, to relieve friction, prevents leakage, isolate, prevent loosening or distribute pressure. There are many different types of washers and washer type products for a variety of applications. Common types include flat washers, beveled, C-washers, D-shaped washers, countersunk or finishing washers, fender washers, lock washers, SAE washers, sealing washers, spherical washers, square washers, tab washers, torque washers, shoulder washers, and spring washers. Flat washers are thin, flat, and circular general-purpose washers, with a centrally located hole. Beveled washers have a tapered bearing surface. C-washers have a slot cut from the center to the perimeter. Typically the slot is the same width as the "center hole." D-shape washers have a flat edge cut away on the parameter. Countersunk washers come in a number of shapes: 90 degree countersunk, angle countersunk, flanged, unflanged, rolled flange, etc. Most people are familiar with the finishing type used for cosmetic purposes on many consumer products. Fender washers have a large outside diameter in comparison to the inside diameter. External tooth lockwashers have teeth around the outer perimeter of the washer. Helical spring lockwashers are split rings of metal or steel that when tightened, resist loosening. Internal tooth lockwashers have teeth around the internal perimeter. SAE washers are approved by the Society of Automotive Engineers. Sealing washers seal around a bolt or fastener. Spherical washers have a cross-section in the form of a half or partial sphere. Square washers can have a rectangle shaped inside or outside profile. Tab washers have a tab(s) that may be bent for the purpose of locking. Tab washers are made in an almost infinite variety of configurations with internal and/or external notches and/or tabs, single or multiple, formed or flat. Torque washers have sharp prongs formed to sink into the mating surface. These washers are used for anti-rotation between washer and mating surface. Shoulder washers have a sleeve with the same inner diameter as washer hole. Washers can be specified in ANSI nominal sizes or ANSI metric sizes. Important size dimensions to consider when specifying washers include inside diameter, outside diameter, thickness or working height, and rated or working load. Metallic materials of construction available for washers include aluminum, brass, copper base alloy or bronze, copper, nickel base alloy, spring steel, steel, hardened steel, stainless steel, and titanium. Non-metallic materials of construction include ABS, acetal, asbestos, felt, leather, nylon, polyester, polycarbonate, polyethylene, PVC, polypropylene, PTFE, and rubber. Common finishes for washers include anodize, black oxide, phosphate, galvanized, nickel plated, tin plated, zinc plated, and zinc chromate.
Washers are disks of metal or non-metallic material placed beneath a nut, an axle bearing, or a joint, to relieve friction, prevents leakage, isolate, prevent loosening or distribute pressure. There are many different types of washers and washer type products for a variety of applications. Common types include flat washers, beveled, C-washers, D-shaped washers, countersunk or finishing washers, fender washers, lock washers, SAE washers, sealing washers, spherical washers, square washers, tab washers, torque washers, shoulder washers, and spring washers. Flat washers are thin, flat, and circular general-purpose washers, with a centrally located hole. Beveled washers have a tapered bearing surface. C-washers have a slot cut from the center to the perimeter. Typically the slot is the same width as the "center hole." D-shape washers have a flat edge cut away on the parameter. Countersunk washers come in a number of shapes: 90 degree countersunk, angle countersunk, flanged, unflanged, rolled flange, etc. Most people are familiar with the finishing type used for cosmetic purposes on many consumer products. Fender washers have a large outside diameter in comparison to the inside diameter. External tooth lockwashers have teeth around the outer perimeter of the washer. Helical spring lockwashers are split rings of metal or steel that when tightened, resist loosening. Internal tooth lockwashers have teeth around the internal perimeter. SAE washers are approved by the Society of Automotive Engineers. Sealing washers seal around a bolt or fastener. Spherical washers have a cross-section in the form of a half or partial sphere. Square washers can have a rectangle shaped inside or outside profile. Tab washers have a tab(s) that may be bent for the purpose of locking. Tab washers are made in an almost infinite variety of configurations with internal and/or external notches and/or tabs, single or multiple, formed or flat. Torque washers have sharp prongs formed to sink into the mating surface. These washers are used for anti-rotation between washer and mating surface. Shoulder washers have a sleeve with the same inner diameter as washer hole. Washers can be specified in ANSI nominal sizes or ANSI metric sizes. Important size dimensions to consider when specifying washers include inside diameter, outside diameter, thickness or working height, and rated or working load. Metallic materials of construction available for washers include aluminum, brass, copper base alloy or bronze, copper, nickel base alloy, spring steel, steel, hardened steel, stainless steel, and titanium. Non-metallic materials of construction include ABS, acetal, asbestos, felt, leather, nylon, polyester, polycarbonate, polyethylene, PVC, polypropylene, PTFE, and rubber. Common finishes for washers include anodize, black oxide, phosphate, galvanized, nickel plated, tin plated, zinc plated, and zinc chromate.
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Products & Services Related to Washers
Preload Springs, Spacers and Washers
Preload springs, spacers and washers are used to provide end-play take up or a constant preload for bearings, gears and other mechanical components and assemblies.
Spring Washers
Spring washers are disks of metal that are formed in an irregular shape so that when the washer is loaded it deflects, acts like a spring, and provides a preload between two surfaces.
Wave Washers
Wave washers or wave springs are wavy metal washers designed to provide a compensating spring force and sustain a load or absorb shock.
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Other Topics You Might Be Interested In
Anodizing is a process for finishing aluminum alloys that uses the electrolytic oxidation of the aluminum surface to produce a protective oxide coating. The anodic coating consists of hydrated...
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Spring steel is any of a variety of steels that are normally of the high-carbon or alloy type. They are used in the manufacture of springs because of their high tensile properties. The type of spring...
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Polyester or polyethylene perephthalate refers to members of a large family of synthetic polymers that are composted of at least 85% (by weight) of an ester of a substituted aromatic carboxylic acid.
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Engineering Web: Washers
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Home > Products > Appliances > Clothes Washers. Clothes Washers. Residential Clothes Washers. Commercial Clothes Washers. Compared to a model manufactured before 1994, an ENERGY STAR qualified clothes ...
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Washers
Rib washers (serrated safety washers) combine the significant spring properties of conical spring washers with the increased frictional resistance of tooth lockwashers. They are available in a variety ...
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Top-Rated Clothes Washers
... washers also reduce the energy required for clothes drying. After completing the rinse cycle, these washers spin clothes faster than conventional top-loading washers, so the remaining moisture content ...
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Part Numbers for Washers
| Part # |
Distributor |
Manufacturer |
Product Category |
Description |
| WASHERS |
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ARROW HART
|
Not Provided
|
WASHERS |
| W*SS Series |
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MISUMI USA, Inc.
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Washers
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Standard or precision class washers |
| WSR Series |
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MISUMI USA, Inc.
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Washers
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Countersink depth tolerance ±0.1mm |
| FWTAB Series |
|
MISUMI USA, Inc.
|
Washers
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Free type threaded washers, coarse thread |
| W*S Series |
|
MISUMI USA, Inc.
|
Washers
|
Standard or precision class washers |
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