#14-14 x 5" Unslotted Indented Hex Washer Head Tek screws w/Bonded Washer, Zinc Plated Features:Pre-assembled Bonded NEO-EPDM metal backed washer creates leak proof seal.Self-Drilling for metal to metal applicationsHex washer head provides excellent driving stabilityPrecision cutting drill point delivers high performance with less physical effort.Low corrosion resistance Details:Bonded Washer: 5/8" O.D.Head Type: Unslotted Indented Hex Washer HeadDrive Size: 3/8"Thread Diameter: #14Threads Per Inch: 14Length: 5"Point: #3 Self-DrillingQuantity: 500 pcsWeight: 27 pounds [approx.] Material Application:Attaches metal to metalDrill Capacity: .060 - .220Drill Speed: 1750 RPM Specifications:ICC-ES Evaluation Report: ESR-3528Meets AST0M C 1513 for cold-formed steel framing connectionsMeets F.I.P.-1000.7 for torsional strength & drill speedMeets SAE J78 for performance & dimensional specificationsMeets ASTM A 510 for carbon steel manufacturingMeets ASTM F1941 for corrosion resistanceBonded washer creates leak proof sealZinc Plated Zinc plated is a plating that is applied electrically to fasteners that prevents oxidation of steel by forming a protective barrier. Not recommended for ACQ Treated Lumber.