Fasteners Manufacturer, Stockist & Exporter in India

Fasteners Manufacturer, Stockist & Exporter in India – Exotic Metals LLP

Introduction: The Foundation of Precision Engineering

At Exotic Metals LLP our Industrial Fasteners are the precision-engineered components that hold the industrial world together. A fastener is more than just a bolt or a screw; it is a critical mechanical link designed to withstand immense tensile, shear, and vibration forces. Unlike welding, fasteners provide a non-permanent joining solution, allowing for the modular assembly, maintenance, and repair of everything from deep-sea oil rigs to high-speed aerospace engines.

Fasteners Manufacturer & Supplier in India

As a premier manufacturer and exporter in India, Exotic Metals LLP produces fasteners that are defined by their metallurgical purity and dimensional accuracy. We specialize in high-performance alloys that resist "galling" (thread seizing) and environmental embrittlement. Whether you require standard heavy hex bolts for structural steel or specialized socket head cap screws for high-pressure valves, our fasteners deliver the clamping force and fatigue resistance required for zero-failure operations.

Technical Specification Table

Feature	Details
Diameter Range	M3 to M100
Length	Up to 5 Meters (for Stud Bolts)
Standard Specifications	ASTM A193, A194, A320, F593, DIN 933, DIN 931, ISO 4014
Thread Types	Metric, UNC, UNF, BSW, ACME
Manufacturing	Cold Forged, Hot Forged, and Precision CNC Machined
Surface Treatment	Zinc Plated, Hot-Dip Galvanized, PTFE/Xylan Coated, Cadmium Plated
Thread Fit	2A, 2B, 3A, 3B (Precision tolerances)

Primary Types of Industrial Fasteners

Exotic Metals LLP offers a specialized range of hardware tailored to specific load-bearing and assembly requirements:

Stud Bolts

The workhorse of the oil and gas industry. Stud bolts are used in conjunction with two nuts to secure flange connections. By distributing the load across the entire length of the bolt.
Heavy Hex Bolts & Screws

The workhorse of the oil and gas industry. Stud bolts are used in conjunction with two nuts to secure flange connections. By distributing the load across the entire length of the bolt.
Washers

Used to prevent surface damage and looseness. Spring washers and wedge-locking washers (Nord-Lock) are critical in environments subjected to high vibration.
Socket Head Cap Screws

Ideal for applications where space is limited. These fasteners feature an internal hexagonal drive that allows for high-torque tightening using an Allen key.
Hex Nuts & Heavy Hex Nuts

The essential counterpart to any bolt. Our nuts are manufactured to match the strength and material grade of the bolt, ensuring that the threads do not strip under high-tension loads.
Threaded Rods

Long-length fasteners used for suspension systems, bracing, and anchor bolts. We provide these in lengths up to 12 feet in both stainless steel and high-tensile carbon steel.

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Grade Range: From High-Tensile to Exotic Alloys

We maintain a massive inventory of fasteners in materials designed for extreme temperature and chemical resistance:

Stainless Steel: B8 (304), B8M (316), B8T (321), B8C (347), 904L, 310S.
Nickel Alloys: Monel 400, K500, Inconel 625, 718, Hastelloy C276, C22.
Duplex & Super Duplex: UNS S31803, S32205, S32750, S32760 (F51, F53, F55).
High-Strength Carbon Steel: Grade 8.8, 10.9, 12.9, ASTM A193 B7, B7M, B16.
Low-Temperature Steel: ASTM A320 L7, L7M (For cryogenic use).

Chemical Composition (%)

Our fasteners are verified for grain flow and chemical purity to ensure consistent torque-tension relationships.

Grade	Carbon (C)	Chromium (Cr)	Nickel (Ni)	Molybdenum (Mo)	Others
ASTM A193 B7	0.37–0.49	0.75–1.20	—	0.15–0.25	Mn: 0.65–1.10
ASTM A193 B8M	0.08 Max	16.0–18.0	10.0–14.0	2.0–3.0	Class 1 or 2
Inconel 718	0.08 Max	17.0–21.0	50.0–55.0	2.8–3.3	Nb+Ta: 4.75
Duplex F51	0.03 Max	21.0–23.0	4.5–6.5	2.5–3.5	N: 0.14–0.2

Mechanical Properties

Tested to ensure safety under maximum preload and environmental fatigue.

Grade	Tensile (MPa)	Yield (MPa)	Elongation (%)	Hardness (HRC)
A193 B7	860 Min	724 Min	16%	35 HRC Max
A193 B8M (Cl 2)	760 Min	655 Min	15%	320 HB Max
Grade 10.9	1040 Min	940 Min	9%	32–39 HRC
Inconel 718	1275 Min	1034 Min	12%	331 HB Min

Protective Coatings for Longevity

At Exotic Metals LLP, we enhance fastener life through specialized surface treatments:

PTFE / Xylan Coating: Provides a low-friction surface that prevents galling and offers exceptional chemical resistance, primarily used in offshore oil and gas.
Hot-Dip Galvanizing (HDG): A thick zinc layer that provides sacrificial protection against atmospheric corrosion in coastal and industrial environments.
Cadmium Plating: Offers high lubricity and corrosion resistance, frequently used in aerospace applications.
Zinc Flake Coating: A high-performance, non-electrolytic coating that eliminates the risk of hydrogen embrittlement in high-tensile (10.9/12.9) fasteners.

Delivery & Packaging Information

We prioritize the protection of thread integrity and organizational ease for onsite teams:

Thread Protection: Large diameter bolts and stud bolts are fitted with individual plastic thread protectors or sleeves.
Surface Guard: To prevent oxidation, fasteners are coated with anti-rust oil or passivated.
Secure Logistics: Fasteners are packed in heavy-duty, moisture-proof plastic bags, placed in reinforced cardboard boxes, and finally secured in seaworthy wooden crates.
Traceability: Every box is labeled with the Heat Number, Size, Grade.
Quality Assurance: We supply Mill Test Certificates (MTC) as per EN 10204 3.1, along with Proof Load Testing and Hardness Testing reports.

Frequently Asked Questions (FAQ)

What grades of bars does Exotic Metals LLP supply?

We supply Stainless Steel, Duplex & Super Duplex, High Nickel Alloys, Titanium Alloys, and Carbon & Alloy Steel grades suitable for diverse industrial applications.

What bar sizes and finishes are available?

We offer hot rolled, cold drawn, centerless ground, polished, peeled, and turned bars in various diameters and lengths, including custom tolerances.

Do you provide Mill Test Certificates (MTC)?

Yes, MTC as per EN 10204 3.1 is provided with every order. Additional reports like PMI, UT, and third-party inspection are available on request.

Fasteners