shakeproof washer

Use M4/5 hardware to secure boom sections and remember shakeproof washers!

In the 1930's E. C. Crowther was a representative for a company that sold both shakeproof washers and screws.

The main beams are bolted through the 10mm top plate of the rolled hollow section columns using No. M 16 high tensile nuts, bolts and shakeproof washers.

Plate Springs, Conical, Wave & Shakeproof Washers A complete range of washers for load bearing or locking applications.