Certainly not cheap. But a very useful fastener.

If I really wanted to use Grade 8 type materials, I believe I would source the correct Gr8 Socket Head Flat Head Screws and fab the sleeve to the desire length. Wall thickness of the sleeve could be controlled for the desired strength.

4130 solid bar or thick wall tubing would be a good material. Can't imagine that the price per piece wouldn't be cheaper.

Last edited by CMcAllister; 11/29/22 01:39 PM.

If the results don't match the theory, change the theory.