SMO 254 Fasteners

Source SMO 254 Fasteners from verified mills, manufacturers and stockists on MetalMitra. Options span standard and custom dimensions, produced to ASTM / ASME SB 479, and every order can ship with an EN 10204 3.1 certificate.

SMO 254 Fasteners are mechanical joining components such as bolts, nuts, studs, screws and washers used to assemble flanges, structures, machinery and equipment.

SMO 254 (UNS S31254) is a 6% molybdenum super-austenitic stainless steel built for chloride-rich service. SMO 254 (UNS S31254) is a high-alloy 6Mo super austenitic stainless steel with high molybdenum and nitrogen, offering excellent resistance to pitting and crevice corrosion in chloride-bearing media.

What you can source

• Bolts — Hex, heavy hex, stud, U, J, T, eye and foundation bolts.
• Nuts — Hex, heavy hex, lock, wing, dome and nylock nuts.
• Studs & Threaded Rods — Fully and partially threaded studs and rods.
• Screws & Washers — Machine screws, socket screws, plain and spring washers.

Key properties

• 6Mo Super Austenitic — High molybdenum and nitrogen content for severe environments.
• Pitting Resistance — Excellent resistance to pitting and crevice corrosion.
• Seawater Service — Suitable for seawater and brackish water systems.
• Good Weldability — Austenitic structure supports reliable fabrication.

Applications & industries

• Seawater Handling
• Desalination Plants
• Pulp & Paper Bleaching
• Chemical Processing
• Offshore Oil & Gas
• Flue Gas Desulphurisation
• Food Processing
• Heat Exchangers
• Marine Engineering
• Pharmaceutical
• Fabrication
• General Engineering

Testing & documentation

Inspection and documentation for SMO 254 Fasteners follow the applicable standard plus any extra requirements in your PO.

• Dimensional & thread inspection
• Visual inspection
• Grade verification against the order
• Chemical composition verification
• Mechanical / proof load testing as applicable
• Hardness testing as applicable
• EN 10204 3.1 Mill Test Certificate
• Project-specific documentation on request

Why source on MetalMitra

• Checked sellers only — Every supplier profile is screened by MetalMitra before it goes live.
• Faster sourcing — Post one requirement and receive competitive offers without chasing calls.
• Paperwork sorted — MTC 3.1, test reports and TPI arranged as your project demands.
• Global logistics — Seaworthy packing and dispatch to project sites across the world.

Request pricing

Post an RFQ for SMO 254 Fasteners with your drawing or specification and receive quotes from verified suppliers.

Technical note: Figures shown are indicative. Final acceptance should be based on the applicable standard, approved drawings and the MTC supplied with the material.