Shoulder Washers

Shoulder Washers

Used to insulate a screw, shaft, rivet or wire from a chassis (panel).
Used as a bushing.
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Fiber 5604
Low cost
Good mechanical properties
Fair electrical insulator (150-250 v/mil)
Not recommended for humid environments
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Kel-F 5609
Very expensive
Good electrical insulator (530 v/mil)
Fair mechanical properties
Relatively high temperature resistance
Extremely low water absorption rate
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Nylon 5607
Good electrical insulator (385 v/mil)
High strength
Good anti -frictional properties
Heat resistant to 300慚
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Phenolic (LE) 5605
Higher fabrication cost than nylon or fibre
Fair electrical insulator (225 v/mil)
Good cold flow resistance
Fair water absorption rate
Relatively hard material surface
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Teflon 5608
Good electrical insulator (480 v/mil)
Excellent chemical and corrosion resistance
High temperature resistance
Very low water absorption rate
Excellent anti-frictional properties

Insulating a screw or solder lug from a chissis.

To bush and insulate a metal tube (sleve) from a plate.

Shoulder washers insulate transistor from screw and chassis.

Seastrom Manufacturing
456 Seastrom Street, Twin Falls, Idaho
Toll Free (800) 634-2356
Fax (208) 734-7222