M4 x 40mm A2 Stainless Steel DIN 94 Cotter Pin / DIAMETER: 3.5 MILLIMETERS MINIMUM AND 3.7 MILLIMETERS MAXIMUM UNDERLOOP LENGTH: 40.0 MILLIMETERS NOMINAL END ITEM IDENTIFICATION: 01-607-9674 POINT TYPE: STANDARD OR EXTENDED PRONG CHISEL MATERIAL: STEEL CORROSION RESISTING OVERALL SURFACE TREATMENT: PASSIVATE OVERALL SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL STYLE DESIGNATOR: A1 STANDARD