1/4"-28 x 3" Grade 5 Plain Finish Hex Cap Screw / THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 0.750 INCHES NOMINAL FASTENER LENGTH: 3.000 INCHES NOMINAL HEAD STYLE: C1 HEXAGON HEAD HEIGHT: 0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM WIDTH BETWEEN FLATS: 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM END ITEM IDENTIFICATION: MRAP - UNIQUE NSN - USED ON 3 MRAP VARIANTS NOMINAL THREAD DIAMETER: 0.250 INCHES THREAD QUANTITY PER INCH: 28 MATERIAL: STEEL COMP 316 OVERALL THREAD SERIES DESIGNATOR: UNF