Marine Grade Stainless Steel Bolts Supplier - Marine Hardware

Marine Grade Stainless Steel Bolts are corrosion-resistant fasteners designed for harsh marine environments. They are typically made from 316 stainless steel for superior durability against saltwater and moisture. These bolts are essential for securing marine hardware, ensuring long-lasting performance in boats and coastal structures.

Size: M6 to M48 (or equivalent imperial sizes)

Grade: 316 (A4) stainless steel, 304 (A2) for less corrosive environments

Material: Austenitic stainless steel with high chromium (16-18%) and nickel (10-14%) content, plus molybdenum (2-3%) in 316 grade

Corrosion Resistance: Excellent resistance to saltwater and marine environments

Tensile Strength: 500-700 MPa (varies by grade and size)

Viscosity: Not applicable (solid material)

Buoyancy: Sinks in water (density ~7.9-8.0 g/cm³)

Finish: Passivated or electropolished for enhanced corrosion resistance

Standards: ASTM A193, ASTM A320, DIN 931/933, ISO 3506

Temperature Range: -200°C to +800°C (varies by grade)

Hardness: 70-95 HRB (Rockwell B scale)

Thread Type: Metric coarse/fine or UNC/UNF

Coating: Typically uncoated (bare stainless), but may have PTFE or Xylan for specific applications

Marine Grade Stainless Steel Bolts and Marine Hardware typically comply with maritime standards such as ASTM F593 (for bolts) and ASTM F738 (for stainless steel fasteners), as well as ISO 3506 for corrosion resistance. Always verify specific product certifications with the manufacturer.