DIN 127 Spring Washer

DIN 127 Spring Washer

What is a Spring Washer?

Spring washers are critically important industrial components that prevent the loosening of threaded fasteners in environments with vibration and dynamic loads. These specially designed washers, defined by the DIN 127 standard, operate on a spring principle, applying continuous pressure, unlike traditional flat washers.

Working Principle and Technical Advantages

When a spring washer is positioned between a nut or bolt and the connection surface, its open-ended structure provides excellent seating by flexing during tightening. This flexing action applies a continuous axial pressure force to the fasteners, effectively preventing loosening caused by vibration and dynamic loads in the system.

DIN 127 Standard and Features

The DIN 127 standard is an internationally accepted norm established by the German Institute for Standardization that defines the technical specifications, dimensions, and tolerances of spring washers. Washers produced in compliance with this standard offer a guarantee of high quality and reliability.

DIN 127 Spring Washer Technical Data

DIN 127 SPRING WASHER TECHNICAL DATA

M3 - M16 DIMENSIONS
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Thread Diameter D1 MIN D1 MAX D2 MAX H MIN H MAX B MIN B MAX S MIN S MAX GR/P
M.3 3.1 3.4 6.2 1.6 1.9 1.3 1.4 0.7 0.9 0.11
M.4 4.1 4.4 7.6 1.8 2.1 1.4 1.6 0.8 1.0 0.18
M.5 5.1 5.4 9.2 2.4 2.8 1.7 1.9 1.1 1.3 0.36
M.6 6.1 6.5 11.8 3.2 3.8 2.35 2.65 1.5 1.7 0.88
M.7 7.1 7.5 12.8 3.2 3.8 2.85 2.65 1.5 1.7 0.93
M.8 8.1 8.5 14.8 4.4 4.7 2.85 2.85 1.9 2.1 1.6
M.10 10.2 10.7 18.1 4.4 5.2 3.3 3.7 2.05 2.35 2.53
M.12 12.2 12.7 21.1 5.0 5.9 3.8 4.2 2.35 2.65 3.82
M.14 14.2 14.7 24.1 6.0 7.1 4.3 4.7 2.85 3.15 6.01
M.16 16.2 17.7 27.4 7.0 8.3 4.8 5.2 3.3 3.7 8.91
M18 - M45 DIMENSIONS
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Thread Diameter D1 MIN D1 MAX D2 MAX H MIN H MAX B MIN B MAX S MIN S MAX GR/P
M.18 18.2 19.0 29.4 8.0 8.3 4.8 5.2 3.3 3.7 9.73
M.20 20.2 21.7 33.6 8.0 9.4 5.8 6.2 3.8 4.2 15.2
M.22 22.5 22.5 35.9 8.0 9.4 5.8 6.2 3.8 4.2 16.5
M.24 24.5 25.5 40.0 10.0 11.8 6.75 7.25 4.8 5.2 26.2
M.27 27.5 28.5 43.0 11.8 11.8 6.75 7.25 4.8 5.2 28.7
M.30 30.5 31.5 48.2 12.0 14.2 7.75 8.25 5.8 6.2 44.3
M.36 36.5 39.5 58.2 12.0 14.2 9.75 10.25 5.8 6.2 67.3
M.39 39.5 42.5 61.2 12.0 14.2 10.25 10.75 5.8 6.2 71.7
M.42 42.5 45.5 66.2 12.0 16.5 12.0 12.5 7.0 7.5 111
M.45 45.5 45.7 71.2 14.0 16.5 12.0 12.5 7.0 7.5 117
MATERIAL TYPES
  • Steel
  • Stainless
COATING TYPES
  • Electrolytic Coating
  • Hot Dip Galvanizing
  • Zinc Coating
Manufacturing can be done in non-standard sizes and material types.

  • Compatibility guarantee with standardized dimensions

  • Reliable performance with quality control criteria

  • Technically approved international specifications

  • Material standards for durability and long life

DIN 127 spring washers are used in a wide range of applications, from vibrating machinery to the automotive industry.

  • Automotive Industry: Engine connections, chassis systems, exhaust connections

  • Machinery Manufacturing: Vibrating screens, conveyor systems, press machines

  • Construction Sector: Heavy machinery, crane systems, concrete pumps

  • Energy Sector: Wind turbines, generator connections, pump systems

  • Railway Systems: Rail connections, wagon systems, signaling equipment

  • Agricultural Machinery: Combine harvesters, tractors, irrigation systems

1. Vibration Resistance

Spring washers increase system reliability by maintaining connection security even in high-frequency vibrations.

2. Thermal Stability

Thanks to their structures that are minimally affected by temperature changes, they perform within a wide operating temperature range.

3. Self-Locking

The ability to provide secure connections without the need for extra locking elements.

4. Easy Assembly

Practical design that can be easily mounted with standard wrenches.

5. Long Lifespan

They offer a long service life because they are produced from high-quality materials.

  • Material Options:

    • Carbon Steel: Economical solution for general-purpose applications

    • Stainless Steel (304 and 316 grade): Applications requiring corrosion resistance

    • Copper Alloys: Special applications requiring electrical conductivity

    • Brass: Applications requiring decorative and low magnetic properties

    Coating Options:

    • Electrolytic Zinc Coating: Standard corrosion protection

    • Hot Dip Galvanizing: High-level corrosion resistance

    • Phosphate Coating: Surface preparation that enhances paint adhesion

    • Cadmium Coating: Superior performance in marine environments

    • Nickel Coating: Decorative and corrosion-resistant surface

1. Load Analysis

  • Static and dynamic load amount

  • Vibration frequency and intensity

  • Thermal expansion coefficients

2. Environmental Conditions

  • Operating temperature range

  • Humidity and corrosion risk

  • Chemical exposure

3. Mechanical Requirements

  • Required compression force

  • Ease of assembly and disassembly

  • Need for reuse

Regular Control Periods:

  • 3-month periods: In high-vibration environments

  • 6-month periods: Under moderate working conditions

  • Annual checks: In constant load systems

Control Criteria:

  • Corrosion and wear status

  • Checking for elasticity loss

  • Examination for loosening signs

When Should Spring Washers Be Replaced?

Spring washers should be replaced when they lose their elasticity or when visible deformation occurs.

Can Spring Washers Be Used on Different Materials?

Yes, stainless steel spring washers can be used in different material combinations.

Can Spring Washers Be Reused?

DIN 127 spring washers can be reused a limited number of times as long as they are not deformed.

DIN 127 spring washers are indispensable components for reliability and performance in industrial connection systems. With correct selection and application, they extend system life, reduce maintenance costs, and increase operational safety. For ensuring connection security in vibrating environments, the use of DIN 127 standard spring washers is accepted as the gold standard in industrial applications.

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