F the h washer they r useless lol.I have a pile of them in my parts binGlad to hear it worked out for youKeep in mind...stainless steel is rust resistant ..not rust proofAlso pending the grade ssIm pretty sure weber aint offering 300 series grade ss in their ash sweepsAdd in the corrosive element of charcoal ash with food drippings n heat...the SS sweeps will rust out eventually.Tho they will weather better than the aluminized sweeps.