ASTM A194 Grade 8M Nuts

ASTM A194 Grade 8M Nuts are high-performance, internally threaded fasteners manufactured for use in severe service conditions involving corrosion, high temperatures, and low temperatures. The ASTM A194 specification governs nuts for these types of applications, and Grade 8M is one of the most important stainless steel grades within this standard, renowned for its superior corrosion resistance.

The primary characteristic of ASTM A194 gr 8M fasteners is their material: they are manufactured from Type 316 stainless steel (UNS S31600). This austenitic stainless steel contains molybdenum, which gives it significantly superior resistance to pitting and crevice corrosion, especially in chloride-rich environments (like saltwater), compared to the standard Grade 8 (Type 304).

These nuts are available in different conditions, typically Class 1 (solution annealed) and Class 2 (strain hardened), which provides higher strength. They are most commonly supplied in a heavy hex pattern, which provides a larger bearing surface and greater strength for critical connections.

“Contact Jade Special Metals today with your requirement for ASTM A194 GR. 8M Nuts. We assure you of the best quote.

Marine & Coastal Applications: The molybdenum content helps to provide excellent resistance to problems caused by chloride from salt water in the form of pitting corrosion and crevice corrosion.
Chemical & Petrochemical Processing: Use in reactors, vessels. Or in piping systems where corrosive acids, chlorides and aggressive chemicals are present.
Pharmaceutical & Food Processing: Hygienic properties and excellent cleanability present in Type 316 stainless steel makes these nuts excellent for sanitary applications.
Wastewater Treatment: Resists corrosion from several chemicals and compounds used at municipal and industrial water treatment facilities.
Cryogenic Service: Still has excellent toughness and mechanical properties within low temperature applications.

• Specialist Manufacturer: We are an established manufacturer of A194 8M Nuts and we control the all-important solution annealing and strain hardening which makes the performance and reliability for your application.
• Certified Quality: Each order is shipped with a Mill Test Certificate (MTC) to confirm compliance with the chemical and mechanical requirements of the ASTM A194 standard.
• Large Inventory: We stock a large inventory of ASTM A194 Gr.8M heavy hex nuts in Class 1 and Class 2 condition for fast delivery.
• Competitive Price: Our direct to market and well managed manufacturing processes allow us to provide to you a competitively priced option while ensuring that you have the certified quality for your application.
• Global Exporter: With well developed logistics, we are able export UNS S31600 fasteners to customers quickly and reliably.