These special shaped washers
were developed for a broad range of specific applications that require
features not available in conventional washers.
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Centering 5760
Used to center a shaft or bolt in a coil spring or an oversized hole
Various styles are available depending on application
Style 1 — recesses nut or bolt head while flange supports washer on end of hole
Style 2 — Flange supports washer on end of hole
Style 3 — recessed nut or bolt head requires a support to hold it in place, it has no flange
Centers
screw in hole - style depends on whether application requires screw head
to be recessed or the type of hole.
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Available in various styles depending on applications
Provides the same function as a flat washer except used with flat head screws
Can provide sealing functions for flat head screws
This type prevents a screw head from
scoring soft material.
Hole is countersunk. Countersunk
washer and screw are flush with chassis and prevents screw from scoring
soft material.
This type eliminates
countersinking a hole.
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| Finishing 5725 Used with flat head screws Eliminates countersinking of screw holes Provides decorative appearance due to shiny finish Good for attaching fabrics and other light materials, because the washer grips away from the hole |
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| Terminal Cup 5737 Prevents wire from slipping out from under a screw head |
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Available in fibre and steel — fibre insulates and steel conducts Steel has a higher strength
Washer slips onto a shaft or bolt after it has been partially assembled
Used as a retention device on a (grooved) shaft to keep components in place
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Available in fibre and steel — fibre insulates and steel conducts, and steel has a higher strength
Washer twists onto a shaft or bolt after it has been partially assembled to take up any end play
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It has two holes — one to hold the washer to the assembly and the other to attach a chain, wire or cord to assembly
Can act as a guide
Hold a tag.
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Used to retain items on a shaft or retain a shaft in a particular position
These are permanent after assembly
Designed for quick assembly by pushing nut over stud
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Provides a simple means of retaining a loose component inside a bored hole
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Available in various shapes including “D”, square, hexagonal and flattened shaft
Normally used on an odd shaped shaft to prevent the washer from turning relative to the shaft
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| D-shaped washer is used when there is not enough room for a standard washer and also the washer will not rotate. |
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Available in various shapes including “D”, square, rectangular and clipped
Used for limited space applications
Flat sides may be used to prevent washer from rotating
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To prevent a nut or bolt head from loosening by the locking action of the teeth
Internal tooth — abrade the grounding surface in electrical grounding applications to improve connection
Prevents the nut from loosening
on screw.
