Colored aluminum alloy round flat washers are thin sheet components used in mechanical assembly, primarily for filling gaps, adjusting for misalignment, distributing pressure, or preventing loosening. The following is a detailed guide to their use, with details divided according to specific application requirements.
I. Product Overview
Material: Aluminum alloy (lightweight and corrosion-resistant, with a colored oxide layer for both aesthetics and rust prevention).
Type: Round flat washers (non-spring washers), with a smooth surface and uniform thickness.
Specifications: M3/M4/M5/M6/M8.
Applications: Filling assembly gaps, distributing pressure, preventing loosening, and adjusting tolerances.
II. Core Usage Scenarios
Gap Compensation (Key Point)
Problem: There is misalignment between the bolt and the hole.
Solution: Choose a washer with an inner diameter that matches the bolt (M5) and an outer diameter slightly larger than the hole to fill the radial gap.
Technique: Stacking multiple thin washers allows for fine-tuning of thickness.
Pressure distribution: Used for joining soft materials (plastics, wood) to prevent the bolt head from digging into the base material.
Anti-loosening aids: Use with spring washers (flat washers on the bottom, spring washers on the top) to reduce vibration and loosening.
Positioning and Insulation: Color coding distinguishes different sizes (e.g., red = M5, blue = M4); aluminum alloy insulation can be used in anti-static applications.
III. Installation Steps
Model Selection
Inner Diameter: Must strictly match the bolt diameter.
Outer Diameter: Must be larger than the contact surface, typically a standard size (M5 washers have an outer diameter of 9mm).
Thickness: Select based on the amount of clearance.
Assembly Process: Clean the bolt, nut, and contact surfaces.
Sequence: Bolt → Flat Washer → Workpiece → Nut. After manual pre-tightening, tighten with a wrench to a moderate torque to avoid deformation of the aluminum alloy.
Precautions for Multi-Layer Stacking: No more than three layers should be used to avoid cumulative tolerances; a single thick layer is preferred.
IV. Common Problems and Solutions
Slippage: Inner diameter too large → Replace with a precisely matching size.
Deformation: Over-torque tightening → Apply standard torque (e.g., 8-10 Nm for M5 bolts).
Corrosion: Avoid direct contact with copper and steel (insulating coating may be applied).
V. Selection Recommendations
Color: Based on assembly identification requirements (e.g., distinguishing between new and old parts during repair).
Alternative: Stainless steel washers are recommended for high-load applications.
Through proper selection and standardized installation, aluminum alloy flat washers can effectively address gap and pressure distribution issues in mechanical assembly while also improving aesthetics.
For further technical specifications or drawing templates, please contact us. This solution balances versatility with customization flexibility, making it suitable for quick integration into production.
When selecting, please note that aluminum alloy washers are not suitable for environments exceeding 150°C or for ultra-high-strength connections. It is recommended that they be used with a torque wrench for optimal preload results.
