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

Lock Washers

Historically, ITW Shakeproof Group’s Helical Spring Lock Washers have been among the most widely used anti-loosening components on the market.

The "Split" in the helical spring lock washer absorbs the initial driving torque and visually closes under normal bolt loading. ITW Shakeproof Group's Helical Spring Lock Washers are trapezoidal in shape, which contributes to the further deflection and compression of the washer under load.

Double Coil Extra Duty Heavy Section
Double Coil Lock Washer Extra Duty Lock Washers  Heavy Section Lock Washer 
High-Alloy Hi-Collar Light Washers
High Alloy Lock Washer Hi Collar Lock Washer Light Lock Washer
Metric Series Pre-Assemblies Regular Series
Metric Series Lock Washer Pre-Assemblies Lock Washers Regular Series Lock Washers
Track Washers    
Track Lock Washers Blank Image Blank Image