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Call ZSi-Foster at (800) 323-7053 or order now at zsi-foster.comElectrical Positioning and Support ProductsSpring SteelSuperior Corrosion ResistanceThe ZSi-Foster Silva-Guard finish provides one of the highest levels of corrosion resistance for spring steel fasteners available on the market. ZSi-Foster Silva-Guard coating is extremely consistent providing a finish that combines superior appearance and outstanding protection. This aesthetically pleasing appearance is particularly important for installations in highly visible areas, such as open ceilings.SG Finish is Listed for indoor, outdoor, wet, and dry applications.Innovative Three Step Coating SystemThe ZSi-Foster Silva-Guard finish is a three step coating system that is RoHS, WEEE, and ELV compliant.• The first step is surface preparation involving a process designed to improve the coating adhesion. • The second step is a base coat designed to self-heal from nicks and scratches as well as sacrifice itself instead of the fastener base material. • The third step is a topcoat designed to be an additional protective barrier.The ZSi-Foster Silva-Guard FinishSpring Steel SpecificationsMaterial ASTM DescriptionSpring Steel Cold Roll, ASTM A684 Grade 1055 Spring SteelCarbon Steel ASTM A1011-00 SS GR 33 or ASTM A1011-00CS Type BSpring Steel Finish SpecificationsFinish Finish Code DescriptionZSi-Foster Silva-Guard SGZSi-Foster Silva-Guard coating is a multi-step process that meets the 1000 hour salt spray test per ASTM B117 and DIN 50021.Silva-Guard coating is WEEE, ELV and RoHS compliant. SG Finish is approved for outdoor as well as indoor applications. It is a chrome free duplex coating system that combines an inorganic zinc-rich basecoat with an aluminum-rich organic topcoat.Electroplated Zinc or ElectroGalvanizedEGThis coating is standard for most ZSi-Foster products. Electro-Galvanized products meet ASTM B633 SC1 or SC3, Type III. Electroplating deposits zinc on the surface of the steel by electrolysis from a bath of zinc salts. Pre-galvanized Zinc PGASTM A653 G-90 Pre-galvanized zinc is produced by continuously rolling steel coils or sheets through molten zinc at the mills.