1 1/2 in Steel Self Drilling Screw with Hex Washer Head Type and Climaseal Finish/ FASTENER LENGTH: 1.5 INCHES NOMINAL HEAD STYLE: C7 HEXAGON EXTENDED WASHER HEAD DIAMETER: 0.3125 INCHES NOMINAL POINT STYLE: F31 SELF-DRILLING NOMINAL THREAD DIAMETER: 12.0 MILLIMETERS MINIMUM TENSILE STRENGTH: 2778 POUNDS PER SQUARE INCH THREAD PITCH IN MILLIMETERS: 1.75 NONMACHINE THREAD STYLE: A18 SELF DRILLING PART NAME ASSIGNED BY CONTROLLING AGENCY: SCREW, SELF-DRILLING 1-1/2" SPECIAL FEATURES: OEM CAGE DOES NOT SELL TO THE GOVERNMENT; WILL ONLY SELL TO DISTRIBUTOR COLOR: SILVER OVERALL SURFACE TREATMENT: ZINC OVERALL