1/4"-20 x 2-1/4" Phillips Drive Round Head Grade 18-8 Stainless Steel Machine Screw / THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 2.250 INCHES NOMINAL FASTENER LENGTH: 2.250 INCHES NOMINAL HEAD STYLE: A28 ROUND HEAD DIAMETER: 0.250 INCHES NOMINAL INTERNAL DRIVE STYLE: B2 CROSS RECESS TYPE II END ITEM IDENTIFICATION: 4120-01-592-7949 NOMINAL THREAD DIAMETER: 0.250 INCHES THREAD QUANTITY PER INCH: 20 SCREW MATERIAL: STEEL CORROSION RESISTING THREAD SERIES DESIGNATOR: UNC