5 Pc - 5/16 Socket Head Cap Screw for: Chevy 10 bolt, 8.8, Dana 30, Dana 35, Dana 44. If you purchased a half Spider and want to replace all the screws on your diff cover. (remember all Spiders and Rock Crushers include all mtg hardware to mt. the unit). Stainless Steel Socket Head Cap Screws. Yeah, there not cheap but they will always look good and never rust. Not for aluminum covers.