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Astm A490 Fasteners Manufacturers Suppliers Stockist India

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Astm A490 Fasteners Manufacturers Suppliers Stockist India

Astm A490 Fasteners Manufacturers Suppliers Stockist India

The K.M Steel India stocks a large inventory of fasteners for commercial, industrial, utility, and OEM installations. We have Fasteners such as screws, Astm A490 Fasteners , bolts, nuts, washers, and studs available in several grades and materials. Along with the standard fasteners we also stock B7 bolts & studs and stainless steel, nuts, Astm A490 Fasteners, bolts, and washers. We also carry a large inventory of mechanical anchors such as, drop-ins, wedge anchors, tapcons, lead, plastic, and hollow wall anchors.

K.M Steel India is a full line fastener distributor that stocks a wide variety of products. No matter what the specification, we can find what you're looking for. If it's not on our shelves we will outsource the product to ensure our customers' satisfaction. With K.M Steel India, there is no job to large or small. We cater to any fastener need.

K.M Steel India is a major player in the fastener industry who handles the needs of any customer. For construction, we sell Astm A490 Fasteners to all the fields with a heavy concentration in electrical, mechanical, and steel erection contractors. We have a very large inventory of Astm A490 Fasteners , specialty bolts in all of our warehouses, supplying fields such as fasteners, anchors, channel and strut accessories.

K.M Steel India has established itself as the market leader and is recognised for exceptional service, timely delivery, competitiveness, and total solutions.

we also have our sales representatives to understand the requirements of our clients, we maintain ready stock of Astm A490 Fasteners in Cities like Abu Dhabi, Riyadh, Manama, Muscat, Doha, Dubai, Damascus, Khartoum, Beirut, Jeddah, Aleppo, Alexandria, Algiers, Amman, Mosul, Cairo, Baghdad, Dammam, Casablanca, Basra, Mecca, Tripoli, Rabat, Sana'a, Arbil, Hilla, Port Said, Marrakech, Medina, Al Hudaydah, Omdurman, Damietta, Homs, Kafr Dawar, Benghazi, Fez, Bahri, Nouakchott, Sulaymaniyah, Safi, Zarqa, Oran, Kirkuk, Ismailia, Tunis, Agadir, Tangier, Sharjah, Shibin El Kom, Misratah, Matrah, Aden, Najaf, Karbala, Latakia, Sousse, Meknes, Gaza, Fallujah, Aswan, Kassala, Al-Ubayyid, Sohag, Kuala Lumpur, Penang, Kuching & many more...

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ASTM A490 Fasteners



The ASTM A490 specification covers quenched and tempered, alloy steel, heavy hex structural bolts from 1/2" diameter through 1-1/2" diameter with a minimum 150 ksi tensile. These bolts are intended for use in structural connections and therefore have shorter thread lengths than standard hex bolts. Refer to the Structural Bolts page of our site for thread lengths and other related dimensions. A490 bolts are similar in application and dimensions to A325 heavy hex structural bolts but are made from an alloy steel rather than a medium carbon steel, resulting in a higher strength fastener.

The A490 specification is applicable to heavy hex structural bolts only. For bolts with different thread lengths than specified for structural bolts but with similar mechanical properties, see Specification A354 grade BD.

ASTM A490 bolts shall not be coated by hot-dip galvanizing, mechanical deposition, or electroplating with zinc due to the potential risk of hydrogen embrittlement. ASTM has approved coating A490 bolts with Zinc/Aluminum Corrosion Protective Coatings per ASTM F1136 Grade 3, commercially called dacromet.

Additional testing in the form of Magnetic Particle Inspection for Longitudinal Discontinuities and Transverse Cracks is a requirement of the A490 specification.


 TYPE 1 Medium carbon and alloy steel.
 TYPE 2 Withdrawn in 2002.
 TYPE 3 Weathering steel.
M Metric A490.

Connection Types

SC Slip critical connection.
N Bearing type connection with threads included in the shear plane.
X Bearing type connection with threads excluded from the shear plane.

Mechanical Properties

Size Tensile, ksi Yield, ksi Elong. %, min RA %, min
1/2 - 1-1/2 150-173 130 14 40

Chemical Properties

Type 1 Bolts
Element Sizes 1/2 to 1-3/8 Size 1-1/2
Carbon, max 0.30 - 0.48% 0.35 - 0.53%
Phosphorus, max 0.040% 0.040%
Sulfur, max 0.040% 0.040%
Alloying Elements * *
* Steel, as defined by the American Iron and Steel Institute, shall be considered to be alloy when the maximum range given for the content of alloying elements exceeds one of more of the following limits: Manganese, 1.65%, silicon, 0.60%, copper, 0.60%, or in which a definite range or a minimum quantity of any of the following elements is specified or required within the limits of the recognized field of constructional alloy steels: aluminum, chromium up to 3.99%, cobalt, columbium, molybdenum, nickel, titanium, tungsten, vanadium, zirconium or any other alloying elements added to obtain a desired alloying effect.


Type 3 Bolts
Element Sizes 1/2 to 3/4 Size above 3/4
Carbon 0.20 - 0.53% 0.30 - 0.53%
Manganese, min 0.40% 0.40%
Phosphorus, max 0.035% 0.035%
Sulfur, max 0.040% 0.040%
Copper 0.20 - 0.60% 0.20 - 0.60%
Chromium, min 0.45% 0.45%
Nickel, min 0.20% 0.20%
Molybdenum, min 0.15% 0.15%

Recommended Nuts and Washers

Nuts Washers
Type 1 Type 3 Type 1 Type 3
A563DH A563DH3 F436-1 F436-3

Note: Nuts conforming to A194 Grade 2H are a suitable substitute for use with A490 heavy hex structural bolts. Follow the link for anASTM A563 Nut Compatibility Chart.

Pay Mode Terms: L/C (Letter of Credit), T/T (Bank Transfer)
Port of Dispatch : CST Air Port, Mumbai & Nhava Seva Sea Port
Production Capacity : 500 Metric Tons/Month

For quick Quote For Astm A490 Fasteners, please contact our Sales team.

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