China Small Washer Manufacturer, Supplier, Factory

In high-performance applications, having the right washers is critical for ensuring long-term reliability and preventing mechanical failure. Small washers may seem simple, but they play an indispensable role in distributing load, preventing loosening, and compensating for thermal expansion. For instance, when you need to maintain tension in a bolted assembly under dynamic loads, Internal Teeth Lock Washers provide excellent resistance to rotation and vibration. Their internal teeth bite into the material, creating a secure lock. Meanwhile, for applications requiring a lighter preload and vibration damping, our Light Type Single Coil Spring Lock Washers offer a cost-effective and reliable solution. When you're dealing with oversized bolt holes or need a larger bearing surface, our Extra Large Washer is engineered to prevent pull-through and reduce surface pressure. And for the highest tension and spring action in demanding environments, the Conical Spring Washer is unparalleled, maintaining clamp force even under significant stress and thermal cycling. Choosing the correct small washer directly impacts the safety, performance, and longevity of your equipment.


The Small Washer is engineered with precision to meet the highest industrial standards. Its compact design belies its significant role in maintaining the integrity of a bolted joint. Below are the detailed specifications and technical data for the standard Small Washer.

Small Washer: Standard Specifications

  • Material: Carbon Steel, Grade 1050
  • Surface Finish: Plain, Zinc Plated, or Phosphated
  • Standards: Compliant with ASME B18.21.1, DIN 127, and ISO 7089
  • Operating Temperature: -20°C to +120°C (Standard Finish)
Nominal Size (M) Inside Diameter (mm) Outside Diameter (mm) Thickness (mm) Approx. Weight per 1000 pcs (kg)
M3 3.2 7.0 0.5 0.12
M4 4.3 9.0 0.8 0.25
M5 5.3 10.0 1.0 0.40
M6 6.4 12.0 1.6 0.95
M8 8.4 16.0 1.6 1.70

Mechanical Properties

Material Grade Hardness (HV) Tensile Strength (MPa) Proof Load (MPa)
Carbon Steel 1050 200 - 300 650 min 500
Stainless Steel A2 210 - 280 500 min 400

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