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Fasteners & Fittings

Fasteners & Fittings Manufacturer, Supplier & Exporter – Inox Steel India

Inox Steel India is a trusted manufacturer, supplier, and exporter of Fasteners & Fittings, supplying high-performance bolts, nuts, studs, threaded rods, and connectors for applications where strength, thread accuracy, corrosion resistance, and reliability are critical. Our fasteners are widely used across engineering, oil & gas, power, marine, automotive, and infrastructure sectors in India and international markets.

Backed by a strong raw-material base of precision bright bars—including cold drawn, polished, centerless ground, and custom cut lengths—Inox Steel India delivers fasteners that meet stringent mechanical and dimensional standards. This integrated approach ensures consistent quality, dependable performance, and traceability across every batch supplied.

What Are Fasteners & Fittings?

Fasteners & Fittings are mechanical components used to join, clamp, or connect parts in assemblies, structures, and pressure systems. They play a critical role in maintaining structural integrity, pressure containment, and vibration resistance.

Products Covered:

  • Bolts – Hex bolts, heavy hex bolts, structural bolts
  • Nuts – Hex nuts, heavy hex nuts, lock nuts
  • Connectors – Stud bolts, threaded rods, special connectors

Each product is manufactured to ensure accurate threading, load-bearing capability, and long service life.

Table of Contents

Why Bright Bars Are Used for Fasteners

Bright bars are the preferred raw material for fasteners due to their uniform grain structure, straightness, and controlled diameter, which directly influence thread quality and mechanical strength.

Advantages of Bright Bars in Fasteners:
✔ Accurate and consistent thread formation
✔ High tensile and shear strength
✔ Reduced rejection in thread rolling
✔ Improved fatigue resistance
✔ Reliable batch-to-batch repeatability

Inox Steel India manufactures fasteners in carbon steel, alloy steel, stainless steel, duplex, nickel alloys, and titanium, selected based on load, temperature, and corrosion requirements.

Materials & Grades Available

  • Carbon Steel: EN8, C45
  • Alloy Steel: EN19, EN24, 4140
  • Stainless Steel: 304, 316, 303, 410
  • Duplex & Super Duplex: 2205, 2507
  • Nickel Alloys: Inconel 625, Monel 400
  • Titanium: Grade 2, Grade 5

All fasteners are supplied with EN 10204 3.1 / 3.2 Mill Test Certificates, ensuring complete material traceability and compliance with international standards.

FASTENERS & FITTINGS – MASTER TECHNICAL DATA SHEET
Products: Bolts · Nuts · Connectors

Parameter / Property Fasteners & Fittings
Application Category Fasteners & Fittings
Typical Products Bolts · Nuts · Studs · Threaded Rods · Connectors · Special Fasteners
Raw Material Forms Bright Bars (Cold Drawn · Polished · Centerless Ground · Custom Cut Lengths)
Available Materials Carbon Steel · Alloy Steel · Stainless Steel · Duplex & Super Duplex · Nickel Alloy · Titanium
Common Grades EN8, C45 · EN19, EN24, 4140 · SS 304/316/303/410 · Duplex 2205 / 2507 · Inconel 625 · Monel 400 · Ti Gr 2 / Gr 5
Applicable Standards ASTM · ASME · ISO · DIN · EN · IS
Fastener Standards ISO 898 · ISO 3506 · ASTM A193 / A194 · DIN 933 / 934
Thread Types Metric · UNC · UNF · BSW · BSP
Diameter Range M6 – M100 (Custom Sizes Available)
Length Range As per Drawing / Standard
Tolerance Class ISO 6g / 6H (As Applicable)
Surface Finish (Ra) ≤ 0.8 – 1.6 µm (Material & Process Dependent)
Heat Treatment Options Annealed · Q&T · Solution Annealed
Mechanical Properties High Tensile Strength · Shear Resistance · Fatigue Resistance
Corrosion Resistance Carbon / Alloy (Coated) · SS / Duplex / Nickel (Inherent)
Testing Performed Chemical · Mechanical · Dimensional · Thread Gauging
Certification EN 10204 3.1 / 3.2
HSN / HS Code 7318 / 7222 / 7505 / 8108 (Material Dependent)
Typical Applications Structural Joints · Pressure Vessels · Piping Systems
Industries Served Engineering · Oil & Gas · Power · Marine · Automotive
Packaging Box Packing · Bag Packing · Palletized · Export Seaworthy

Product-Wise Applications & Functional Requirements

Fasteners & Fittings supplied by Inox Steel India are engineered to perform under high tensile loads, vibration, pressure, and corrosive environments. Each product type is selected and manufactured based on application stress, service temperature, and environmental exposure.

Product Breakdown:

  • Bolts
    Used for structural and pressure-tight joints.
    Applications: Flanges, structural frames, machinery assembly
    Preferred Materials: C45, EN19, EN24, SS 304/316, Duplex
    Key Requirements: Tensile strength, thread accuracy, fatigue resistance
  • Nuts
    Used to secure bolts and maintain joint integrity.
    Applications: Pressure vessels, pipelines, heavy equipment
    Preferred Materials: EN8, EN19, SS 304/316, Duplex
    Key Requirements: Proof load capacity, thread compatibility, hardness control
  • Connectors (Stud Bolts, Threaded Rods)
    Used for flange connections and high-pressure assemblies.
    Applications: Oil & gas pipelines, refineries, power plants
    Preferred Materials: ASTM A193 B7 / B16, SS 316, Inconel 625, Monel 400
    Key Requirements: High-temperature strength, corrosion resistance, dimensional stability

Manufacturing Capabilities & Tolerance Control

Inox Steel India supports industrial and project-grade fasteners with controlled manufacturing and inspection.

  • Diameter Range: M6 – M100 (custom sizes available)
  • Thread Standards: Metric · UNC · UNF · BSW · BSP
  • Tolerance Class: ISO 6g / 6H
  • Surface Finish (Ra): ≤ 0.8 – 1.6 µm
  • Threading Process: Thread rolling / thread cutting (as specified)

These controls ensure perfect thread engagement, high clamp load, and reduced loosening under vibration.

Heat Treatment & Surface Protection

Fasteners & fittings can be supplied with heat treatment and coatings to enhance performance:

  • Heat Treatment:
    Annealed · Quenched & Tempered (Q&T) · Solution Annealed (SS/Nickel)
  • Surface Coatings (Carbon / Alloy Steel):
    Black · Zinc Plated · Hot Dip Galvanized · PTFE / Xylan (on request)

Stainless, duplex, nickel alloy, and titanium fasteners rely on inherent corrosion resistance.

Indicative Fasteners & Fittings Price (INR & USD)

Product Type Approx. Price (INR / kg – Ex-Mumbai) Approx. Price (USD / kg – FOB India)
Carbon Steel Fasteners ₹ 140 – ₹ 240 $ 1.70 – $ 2.90
Alloy Steel Fasteners ₹ 220 – ₹ 380 $ 2.65 – $ 4.55
Stainless Steel Fasteners ₹ 320 – ₹ 520 $ 3.85 – $ 6.25
Duplex / Nickel Alloy Fasteners ₹ 550 – ₹ 1,200 $ 6.65 – $ 14.40
Titanium Fasteners ₹ 3,800 – ₹ 6,500 $ 45.75 – $ 78.00

Prices vary based on grade, size, standard, coating, and order quantity.

Quality Control & Inspection

All fasteners & fittings undergo stringent inspection before dispatch:

  • Chemical & Mechanical Testing
  • Tensile, Proof Load & Hardness Testing
  • Dimensional & Thread Gauging
  • Coating Thickness Measurement (if applicable)
  • Visual & Surface Inspection
  • Batch Traceability & Identification
  • Third-Party Inspection (SGS / BV / TÜV) on request

Supplies are delivered with EN 10204 3.1 / 3.2 certification.

Why Choose Inox Steel India for Fasteners & Fittings

Inox Steel India is a dependable manufacturer, supplier, and exporter of Fasteners & Fittings, delivering bolts, nuts, studs, and connectors engineered for high load, pressure integrity, and corrosion resistance. Our fasteners are trusted across critical industries for their strength, precision threading, and long-term reliability.

Our Core Strengths:

✅ Manufacturer & bulk stockholder
✅ Wide size range: M6 – M100
✅ Precision thread standards: Metric, UNC, UNF, BSW, BSP
✅ Heat treatment options: Q&T, solution annealed
✅ Coating options for carbon & alloy steel
✅ Wide material range: Carbon, Alloy, SS, Duplex, Nickel, Titanium
✅ EN 10204 3.1 / 3.2 certification
✅ Competitive domestic & export pricing
✅ Export-grade packaging & documentation

Industries & Applications We Serve

Industry Typical Applications
Oil & Gas Flange bolting, pipeline joints
Power Plants High-temperature fasteners
Marine & Offshore Corrosion-resistant connectors
Automotive & Engineering Structural & assembly fasteners
Construction & Infrastructure Load-bearing joints

Fasteners & fittings are selected where joint integrity, safety, and service life are non-negotiable.

ASTM, ASME, ISO, DIN, EN, and IS standards.

 

Yes, we supply duplex, nickel alloy, and titanium fasteners for extreme environments.

 

Yes, zinc plated, black, hot dip galvanized, and PTFE coatings are available.

 

Yes, Inox Steel India exports fasteners & fittings worldwide with certification.

 

EN 10204 3.1 / 3.2 Mill Test Certificates and inspection reports.