Part No. Finish Size Nut Size Thread Use With Channel Weight Box Qty. P4012 EG 5/8"-11 5/8" - 11 P3300, P4000, P4100 10.00 100 P4023 EG 3/4"-10 3/4" - 10 P3300, P4000, P4100 10.00 100 P4023 SS 3/4"-10 3/4" - 10 P3300, P4000, P4100 11.00 100 Channel Nuts Without Springs & Top Retainer Nuts