Contact Information

Stampings
2550 S 27th Avenue
Broadview, IL 60155 
920-261-2652 
sales@shakeproof.com

Pins
W6331 Bee Rd 
Watertown, WI 53098 
920-261-2652 
sales@shakeproof.com

Lock Washers
3704 N Palmer Rd 
Milwaukee, WI 53212 
920-261-2652 
sales@shakeproof.com

Threaded
W6331 Bee Rd 
Watertown, WI 53098 
920-261-2652 
sales@shakeproof.com

Double Coil

Double CoilThe Double Coil helical spring lock washer is used in soft joints such as wooden pole assemblies, which are subject to considerable expansion and contraction. The Double Coil provides the travel necessary to maintain effective clamping force in such assemblies. Double Coil helical lock washers are manufactured with an oversized inside dimension.

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