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Punit Fasteners, based in Delhi, India, is a leading manufacturer and supplier of Carbon Steel Nuts that address the fastening needs of construction, automotive, and industrial sectors. These nuts are favored for being affordable, easy to work with, and providing dependable mechanical strength. Available in different carbon grades (low, medium, and high), Carbon Steel Nuts can come plain or coated (zinc-plated, galvanized) for better corrosion resistance. Made to high standards, they fit both structural and mechanical applications where cost-effective and durable fastening is needed. Punit Fasteners delivers high-quality nuts that perform reliably under load and vibration.
Carbon Steel Nuts are typically made from steel with up to 0.60% carbon, along with small amounts of manganese and silicon. They offer tensile strengths ranging from 400 to 850 MPa, depending on carbon content and whether they have been heat-treated. Higher-carbon grades provide greater strength and wear resistance. While uncoated carbon steel can rust, surface treatments like black oxide or galvanizing improve durability. They provide good load distribution and mechanical reliability in low to medium stress conditions, making them suitable for everyday industrial and structural fastening tasks.
| Specifications | : | ASTM A 307 ASME SA 307 / ASTM A 563 ASME SA 563 |
| Standard | : | DIN, ASTM, BS and all International Standards |
| Length | : | 3 mm to 200 mm |
| Size | : | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Type | : | Hex Head Bolts, Square Bolts, U bolts, Eye bolts, T bolt, Hex Bolt, Lag Bolts, Counter sunk Bolts, Hex Head nuts, Square nuts, Lock nuts, Eye nuts, wing nuts, T nuts, Panel Nuts, Coupling Nuts, Dome nuts, Acorn Nuts. |
| Element | Carbon, max | Manganese, max | Phosphorus, max | Sulfur, max |
| Grade A | 0.29 % | 1.20 % | 0.04 % | 0.15 % |
| Grade B | 0.29 % | 1.20 % | 0.04 % | 0.05 % |
| Grade | Tensile, ksi | Yield, min, ksi | Elong %, min |
|---|---|---|---|
| A | 60 min | — | 18 |
| B | 60 – 100 | — | 18 |
| C* | 58 – 80 | 36 | 23 |
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.
Carbon Steel Nuts are often used in construction frameworks, industrial equipment, automotive assemblies, agricultural machinery, and piping systems. In structural engineering, they secure steel girders, beams, and anchor plates. In manufacturing and fabrication, they are involved in machinery housings, conveyor systems, and metal frames. These nuts are also prevalent in maintenance, repair, and overhaul projects where cost and availability are key. When coated, they can be used outdoors or in mildly corrosive environments. Their versatility, strength, and compatibility with carbon steel bolts and threaded rods make them crucial in general fastening applications.
We take utmost care while packing the Carbon Steel nuts that are manufactured at Punit Fasteners. Every nut is covered with protective materials to ensure that they do not get damaged, corroded, or contaminated during transportation. Our packaging is made of durable cartons and we allow customers to choose the kind of packaging they want. Clear labeling and packing also help in identification and handling and are a testimony to our quality products delivered in good condition.
Punit Fasteners is a leading manufacturer and supplier of high-quality fasteners in Delhi, India, with over 15 years of experience serving global industries.
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