PA66 Flat washer

PA66 Flat washer Overview

A66 Flat Washer (Polyamide 66 or Nylon 66 Flat Washer) is one of the most common polymer fasteners globally. It is prized for the unique combination of the robust mechanical properties of Nylon 66 with excellent electrical insulation, chemical resistance, and significant cost advantages over many metals.

Key Features

PA66 Flat Washer’s value is derived from the intrinsic properties of Nylon 66:

• Excellent Electrical Insulation: PA66 is a superb dielectric material, making it a reliable PA66 Electrical Insulation Washer. It is essential for isolating dissimilar metals to prevent galvanic corrosion and for separating electronic conductors.
• Corrosion and Chemical Resistance: The washer is completely immune to rust and exhibits strong Nylon Washer Corrosion Resistant properties against common oils, greases, solvents, and weak bases, suitable for most fluid environments.
• Mechanical Strength and Toughness: PA66 offers good toughness and abrasion resistance, serving well to distribute loads and protect soft surfaces (relevant to Nylon Washer Soft Material Protection).
• Lightweight: As a plastic component, it provides a significant PA66 Washer Lightweight advantage over steel or brass, essential for weight-sensitive applications.
• Damping Properties: The polymer structure naturally provides good shock and noise absorption (Plastic Washer Anti-Vibration).

Key Polyamide Nylon (PA6) Properties

Applications

PA66 Flat Washer is used across industries where non-conductivity, corrosion resistance, and load distribution are required:

• Electronics and Electrical Systems: Utilized extensively as an insulating spacer (PA66 Spacer Washer) in appliances, wiring harnesses, circuit boards, and control panels.
• Marine and Outdoor Environments: Due to its immunity to water and salt, it is essential for use in boats, docks, and external signage (relevant to PA66 Washer Marine Application).
• Automotive Industry: Used for mounting trim, securing plastic components, and protecting sensitive sensors and wires within the vehicle (relevant to PA66 Washer Automotive).
• General Machinery and Plumbing: Applied in pumps, filters, and light mechanical assemblies where vibration damping and chemical resistance are necessary.

Advantages&Disadvantages

✅ Advantages (Pros)

1. Reliable Electrical Isolation: Safely separates electrical components and prevents galvanic corrosion between dissimilar metals.
2. Corrosion Proof: Absolute immunity to rust, excellent resistance to many common chemicals and solvents.
3. Cost-Effectiveness: High-volume molding makes it highly economical (PA66 Washer Price per 1000) compared to specialty metal washers.
4. Lightweight and Durable: Provides weight reduction and good resistance to abrasion and impact.
5. Damping: Absorbs shock and reduces assembly noise.

❌ Disadvantages (Cons)

1. Moisture Sensitivity (Hygroscopic): PA66 absorbs moisture from the atmosphere. This affects Nylon Washer Dimensional Stability, potentially causing the washer to swell slightly and changing its mechanical properties.
2. Limited Torque/Clamping Force: It has a much lower modulus than metal. Applying excessive torque risks permanent deformation or “dishing” the washer.
3. Creep Tendency: Under high, constant pressure, PA66 is susceptible to PA66 Washer Creep Resistance failure, meaning it can permanently deform over time, leading to joint loosening.
4. UV Sensitivity: Without special UV stabilizers, Nylon Washer UV Resistance is poor, leading to degradation and yellowing upon prolonged exposure to sunlight.

Packaging & Delivery

Standard packaging includes PE bag, foam cover, and one double-deck corrugated outer carton for safety during transit. Delivery time is 5-15 working days depending on the quantity.