ASTM A453 Gr 660 heavy hex nuts are steel alloy fasteners used in a variety of applications. They are incredibly strong and durable, making them ideal for use in manufacturing, engineering, and construction projects.

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ASTM A453 Gr 660 Heavy Hex Nuts come in two main types: zinc plated and black oxide. The zinc-plated variety is made from a steel alloy that has been coated with zinc to protect it from corrosion. The black oxide version is made from a steel alloy that has been treated with a chemical solution made up of iron oxide to give it a deep black color. Both types of nuts offer superior strength and durability.

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ASTM A453 Gr 660 Nuts are used in many different industries for various applications such as automotive engines, electrical systems, aviation components, industrial machinery, medical devices, and more. The heavy-duty nature of these fasteners makes them an excellent choice for demanding tasks where the highest level of strength and reliability are required. ASTM A453 Grade 660 Threaded Bars , ASTM A453 Grade 660 Hex Bolts and many more grades are also available.

ASTM A453 Grade 660 Heavy Hex Nuts

ASTM A453 Grade 660 Heavy Hex Nuts

The most obvious benefit of using ASTM A453 Gr 660  Hex Nuts is their strength and durability. These fasteners can withstand extreme temperatures as well as repeated tightening or loosening without becoming damaged or weakened over time. Additionally, they are highly resistant to corrosion due to either their zinc plating or black oxide treatment depending on which type is chosen. They are available in a wide range of sizes so anyone can find the perfect fit for their particular application needs. Different types of products are available, such as Inconel 625 Pipe Fittings, Waspaloy Discs, etc.

There is a need of strong fasteners for high-stress applications or simply want to ensure reliable connections between parts in any manufacturing project are undertaken, ASTM A453 Gr 660 heavy hex nuts have got covered. Their superior strength and durability make them an ideal choice when selecting a fastener for any job requiring reliable performance in tough conditions over extended periods. 

A453 Gr 660 Heavy Hex Nuts

A453 Gr 660 Heavy Hex Nuts are high-temperature resistant nuts made from an alloy of Inconel 660 material. They are known for their excellent heat resistance, corrosion resistance

What are the benefits of A453 Gr 660 Heavy Hex Nuts?

One of the primary benefits of A453 Gr 660 Heavy Hex Nuts is their high-temperature resistance. They can withstand extreme temperatures of up to 700°C without losing their strength & structural integrity

What applications are A453 Gr 660 Heavy Hex Nuts used for?

A453 Gr 660 Heavy Hex Nuts are commonly used in high-temperature applications, including gas turbines, heat exchangers, pressure vessels, and chemical processing equipment

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Class A/B/C/D Grade 660 ASTM A453 Heavy Hex Nut Specification

Standard ASME SA453, ASTM A453 Grade 660 Class A/B/C/D

Dimensions ANSI B18.2.2, DIN 934, ISO 4032, BS1768, BS 1769

Threads Configuration ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads

Size M12-M64

Type Cold Forged, Hot Forged, Bar Stock Machined, Bar Stock Milling

Length 3 mm to 200 mm

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ASTM A453 Grade 660 Heavy Hex Nut Chemical Composition

Element C Mn P S Si Ni Cr Mo Ti Al V B
Grade 660 0.08 max 2.00 max 0.040 max 0.030 max 1.00 max 24.0-27.0 13.5-16.0 1.00-1.50 1.9-2.35 0.35 max 0.10-0.50 0.001-0.010

ASME SA453 Grade 660 Heavy Hex Nuts Mechanical Properties

ASTM A453 Class Tensile, Mpa Yield, Mpa Elong. %, min RA %, min
Grade 660 A, B , C & D 895 min 585 min 15 18

Other Types of ASTM A453 Grade 660 Class A/B/C/D Heavy Hex Nuts

  • ASTM A453 Grade 660 Heavy Hex Nut
  • ASTM A453 Grade 660 Class A Heavy Hex Nut
  • ASTM A453 Grade 660 Class B Heavy Hex Nut
  • ASTM A453 Grade 660 Class C Heavy Hex Nut
  • ASTM A453 Grade 660 Class D Heavy Hex Nut

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