WASHER TYPE FASTENERS

Backup Rivet Washers

Rivet backup washers are used to create a larger install diameter giving the rivet a better hold and more support. Backup washers can help to prevent pull-through of a rivet.
 

Fender Washers

Fender washers are round washers with a small inside diameter hole - also known as Body Washers. Fender washers are used to prevent pull-through and provide a greater bearing surface under the fastener.

Fender Washers - Extra Thick

Fender washers are round washers with a small inside diameter hole. Extra thick fender washers are thicker than standard fender washers and are used to prevent pull-through and provide a greater bearing surface under the fastener.

Flat Washers

Available in different standards from BS 4320, DIN 125 A and B, and DIN 126. Flat washers are used to distribute loads of threaded bolts, screws and nuts evenly as the fastener is tightened.
 

Flat Washers - Extra Thick

Extra thick flat washers thicker than standard flat washers. These washers are round outer diameter thin plates with a center hole punched to the size of the bolt or screw. Flat washers are used to distribute loads of threaded bolts, screws and nuts evenly as the fastener is tightened.

Lock Washers - Split Ring

Split ring lock washers are used to prevent nuts, bolts and screws from vibrating loose. These washers are rings which are split at one point and bent into a helical shape.
 

Lock Washers - High Collar

High collar lock washers are designed to fit under the head of a socket cap screw. Split ring lock washers are used to prevent nuts, bolts and screws from vibrating loose. These washers are rings which are split at one point and bent into a helical shape.
 

Lock Washers - External Tooth

External tooth lock washers are used for locking and tension. Round washers with teeth on the outside, used for maximum holding power. Must be used with fasteners with adequate head diameter.
 

Lock Washers - Internal Tooth

Internal tooth lock washers are used for locking and tension. A round washer with internal teeth, designed to prevent a nut or screw head from loosening with the strut action created by the teeth.

Neoprene EPDM Washers

Round washers that are slightly beveled with a neoprene lining. Often used with sharp point and self-drilling TEK screws to make a watertight seal around the screw or metal roofing or siding.

Structural Washers

Structural washers are thick and strong, built for heavy duty applications such as construction. These washers can be found in steel beams and girder fastener assemblies.
 

Square Washers

Square washers are square in shape and may be flat on both sides or flat on one side and beveled on one side. Often used with square head bolts, square washers prevent pull through and provide a larger surface area and greater hold than standard round flat washers.

Spring Washers

A flat type washer made according to DIN 7980 and DIN 127 B. Used in minimum vibration applications to prevent the fastener from loosening.

Bonded Washers

Bonded Washers are used in the roofing industry as a seal under TEK screws and are available in EPDM and EVA materials. Available in specific hardness ratings.

Rivet Washers

Rivet Washers are typically used when using 3.2, 4.0 or 6.4mm rivets. Creates a larger diameter of pressure during rivet installation.

Belleville Washers / Conical Spring Washers

A Conical Shell which can be statically or dynamically loaded along its axis. Can support very large loads. 
 

Bowed-E Retaining Rings

External Bowed E radially assembled Rotor Clips or retaining rings are designed to be installed into a groove on a shaft. Once snapped into a groove, these clips exert a force or –preload on retained parts, in order to compensate for accumulated tolerances. Externally bowed are radially installed.
 

E-Style Retaining Rings

External E Radially assembled Rotor Clips or retaining rings are the most popular and widely used style of radial retaining ring. They are called “e” rings because of the three prongs on the inside of the shaft which make contact with the bottom of a groove on a shaft to create a shoulder for effective assembly retention.

External Shaft Retaining Rings

Axially installed External Rotor Clips or retaining rings are designed to be installed into a groove or shaft. Once installed in a groove on a shaft, a portion of these retaining rings protrude from the groove in order to create a shoulder to keep an assembly.
 

Internal Housing Retaining Rings

Axially installed Internal Rotor Clips or retaining rings are designed to be installed into a groove on a shaft. Once installed in a bore or housing, a portion of these retaining rings protrude from the groove in order to create a shoulder to keep an assembly.

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