Stainless Steel Flange Bolts​

🔩 Stainless Steel Flange Bolts – Overview

Stainless steel flange bolts are bolts with a built-in washer-like flange under the head, designed to distribute the load and provide a larger bearing surface. They are widely used in piping, machinery, and flange connections, especially in corrosive or outdoor environments.

📐 Specifications:

Materials:

Stainless Steel 304 / 304L – good corrosion resistance, commonly used

Stainless Steel 316 / 316L – higher corrosion resistance, ideal for marine and chemical environments

Other grades: 310, 321, 410, Duplex 2205, 2507, etc.

Standards:

ASTM A193 / A320 (for high-temp/low-temp)

DIN 6921, ISO 1665

ASME, ANSI, JIS, or customized

Threads:

UNC (coarse), UNF (fine), Metric (M)

Finishes:

Plain, Passivated, PTFE-coated, or Zinc-plated (for mixed environments)

🔧 Applications:

Pipe flanges (ASME B16.5 and B16.47)

Pumps and valves

Pressure vessels and chemical plants

Marine hardware and structural supports

✅ SSM Supplies:

SSM manufactures and supplies stainless steel flange bolts in various materials, sizes, and thread types, supporting global industries with:

Custom length & coating

Full traceability and MTCs

Corrosion-resistant performance

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