1/2"-13 Steel Carriage Bolt, Grade 5, 8 inL, Plain Finish, 10 PK/ FASTENER LENGTH: 8.00 INCHES NOMINAL HEAD DIAMETER: 1.094 INCHES NOMINAL HEAD HEIGHT: 0.27 INCHES NOMINAL HEAD STYLE: OVAL NECK WIDTH: 0.515 INCHES NOMINAL NECK LENGTH: 0.281 INCHES NOMINAL NOMINAL THREAD DIAMETER: 0.50 INCHES PART NAME ASSIGNED BY CONTROLLING AGENCY: CARRIAGE BOLT MATERIAL: STEEL OVERALL MINIMUM TENSILE STRENGTH: 120000 POUNDS PER SQUARE INCH SPECIAL FEATURES: FOR USE WITH GRADE 5 HEX NUT, DRILL SIZE 33/64 INCH THREAD LENGTH: 7.719 INCHES NOMINAL THREAD SERIES DESIGNATOR: UNC THREAD QUANTITY PER INCH: 13 THREAD DIRECTION: RIGHT-HAND