Rubber "o" rings on self tapping screws
Hello all. Just got three sets of BAL lock-arm stabilizing bars and looking at the hardware, there is a rubber "o" ring on the self tapping screws, do the rubber rings replace the need for lock washers? How secure is the rubber compared to lock washers? thanks.
2012 Sandstorm 34ft 5th Wheel Toy Hauler 3215
2012 Chevy Silverado 2500HD Duramax Crew Cab 4X4 Long Bed
NASCAR Camping 2014: 8 nights (Fontana & Sonoma)
Indy Camping 2014: 3 nights (Fontana)
Camping KOA's 2014: 27 nights