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Specify nickel plated screws by coating process, appearance, thickness, corrosion, electrical contact, thread fit and hydrogen-risk controls.

Understand zinc plating versus hot-dip galvanizing for fasteners: corrosion, thread fit, standards and sourcing checks.

Compare carbon and alloy steel fasteners by finished strength, heat treatment, standards, corrosion and total delivered cost.

Compare brass and stainless screws for electrical assemblies by current path, corrosion exposure, joint design and buyer specification.

Define full-form thread length, runout and relief on a custom screw drawing, and check the mating joint before approving a fastener.

Choose 304 or 316 stainless screws by chloride exposure, joint design, specification and verified supplier documentation.