Shark of the Month October 13
Join Date: Nov 2011
Location: Was northern Maine, now gulf coast of Florida
They make lock washers that are specifically for socket cap screws. They're called "high collar" lockwashers. These should be used if you have a choice. All socket products are alloy steel and heat treated, and are very strong. You should always use fastener products that are of similar strength. If you use a common flat or lock washer it's much less strong and it'll likely 'cup' or break at some future point.
Fastener sales have fed my family for the last 35+ years.
“Life should not be a journey to the grave with the intention of arriving safely in a pretty and well-preserved body, but rather to skid in broadside in a cloud of smoke, thoroughly used up, totally worn out, and loudly proclaiming “Wow! What a Ride!” - HST