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Internal Star Washers

Welcome to Teshi Fasteners’ Internal Star Washers page, where innovation meets performance. As a leading manufacturer, supplier, and exporter of fasteners in India, we offer a superior selection of internal star washers designed to provide secure fastening and prevent loosening in a variety of applications.

Leading Manufacturer, Stockist, Supplier, and Exporter of Internal Star Washers in India

Teshi Fasteners is acclaimed for producing high-quality internal star washers that meet the highest industry standards. Our internal star washers are available in diverse sizes, materials, and finishes, making them ideal for numerous industrial, automotive, and construction applications. Whether you need internal star washers for enhancing the reliability of your assemblies or securing components, we deliver products that combine durability with effectiveness.

About Internal Star Washers

Internal star washers, also known as internal tooth lock washers, feature a series of teeth or prongs that are arranged in a star pattern around the center hole. These teeth are designed to grip into the surface of the material being fastened, creating a secure lock that helps prevent the fastener from loosening due to vibrations or dynamic forces. The internal design makes these washers particularly effective in confined spaces where external star washers may not be suitable.

At Teshi Fasteners, we manufacture internal star washers with precision from high-quality materials to ensure exceptional performance and longevity. Our washers are available in materials such as carbon steel, stainless steel, and alloy steel, and can be coated for enhanced corrosion resistance.

Key Features of Internal Star Washers

  • Secure Locking Mechanism: The internal teeth of the washer grip into the surface, preventing loosening of the fastener and ensuring a stable connection.
  • Corrosion Resistance: Available with protective coatings such as galvanized or stainless steel to resist corrosion in harsh environments.
  • High Tensile Strength: Crafted from robust materials, providing strength and resistance to deformation.
  • Compact Design: Ideal for use in confined spaces where external star washers may not fit.
  • Versatile Use: Suitable for various applications including automotive, machinery, electronics, and construction.
  • Enhanced Stability: Provides additional stability and secure fastening in high-vibration or dynamic environments.

Benefits of Internal Star Washers

  • Prevents Loosening: The star-shaped teeth ensure that the washer locks into the material, preventing nuts and bolts from loosening over time.
  • Durability: Made from high-quality materials to withstand significant stress and environmental conditions.
  • Corrosion Resistance: Coatings such as galvanization or stainless steel protect the washers from rust and corrosion.
  • Cost-Effective: Provides a reliable and affordable solution for improving the performance and stability of fastened assemblies.
  • Compact and Versatile: Useful in applications with limited space, ensuring a secure fit in confined areas.
  • Easy to Install: Simple to incorporate into existing assemblies, requiring no special tools or techniques.

Internal Star Washers : Sizes, Grades & Standards.

Explore our detailed guide on Internal Star Washers, including grades, standards, and sizes. Learn how our products meet the highest industry standards to deliver reliable performance across various applications.

Internal Star Washers Grades & Standards

Specification
MaterialStandardsGrades
Nickel AlloyASTM / ASME SB 160 / 164 / 425 / 166 / 446 / 574 / 472UNS 2200 (NICKEL 200) / UNS 2201 (NICKEL 201), UNS 4400 (MONEL 400), UNS 8825 (INCONEL 825), UNS 6600 (INCONEL 600) / UNS 6601 (INCONEL 601), UNS 6625 (INCONEL 625), UNS 10276 (HASTELLOY C 276), UNS 8020 (ALLOY 20 / 20 CB 3)
Stainless SteelASTM / ASME A/SA 193 / 194B 8 (304), B 8C (SS 347), B 8M (SS 316), B 8 T (SS 321), A 2, A 4
Alloy SteelASTM / ASME A/SA 193 / 194 GRB 6, B 7/ B 7M, B 16, 2, 2HM, 2H, GR 6, B 7, B 7M
Duplex SteelUNS NO. S 31803, S 32205Range: M10 TO M100, LENGTH UPTO 5 METERS
Nonmetallic Materials:Acrylic, Kel-F, Lexan, Polypropylene, Poly Vinyl Chloride, Teflon, Zytel 31, 101, 105
High-Temp AlloysDiscaloy, 19-9 DL, 16-25-6, A286, Titanium, Nimonic 80, Mulitmet, Haynes 25, Greek Ascalloy, Unitemp 252, Udimet 500, Rene 41, Inco 700, Inco 901, Hastelloy X, 235, Waspaloy, RA 330
Copper Base AlloysCopper, Brasses: Yellow, Free-cut, Red, Naval, Bronze: Commercial, Phosphor, Silicon A & B, Aluminum, Silicon-Aluminum, Manganese, Ampco Alloys, Munitz Metal, Cupro-Nicles
Titanium–GR1, GR2, GR3, GR5, GR7, GR9, GR12, GR16, Gr23 so on
Zirconium–R60702
Other metalTantalum, Niobium, Cobalt, Wolfram, Molybdenum
Titanium Damascus, Zirconium Damascus––

Internal Star Washers Sizes

Internal Star Washers
Nominal Washers SizeABC
Inside DiameterOutside DiameterThickness
MAXMINMAXMINMAXMIN
20.0860.0920.0890.2000.1750.0150.010
40.1120.1230.1150.2700.2450.0190.015
60.1380.1500.1410.2950.2750.0210.017
80.1640.1760.1680.3400.3250.0230.018
100.1900.2040.1950.3810.3650.0250.020
120.2160.2310.2210.4100.3940.0250.020
1/40.2500.2670.2560.4780.4600.0280.023
5/160.3120.3320.3200.6100.5940.0340.028
3/80.3750.3980.3840.6920.6700.0400.032
7/160.4380.4640.4480.7890.7410.0400.032
1/20.5000.5300.5120.9000.8670.0450.037
5/80.6250.6630.6401.0711.0450.0500.042
1/8PIPE0.4250.4100.6150.5950.0220.017
Dimensions per ASME

Applications & Uses of Internal Star Washers

Internal star washers are crucial in many industries where secure and stable fastening is essential. Common applications include:

  • Automotive Industry: Prevent loosening of bolts and screws in engine components and suspension systems; ensure fasteners remain tight under vehicle vibrations and stresses.
  • Machinery and Equipment: Secure fasteners in industrial machinery exposed to frequent vibrations and operational forces; enhance machinery performance and stability.
  • Aerospace Industry: Maintain secure fastening in critical aircraft components; ensure high performance and safety in high-vibration environments.
  • Electronics and Electrical: Secure connections in electronic devices and assemblies; prevent loosening due to thermal expansion and vibrations.
  • Construction and Infrastructure: Secure bolts and screws in frameworks, bridges, and other structural components; enhance stability and integrity under dynamic forces.
  • Marine Industry: Secure fasteners in ship structures and marine equipment; provide durability and corrosion resistance in saltwater environments.
  • Railway Applications: Prevent loosening of bolts and screws in railway track assemblies; ensure stability and safety of rail infrastructure under dynamic loads.
  • Agricultural Equipment: Secure fasteners in farm machinery subjected to heavy use and harsh conditions; maintain effective and reliable operation of agricultural equipment.
  • Home Appliances: Secure components in appliances like washing machines and dryers; enhance reliability and reduce the risk of loosening during operation.

Teshi Fasteners guarantees that each internal star washer is manufactured to the highest standards, offering a dependable and effective solution for preventing fastener loosening in diverse industries and applications.