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Internal Star Washers Manufacturer & Supplier | Stainless Steel 304 Grade | Ananka Group

Internal Star Washers Manufacturer & Supplier | Stainless Steel 304 Grade | Ananka Group
Specification Details
SizeM3 to M100
TypeWasher
StandardIso, Din
Length1/8″, 4″
MaterialStainless Steel

Internal Star Washers Manufacturer – ASTM F844

Ananka Group is a leading Internal Star Washer Manufacturer in India, produces high-quality fastening components designed to prevent loosening of bolted joints due to vibration and torque. The internal star washer or internal tooth lock washer consists of teeth that cut themselves into the mating surface and head of the bolt or screw to give the connection stability and security. Such washers find great utility in the auto industry, in electronics, in machines and constructions, and anywhere else where a stable joint is vital. High-quality stainless steel, carbon steel, and alloy steel are employed to fabricate durable washers with reliable performance characteristics. Modern stamping and heat treatment technologies guarantee perfect geometry and optimum strength.


After reviewing the weight chart, it becomes easier to select the appropriate size and thickness for different industrial applications. Manufacturers also provide a variety of sub-products to meet diverse needs, such as:

  • Stainless Steel Internal Star Washers – Ideal for corrosion resistance and outdoor applications
  • Carbon Steel Internal Star Washers – Suitable for heavy-duty industrial use
  • Zinc-Plated Internal Star Washers – Provide added protection against rust and chemical exposure

These variations allow engineers and manufacturers to choose the right type based on application requirements, surface material, and environmental conditions. Customization options include tooth style, diameter, thickness, and coating, ensuring optimal performance and safety for critical assemblies.


We use advanced manufacturing techniques make sure that their supply is prompt, and there is no variation in quality in various parts of the world. The process of quality assurance involves inspections of dimensions, testing for hardness, and verifying the coatings, which make these washers perform efficiently. Along with the manufacturing process, manufacturers guide customers about the proper selection of sizes and material. It makes these washers an important part of various industrial machines.

Material & Grades Table – Internal Star Washers

MaterialGrade / StandardSize / Thickness / DiameterExtra SpecificationWeight (kg/1000 pcs)
Stainless SteelSS 304 / ASTM F844M3–M24, 0.5–2.5 mm thickGeneral-purpose corrosion-resistant washerApprox. 0.5–170
Stainless SteelSS 316 / ASTM F844M3–M24, 0.5–2.5 mm thickMarine and chemical environmentsApprox. 0.5–170
Stainless SteelSS 316LM3–M24, 0.5–2.5 mm thickLow-carbon corrosion-resistant constructionApprox. 0.5–170
Carbon SteelSAE 1070M3–M24, 0.5–2.5 mm thickHigh-carbon locking washerApprox. 0.5–170
Spring SteelASTM A684M3–M24, 0.5–2.5 mm thickHigh resilience and tooth recoveryApprox. 0.5–170
Carbon SteelC45 / EN 10083M4–M24, 0.6–3.0 mm thickHardened locking applicationsApprox. 0.8–210
Phosphor BronzeC51000 / ASTM B139M3–M20, 0.5–2.0 mm thickElectrical and corrosion-resistant applicationsApprox. 0.5–130
BrassASTM F467M3–M20, 0.5–2.0 mm thickElectrical and general applicationsApprox. 0.5–130


Key Features & Advantages

  • Internal teeth provide effective mechanical locking
  • Helps resist rotational loosening under suitable conditions
  • Compact external profile for space-limited assemblies
  • Stainless steel options provide excellent corrosion resistance
  • Spring steel provides good tooth resilience and recovery
  • Suitable for electrical grounding applications where properly specified
  • Available in customized sizes, tooth profiles, materials, and finishes

Chemical Composition

Representative Grade: Stainless Steel 304

ElementPercentage (%)
Chromium (Cr)18.0–20.0
Nickel (Ni)8.0–10.5
Manganese (Mn)2.00 max.
Carbon (C)0.080 max.
Silicon (Si)1.00 max.
Iron (Fe)Balance

Mechanical Properties

PropertyValue
Tensile Strength515 MPa min.
Yield Strength205 MPa min.
Elongation40% min.
Hardness92 HRB max.

Equivalent Grade

StandardGrade
ASTM304
UNSS30400
EN1.4301
DINX5CrNi18-10




Type of Sub-products

Frequently Asked Questions

Which grades are available for Stainless Steel 304 Internal Star Washers?

What specifications are available for Stainless Steel 304 Internal Star Washers?

How do I select the right Stainless Steel 304 Internal Star Washers?

Where are Stainless Steel 304 Internal Star Washers commonly used?

Are Stainless Steel 304 Internal Star Washers suitable for corrosive

Can I order Stainless Steel 304 Internal Star Washers in bulk?

How can I request a quotation for Stainless Steel 304 Internal Star Washers?

Countries We Export

  • India

Cities We Supply

  • Ahmadnagar

  • Ahmadpur

  • Ahmedabad

  • Bangalore Rural

  • Bangalore Urban

  • Bengaluru

  • Chandigarh

  • Chennai

  • Coimbatore

  • Haridwar

  • Hyderabad

  • Jaipur

  • Jodhpur

  • Jodhpur (ahmedabad)

  • Kalyan

  • Kolhapur

  • Kolkata

  • Lucknow

  • Mumbai

  • Mumbai Suburban

  • Murud (raigad)

  • Nagpur

  • Nashik

  • Navi Mumbai

  • New Delhi

  • Pune

  • Raipur

  • Rajkot

  • Rampura

  • Sion, Mumbai

  • Surat

  • Thane

  • Varanasi

  • Visakhapatnam

  • Moradabad

  • Angul

  • Rudrapur

  • Hosdurg

  • Gandhinagar

  • Rajahmundry

  • Durgapur

  • Bharuch

  • Panipat

Industries We Serve

  • Sugar industry

    Sugar

  • Oil And Gas Industries industry

    Oil And Gas Industries

  • Paper Mill industry

    Paper Mill

  • Power Plant industry

    Power Plant

  • Bridge And Building industry

    Bridge And Building

  • Aerospace Industries industry

    Aerospace Industries

  • Automobile Industry industry

    Automobile Industry

  • Electrical Industry industry

    Electrical Industry

  • Defense Industry industry

    Defense Industry

  • Construction & Fabrications industry

    Construction & Fabrications

  • Ring Man Units industry

    Ring Man Units

  • Railways industry

    Railways

  • Gasket Industry industry

    Gasket Industry

  • Pharmaceuticals Industry industry

    Pharmaceuticals Industry

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