Monel K500 (UNS N06600 / W.Nr. 2.4375) is a nickel-copper alloy strengthened by aluminum and titanium, offering exceptional corrosion resistance and mechanical strength. Key equivalent grades include:

superalloy‌ renowned for its exceptional high-temperature strength, oxidation resistance, and corrosion stability‌14.

Inconel 718 (UNS N07718, EN 2.4668, GH4169) is a ‌nickel-chromium-niobium superalloy‌ designed for extreme environments requiring high strength, corrosion resistance, and thermal stability‌12.

Inconel 601 (UNS N06601 / W.Nr. 2.4851) is a nickel-chromium-iron alloy with exceptional high-temperature stability and corrosion resistance. Key specifications include:

Monel 400 nuts (commonly designated as ‌UNS N04400‌) are recognized under multiple international standards:

• ‌4360‌ (DIN/Werkstoff Germany)
• ‌NiCu30Fe‌ (EN designation)
• ‌NW4400‌ (JIS Japan) ‌12.

Inconel 625 nuts (designated as ‌UNS N06625‌) are recognized under multiple international standards:

• ‌4856‌ (DIN/Werkstoff Germany)
• ‌NS3306/NS336‌ (GB/T China)
• ‌NiCr22Mo9Nb‌ (EN designation) ‌17.

‌Hastelloy C22 (UNS N06022, EN 2.4602) is a ‌nickel-chromium-molybdenum-tungsten superalloy‌ renowned for its outstanding corrosion resistance and high-temperature stability‌12.

317L stainless steel nuts are designated under multiple international standards:

• ‌UNS S31703‌ (Unified Numbering System)
• ‌4438‌ (DIN/Werkstoff Germany)
• ‌00Cr19Ni13Mo3‌ (GB/T China) ‌13.

Corrosion Resistance:The addition of copper makes these 904L nuts fasteners highly resistant to sulfuric, phosphoric, and acetic acids.

Non-Magnetic:904L uns n08904 fasteners remains non-magnetic in all conditions, which is essential for certain electronic or medical equipment.

Low Carbon:The “L” in 904L cold forged hex nuts stands for “low carbon” (max 0.02%), which prevents sensitization during welding and protects the bolts from intergranular corrosion.