Wedge Locking Washers and Nuts -- Vibrational Loosening Prevention

Wedge Locking Washers

Sherex’s vibrational loosening prevention products – TEC Series® washers, Disc-Lock® washers and Disc-Lock nuts – feature our proven wedge locking technology. This technology utilizes tension rather than traditionally-used friction to secure fastened joints in high vibration and load applications. Both TEC Series and Disc-Lock wedge locking washers and nuts product lines are used in a variety of different industries, including automotive, construction, solar, wind, energy, oil and gas and general manufacturing industries. The decrease in maintenance costs and in general, the piece of mind of knowing joints will not come loose in high vibration environments provides an early return on investment.

With TEC Series and Disc-Lock product lines, you can torque it, and forget it.

Wedge Locking Washer Technology

How Washers Work

TEC Series and Disc-Lock wedge locking washers are offered in glued pairs; each washer has a cams on one side and radial teeth on the other side. The cam sides are glued together. During installation, the radial teeth cause half of the washer to be seated to the bolt or nut, and half to be seated to the base material.

When the joint is exposed to heavy load or vibration, the bolt or nut will attempt to loosen. Because the TEC Series and Disc-Lock washer’s radial teeth are seated to the base material and the bolt or nut, the loosening movement is forced into the cams between the washer pair.

Because the cam angles are greater than the thread pitch, a wedge effect is created by the cams, preventing the bolt or nut from rotating loose.
Wedge Locking Washer Technology

Locking Nut Technology

Disc-Lock Nuts are two and three piece nuts that utilize the same cam wedge locking technology: when the joint is subjected to heavy shock or vibration, the interlocking cams create a wedge effect because the cam angles are greater than the thread pitch, securing the joint.


Disc-Lock Nut

TEC Series® Wedge Locking Washers

Wedge locking washers, recommended for applications where fasteners and washers may need to be removed and/or reused.


Disc-Lock® Wedge Locking Washers

Wedge locking washers, recommended for applications with permanent joints, where fasteners will NOT need to be removed


Disc-Lock® Wedge Locking Nuts

Wedge locking 2 and 3 piece nuts.