5/16" x 1" (Effective Length 0.781") Plain Finish Steel Clevis Pin / HEAD STYLE: 17 FLAT CHAMFER DIAMETER: 0.312 INCHES NOMINAL UNDER HEAD LENGTH: 0.940 INCHES NOMINAL END ITEM IDENTIFICATION: TOW TRACTOR, AIRCRAFT FEATURES PROVIDED: COTTER PIN PIN CHAMFER ANGLE: 45.0 DEGREES NOMINAL PIN HEAD DIAMETER: 0.430 INCHES NOMINAL HEIGHT: 0.100 INCHES NOMINAL MATERIAL: STEEL OVERALL SURFACE TREATMENT: OIL OVERALL STYLE DESIGNATOR: L193 STRAIGHT