3/8" x 1-1/8" (Effective Length 0.891") Plain Finish Steel Clevis Pin / HEAD STYLE: 17 FLAT CHAMFER DIAMETER: 0.375 INCHES NOMINAL UNDER HEAD LENGTH: 1.125 INCHES NOMINAL END ITEM IDENTIFICATION: TOW TRACTOR, AIRCRAFT PIN HEAD DIAMETER: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM HEIGHT: 0.110 INCHES MINIMUM AND 0.130 INCHES MAXIMUM MATERIAL: STEEL OVERALL SURFACE TREATMENT: OIL OVERALL STYLE DESIGNATOR: L193 STRAIGHT