3/8"-7 x 3-1/2" Grade A Zinc Finish Hex Head Lag Screw / FASTENER LENGTH: 3.500 INCHES NOMINAL HEAD STYLE: C1 HEXAGON END ITEM IDENTIFICATION: 4940-01-445-0086 NONMACHINE THREAD STYLE: A13 GIMLET POINT (TYPE A, AB OR BA) NONMACHINE NOMINAL THREAD DIAMETER: 0.375 INCHES SPECIAL FEATURES: CAGE 05047 AMERICAN SOCIETY OF MECHANICAL ENGINEERS, 2 PARK AVE FL 6 NEW YORK NY 10016-5611; PH. 800-843-2763: CAGE IS A SPECIFICATION AND HOLDS THE DESIGN CONTROL. MATERIAL: STEEL OVERALL SURFACE TREATMENT: ZINC OVERALL