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Lina Fasteners is a reputable manufacturer and supplier based in Tunis, Tunisia, specializing in high-quality ASTM A453 Grade 660 Class C Nuts that are perfect for high-temperature and high-stress industrial applications. The company adheres to rigorous quality control measures and international standards to guarantee reliable performance and precise dimensional accuracy. Lina Fasteners provides Class C nuts that are engineered for tough service conditions, ensuring exceptional strength, durability, and long-lasting stability. With their technical know-how and consistent supply capabilities, they support critical industries that need trustworthy fastening solutions to withstand severe thermal and mechanical loads.
The ASTM A453 Grade 660 Class C nuts are crafted from a precipitation-hardening iron-nickel-chromium alloy, which contains about 24–27% nickel and 13–16% chromium, along with molybdenum, titanium, aluminum, and controlled carbon. This unique alloy offers outstanding proof and tensile strength, excellent resistance to creep and stress-rupture, and good toughness. Mechanically, Class C nuts maintain their strength and stability even at elevated temperatures, providing strong oxidation resistance and dependable performance under extended thermal and mechanical stress.
Material | Dimensions | Standards | Size | Length |
ASTM A453 GR 660 CLASS C Nuts | ASME B18.2.1, B18.3 | ASTM, ASME | M 02 to M 160 | 3 mm to 200 mm |
|
Element |
Content |
|---|---|
|
Carbon |
0.08 max |
|
Manganese |
2.00 max |
|
Phosphorus, max |
0.040 max |
|
Sulfur, max |
0.030 max |
|
Silicon |
1.00 max |
|
Nickel |
24.0-27.0 |
|
Chromium |
13.5-16.0 |
|
Molybdenum |
1.00-1.50 |
|
Tungsten |
– |
|
Titanium |
1.9-2.35 |
|
Aluminum |
0.35 max |
|
Vanadium |
0.10-0.50 |
|
Boron |
0.001-0.010 |
| Tensile Strength/Ultimate Tensile Stress (UTS) – (Mpa) | 895 min |
| Yield Strength/Proof Stress(0.2% Offset) (YS) – (Mpa) | 585 min |
| Elongation in 4D (El) | 15 |
| Reduction | 18 |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
These ASTM A453 GR 660 Class C Nuts are commonly found in high-temperature, high-pressure service environments. Typical applications include gas and steam turbines, boilers, heat exchangers, and power generation equipment. They are also widely utilized in petrochemical plants, refineries, and chemical processing units where resistance to oxidation, scaling, and thermal fatigue is crucial. These nuts ensure secure fastening, joint integrity, and a long service life in essential industrial operations.
At Lina Fasteners, ASTM A 453 GR 660 Class C Nuts are meticulously packaged to ensure their integrity and quality upon delivery. Each batch of nuts is securely packed in durable, protective materials to prevent damage during transit. Our packaging process includes clear labeling for easy identification and compliance with industry standards. We take pride in our commitment to delivering these critical components in perfect condition, ready for use in demanding applications across various industries.
Lina Fasteners is a leading manufacturer and supplier of high-quality fasteners in Tunis, Tunisia, with over 8 years of experience serving global industries.
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