#8-18 x 1/2" Phillips Drive Pan Head Zinc Finish Type AB Point Steel Sheet Metal Screw / FASTENER LENGTH: 0.469 INCHES MINIMUM AND 0.531 INCHES MAXIMUM HEAD STYLE: C32 PAN HEAD DIAMETER: 0.306 INCHES MINIMUM AND 0.322 INCHES MAXIMUM HEAD HEIGHT: 0.105 INCHES MINIMUM AND 0.115 INCHES MAXIMUM INTERNAL DRIVE STYLE: D1 CROSS RECESS TYPE 1 FEATURES PROVIDED: CASEHARDENED NONMACHINE THREAD STYLE: A13 GIMLET POINT (TYPE A, AB OR BA) NONMACHINE NOMINAL THREAD DIAMETER: 0.164 INCHES MATERIAL: STEEL COMP 1016 OVERALL OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1022 OR STEEL COMP 1524 OR STEEL COMP 1030 SURFACE TREATMENT: ZINC OVERALL SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM B633 ASSN STD 1ST TREATMENT RESPONSE OVERALL