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Brian Fasteners, headquartered in Houston, USA, is a reliable maker and exporter of high-strength industrial fasteners with specialization in ASTM A 453 GR 660 Class D Nuts. With an impeccable reputation for quality and reliability, Brian Fasteners serves various industries such as petrochemical, power generation, and aerospace. Our precision-manufactured products are engineered to perform in hostile environments, adhering to severe international standards. By integrating cutting-edge manufacturing techniques with precise quality control, we guarantee outstanding strength, performance, and customer satisfaction, rendering us a go-to partner for clients looking for reliable fastening solutions throughout the United States and abroad.
ASTM A 453 GR 660 Class D Nuts are made with a high concentration of nickel, chromium, iron, and molybdenum, providing remarkable strength and corrosion resistance, particularly in high-temperature applications. These nuts have high tensile strength (min 125 ksi), good elongation (min 14%), and yield strength (min 105 ksi). Their mechanical properties remain stable at temperatures of up to 704°C (1300°F), and they are suitable for heat-resistant applications. The nuts also have good fatigue and stress corrosion cracking resistance, and they will operate continuously under demanding conditions such as turbine engines, exhaust systems, and pressure vessels.
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.
ASTM A 453 GR 660 Class D Nuts find extensive usage in high-temperature and high-stress applications where higher strength and resistance to oxidation are required. Typical uses are for gas turbines, nuclear and fossil fuel power generation plants, heat exchangers, and chemical process equipment. The nuts are also utilized in flanged connections, bolted flange assemblies, and pressure vessels where thermal cycling reliability and corrosive environment are of prime concern. Their high performance at high temperatures also qualifies them to be used in aerospace engines, refinery equipment, and heavy machinery under hostile conditions.
At Brian 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
Brian Fasteners is a leading manufacturer and supplier of high-quality fasteners in Houston , USA, with over 8 years of experience serving global industries.
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