Features



The HARDLOCK® Set Screw is a revolutionary self-locking set screw (hex socket head set screw) which employs the wedge principle to deliver a superior self-locking effect like other HARDLOCK® products without the need to change the conditions of the target application.

Powerful self-locking effect
Just like the HARDLOCK® Nut, no matter the conditions the self-locking effect remains secure.

Reusable
Made of all metal with little few wear surfaces, sustains a powerful self-locking effect.

Easy and efficient
Can be easily installed with just one commercially available tool.

Economical
There are no washers or other self-locking components, and no additional processing is required. Switching to the HLS has the benefit of significant total cost reduction.
Installation

Manually tighten the concave (set) screw.

Use a hex key (Allen wrench) or other general tightening tool to tighten.

Then tighten the convex (lock) screw manually. Make sure that there is a gap of about one pitch between the concave and convex screws before tightening.

Tighten the convex (lock) screw with a general tightening tool to the specified torque or one turn (360 degrees).

The installation is now complete.
Dimension tables
Standard Normal

Standard Hollow

Pin Normal

Pin Hollow

Special/Thin Hollow
