What the thread found

• Black-oxide-coated alloy steel screws offer higher tensile strength and non-reflective finish compared to stainless steel, though surface rust can develop rapidly in salt air.
• Initial corrosion appears superficial but may penetrate the oxide layer and trigger galvanic corrosion on adjacent aluminium components.
• Recommended preventive care in saltwater environments: treat all fasteners with corrosion-inhibiting gun oil (such as Ballistol or ACF-50) before and after each use, and shield electronics separately with weatherproof covering.
• Alternative approach: replace black-oxide fasteners with marine-grade stainless steel or zinc-laminate-coated screws of identical specification; zinc-laminate variants are salt-water tested but lack the black finish.
• Operators reported inconsistent manufacturing quality and variable suppliers over time; some defended the original material choice as fit-for-purpose when properly maintained.

Depends on

• Effectiveness depends on climate exposure duration and salt-spray intensity.
• Fastener replacement must match original tensile strength and thread specification to avoid mechanical failure.
• Black-oxide protection requires regular re-oiling; stainless or zinc-laminate alternatives require no maintenance but may reflect light on camera.

Gear in this thread

Voltcatalog

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