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Fasteners Manufacturer & Supplier | Stainless Steel 304 & 316 Grades | Neptune Alloys

Fasteners Manufacturer & Supplier | Stainless Steel 304 & 316 Grades | Neptune Alloys

Fastener Manufacturer in India

Neptune Alloys is a top Fasteners Manufacturer producing high-performance fastening solutions made from stainless steel, carbon steel, alloy steel, Inconel, Monel, and titanium. These fasteners are engineered for strength, corrosion resistance, and precise load-bearing across dynamic environments. Manufactured in accordance with ASTM A193, ASTM A320, DIN 933, and ISO 898 standards, our range includes bolts, nuts, screws, washers, and studs used in automotive, marine, aerospace, construction, and heavy engineering industries.

Designed for B2B reliability, our Fasteners are available in a wide range of threads, heads, coatings, and tensile classes to meet diverse industrial applications. They ensure secure, long-lasting assembly in structural and high-pressure systems, making them ideal for OEMs, fabrication houses, and maintenance contractors. With custom packaging, rapid logistics, and bulk readiness, these fasteners streamline industrial operations and support large-scale infrastructure projects.

Our industrial fasteners are manufactured with strict quality control measures to ensure dependable performance and long service life. Engineered for strength, precision, and durability, these fastening solutions are suitable for demanding industrial environments where reliability is critical. Available in a wide range of materials, sizes, and finishes, they provide effective joining solutions for both standard and specialized applications. Contact us to discuss project requirements or request a customized quotation tailored to your specifications.


Material & Grades Table – Fasteners

MaterialGrade / StandardSize / Thickness / DiameterExtra SpecificationWeight (kg/1000 pcs)
Stainless SteelSS 304 / ASTM F593/F594M3–M36General-purpose corrosion-resistant fastenersApprox. 1–800
Stainless SteelSS 316 / ASTM F593/F594M3–M36Marine and chemical applicationsApprox. 1–800
Stainless SteelSS 316LM3–M36Low-carbon corrosion-resistant fastenersApprox. 1–800
Carbon SteelASTM A307 / A563M4–M36General industrial fasteningApprox. 2–900
Carbon SteelASTM A325 / A4901/2–1-1/2 inStructural high-strength fasteningApprox. 40–1000
Alloy SteelASTM A193 Grade B7M8–M48High-temperature and pressure applicationsApprox. 10–1500
Alloy SteelISO 898-1 Class 8.8M5–M36High-strength metric fasteningApprox. 2–900
Alloy SteelISO 898-1 Class 10.9M5–M36Heavy-duty mechanical applicationsApprox. 2–900


Key Features & Advantages

  • Wide range of fastening components for industrial applications
  • High mechanical strength and reliable joint performance
  • Excellent dimensional accuracy and thread consistency
  • Stainless steel options provide excellent corrosion resistance
  • High-strength alloy steel grades support demanding applications
  • Available in standard and customized configurations
  • Suitable for construction, machinery, piping, automotive, and fabrication

Chemical Composition

Representative Grade: Stainless Steel 316

ElementPercentage (%)
Chromium (Cr)16.0–18.0
Nickel (Ni)10.0–14.0
Molybdenum (Mo)2.0–3.0
Manganese (Mn)2.00 max.
Carbon (C)0.080 max.
Iron (Fe)Balance

Mechanical Properties

PropertyValue
Tensile Strength515 MPa min.
Yield Strength205 MPa min.
Elongation40% min.
Hardness95 HRB max.

Equivalent Grade

StandardGrade
ASTMF593 / F594 Type 316
UNSS31600
EN1.4401
DINX5CrNiMo17-12-2


Type of Sub-products

Frequently Asked Questions

Which material is suitable for my Fasteners requirement?

Are Fasteners available in standard sizes?

What factors determine the right Fasteners for my application?

Can Fasteners be supplied according to project specifications?

Are international standards available for Fasteners?

Can I request additional testing for Fasteners?

What commercial details should I confirm before ordering Fasteners?

Countries We Export

  • India

Cities We Supply

  • Bangalore Urban

  • Hyderabad

  • Jaipur

  • Kalyan

  • Rampura

  • Sion, Mumbai

  • Surat

  • Thane

  • Gandhinagar

  • Rajahmundry

  • Panipat

  • Ahmadnagar

  • Ahmadpur

  • Bangalore Rural

  • Chandigarh

  • Chennai

  • Coimbatore

  • Haridwar

  • Jodhpur

  • Kolhapur

  • Mumbai

  • Murud (raigad)

  • Navi Mumbai

  • New Delhi

  • Rudrapur

  • Hosdurg

  • Durgapur

  • Ahmedabad

  • Jodhpur (ahmedabad)

  • Kolkata

  • Mumbai Suburban

  • Nashik

  • Raipur

  • Rajkot

  • Varanasi

  • Visakhapatnam

  • Angul

  • Bengaluru

  • Lucknow

  • Nagpur

  • Pune

  • Moradabad

  • Bharuch

Industries We Serve

  • Oil And Gas Industries industry

    Oil And Gas Industries

  • Gasket Industry industry

    Gasket Industry

  • Sugar industry

    Sugar

  • Automobile Industry industry

    Automobile Industry

  • Defense Industry industry

    Defense Industry

  • Construction & Fabrications industry

    Construction & Fabrications

  • Paper Mill industry

    Paper Mill

  • Bridge And Building industry

    Bridge And Building

  • Aerospace Industries industry

    Aerospace Industries

  • Railways industry

    Railways

  • Pharmaceuticals Industry industry

    Pharmaceuticals Industry

  • Power Plant industry

    Power Plant

  • Electrical Industry industry

    Electrical Industry

  • Ring Man Units industry

    Ring Man Units

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