ASTM A 453 GR 660 Class A Fasteners

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ASTM A 453 GR 660 Class A Fasteners Manufacturer and Supplier in Delhi, India

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Punit Fasteners is a well-respected manufacturer and supplier of ASTM A453 Grade 660 Class A Fasteners, proudly based in Delhi, India. We’re dedicated to quality and performance, offering top-notch fasteners designed to endure high-temperature and high-stress environments. You’ll find ASTM A453 GR 660 CL A Fasteners in critical applications like turbines, nuclear reactors, and pressure vessels, thanks to their outstanding mechanical properties and resistance to oxidation. At Punit Fasteners, we strictly follow international standards, delivering reliable, durable, and precisely engineered fastening solutions to industries across India and around the globe.

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Our ASTM A453 Grade 660 Class A Fasteners are crafted from a precipitation-hardened austenitic stainless steel alloy that includes chromium, nickel, molybdenum, and titanium. These fasteners undergo heat treatment to achieve remarkable mechanical properties, boasting a minimum tensile strength of 110 ksi (760 MPa) and a yield strength of 75 ksi (515 MPa). They are designed to resist creep, oxidation, and stress corrosion cracking, particularly in high-temperature settings. Class A fasteners strike a perfect balance between strength and ductility, making them ideal for continuous high-temperature service.

ASTM A 453 GR 660 Class A Fasteners Specifications

Material	Dimensions	Standards	Size	Length
ASTM A453 GR 660 CLASS A Fasteners	ASME B18.2.1, B18.3	ASTM, ASME	M 02 to M 160	3 mm to 200 mm

ASTM A 453 Gr 660 Heavy Hex A Fasteners, Gr 660 Class A Hex Fasteners, Gr 660 Lock A Fasteners, ASTM A453 Self Locking V Fasteners, ASTM A453 Grade 660 Class A Fasteners Stockist in Delhi, India.

ASTM A 453 GR 660 Class A Fasteners Chemical Composition

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

ASTM A 453 GR 660 Class A Fasteners Mechanical Properties

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

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Types of ASTM A 453 GR 660 Class A Fasteners

You’ll find ASTM A453 GR 660 Class A Fasteners commonly used in high-temperature, high-pressure environments like gas turbines, steam turbines, heat exchangers, nuclear power plants, and refinery equipment. They’re perfect for bolted connections in components that face thermal cycling and mechanical stress. With their excellent resistance to oxidation and impressive long-term durability, these fasteners are well-suited for the aerospace, chemical processing, marine, and petrochemical industries. Whether you’re securing flanges, valves, or pressure vessels, you can count on these fasteners to deliver reliable performance and maintain structural integrity even under the toughest operating conditions.