5/16-18 X 3/4 Ultra-Low Head Socket Screw 316 SS USA - AMPG - Shoulder Screws, Shoulder Bolts, Sex Bolts, Flat Washers, Machine Screws and other fasteners
Suburban Bolt And Supply Grade 2, 5/16"-18 Hex Head Cap Screw, Zinc Plated Steel, 6 in L A0010200600TZ | Zoro
5/16"-18 x 3" Hex Head Tap Bolt Cap Screw, Stainless Steel 18-8, Fully – Bridge Fasteners
5/16"-18 x 1-3/4" Steel Flat Head Socket Cap Screw Lot Of 120 | eBay