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MUKAU FASTENERS stands out as a top manufacturer and supplier in Kinshasa, Congo, offering top-notch ASTM A453 Grade 660 Class D Nuts, specifically crafted for high-temperature and high-stress environments. These nuts are expertly made from precipitation-hardened austenitic stainless steel, ensuring they deliver remarkable strength, thermal resistance, and protection against corrosion. With a strong commitment to quality control and compliance with international standards, MUKAU FASTENERS promises dependable performance and longevity. You’ll find ASTM A453 GR 660 Class D Nuts widely utilized in industries like power generation, petrochemicals, and aerospace, providing secure fastening solutions that maintain mechanical integrity even in the most extreme conditions.
The ASTM A453 GR 660 Class D Nuts are crafted from a high-performance alloy that includes iron, nickel (24–27%), chromium (13–16%), titanium, and molybdenum. These nuts boast a minimum tensile strength of 965 MPa and a yield strength of around 755 MPa, ensuring they retain excellent toughness and ductility, even at elevated temperatures reaching up to 700°C. Their unique composition guarantees outstanding resistance to oxidation, creep strength, and corrosion protection, making them ideal for critical high-temperature assemblies and pressure applications where mechanical reliability is a must.
Material | Dimensions | Standards | Size | Length |
ASTM A453 GR 660 CLASS D Bolts | 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.
You’ll often find ASTM A453 GR 660 Class D Nuts paired with high-strength stud bolts in steam turbines, gas turbines, pressure vessels, and heat exchangers. They play a crucial role in power plants, petrochemical facilities, and aerospace assemblies, where they face extreme thermal and mechanical stresses. These nuts provide secure fastening in flanged connections, turbine casings, boilers, and reactor assemblies, standing strong against high temperatures, oxidation, and corrosion. Their durability and performance make ASTM A453 GR 660 Class D Nuts the go-to choice for critical applications that demand long-term reliability and safety in harsh conditions.
At Mukau Fasteners, we ensure that the ASTM A 453 GR 660 Class D nuts are installed with the utmost care. Each nut is carefully inspected and individually wrapped to prevent damage during transport. Our packaging includes hard labeled boxes that provide clear product information and quantity information. This careful process assures that the nuts arrive in optimal condition, ready for reliable performance at high temperatures and high pressures
Mukau Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kinshasa, Congo, with over 8 years of experience serving global industries.
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