5picker
Bronze Member
As far as I am aware, there is no such thing as grade 8 lock washers. Bolts are graded by tensile strength, but lock washers are all the same regardless of the grade of bolt application. To me, nothing beats a double nut for locking a nut in place on a thru bolt
I disagree... almost ALL bolt suppliers (Doorman, Fastenal, Home Depot, Lowe's) offer grade 8 lock washers.
Do a google search and you'll find many references to grade 8 lock washers.