🔩 Stainless Steel Flange Bolts – Metric Sizes
Stainless steel flange bolts (metric) are hex-head bolts with an integrated washer flange under the head, used for even load distribution and secure fastening in piping systems, machinery, and structural assemblies - especially where corrosion resistance is essential.
📐 Metric Flange Bolt Specifications
Thread Types:
Metric coarse (M) and metric fine (MF)
Common Sizes:
M5, M6, M8, M10, M12, M16, M20, M24, M30, M36
Lengths from 10mm to 200mm or custom
Standards:
ISO 1665 – Hex flange bolts
DIN 6921 – Hex flange bolts with serrated or plain flange
JIS B1189 – Japanese standard flange bolts
Optional: ISO 4014/4017 equivalents with flanged heads
Material Grades:
A2-70 (304 stainless steel) – general corrosion resistance
A4-70 / A4-80 (316 stainless steel) – enhanced resistance in marine, chemical, and high-salinity environments
Surface Finish:
Plain / Passivated
PTFE Coated (optional)
Black Oxide (on request)
✅ SSM Supplies:
SSM manufactures and supplies metric stainless steel flange bolts in:
304, 316, Duplex, and special alloy grades
With or without serrated flange
Bulk packaging and global export ready
🔧 Applications:
Flanged pipe joints (ASME / DIN flanges)
Marine structures, pumps, and valves
Food-grade and clean-room installations
Offshore and chemical environments
