I’ve heard of an alternative to loctite in threadlocking applications…what is it?



Exceptional Value

Cam locking washers offer a safe bolt locking system that does not rely on traditional techniques to secure the fastener. This system utilises tension instead of friction to secure bolted joints. The proven wedge-locking method, meeting DIN 25201, is superior to any traditional method.

The cam locking bolt securing system incorporates a pair of washers that have cam faces on one side with a cam angle “a” greater than the thread angle “B”. In addition, there are radial teeth on the opposite side. The pre-assembled washers are installed in pairs, cam face to cam face.

When the bolt and/or nut is tightened the teeth of the cam lock washers grip and lock the mating surfaces allowing movement only across the cam faces. Any rotation of the bolt/nut is blocked by the wedge effect of the cams.  See them in action here


Prevents loosening caused by vibration and dynamic loads
Ease of assembly and disassembly
Locking function not affected by lubrication
No special tools required
Controllable preload
Same temperature characteristics as bolt/nut of corresponding quality

Significant Range and Variety

Steel, zinc flake coated with Delta Protekt M3 – M130
Stainless steel (A4), M3 – M80
Special alloys for high temperatures or highly corrosive environments (upon request)

Assembly Examples

Cam-locking washers can be used with standard and high grade bolts and are available with enlarged outer diameter for use on slotted holes, soft materials or painted surfaces.

Cam-locking washers for tapped holes

Cam-locking washers are sized for counter-bored holes.
Through holes require two pairs of cam-locking washers.
For stud bolts cam-locking washers lock the nut, and eliminate the need for adhesives.
Cam-locking washers must not be used on washers that are not captivated in place.


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