1/2-13 x 1-1/2" Grade 8 Shaker Screen Bolt Plain Finish / THREAD CLASS: 2A THREAD DIRECTION: RIGHT-HAND THREAD LENGTH: 1.250 INCHES NOMINAL FASTENER LENGTH: 1.500 INCHES NOMINAL HEAD STYLE: C13 SQUARE HEAD HEIGHT: 0.308 INCHES MINIMUM AND 0.348 INCHES MAXIMUM WIDTH BETWEEN FLATS: 0.725 INCHES MINIMUM AND 0.750 INCHES MAXIMUM END ITEM IDENTIFICATION: 3805-01-533-1853 NECK LENGTH: 0.250 INCHES NOMINAL NOMINAL THREAD DIAMETER: 0.500 INCHES THREAD QUANTITY PER INCH: 13 NECK WIDTH: 0.515 INCHES NOMINAL PART NAME ASSIGNED BY CONTROLLING AGENCY: SHAKER SCREEN BOLT MATERIAL: STEEL OVERALL THREAD SERIES DESIGNATOR: UNC