1/4"-20 x 3/4" Slotted Drive Truss Head Grade 18-8 Stainless Steel Machine Screw / THREAD DIRECTION: RIGHT-HAND FASTENER LENGTH: 0.750 INCHES NOMINAL HEAD STYLE: A30 TRUSS NOMINAL THREAD DIAMETER: 0.250 INCHES THREAD QUANTITY PER INCH: 20 SCREW MATERIAL: STEEL CORROSION RESISTING SPECIAL FEATURES: SERRATIONS ON HEAD THREAD SERIES DESIGNATOR: UNC