1/4"-20 x 2-3/4" ASTM F837 Hex Drive Grade 18-8 Stainless Steel Socket Cap Screw / THREAD CLASS: 2A THREAD DIRECTION: RIGHT-HAND FASTENER LENGTH: 2.750 INCHES NOMINAL HEAD STYLE: C49 FLAT CHAMFER HEAD DIAMETER: 0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM HEAD HEIGHT: 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM INTERNAL DRIVE STYLE: D5 HEXAGON END ITEM IDENTIFICATION: LOGISTGICS SUPPORT VESSEL NOMINAL THREAD DIAMETER: 0.250 INCHES WIDTH ACROSS FLATS: 0.188 INCHES NOMINAL THREAD QUANTITY PER INCH: 20 MATERIAL: STEEL CORROSION RESISTING OVERALL THREAD SERIES DESIGNATOR: UNC