Electronic Assembly Hardware Sems - external, internal, split lockwasher, square cone- steel and stainless CONCORD DIMCO GRAY KEP NUTS SS PHIL PAN INT. & EXT. SEMS-SS PHIL PAN INT. & EXT. SEMS ZIN RIP-TIE SEMS SCREWS (ALL) SHAKEPROOF SLOT PAN INT. & EXT. SEMS SS SLOT PAN INT. & EXT SEMS ZINC