PC Flat washer
PC Flat washer are a type of non-metallic fastener renowned for their unique optical transparency, high impact resistance, and excellent dielectric properties.
M Size: M3-M30
peek plastic material: PC Polycarbonate
product type: Washers
color: Natural/Black/Other Colors(Customizable)
Search
Product type
Get A Quote
PC Flat washer Overview
PC Flat Washer is a type of non-metallic washer made from Polycarbonate (PC), an amorphous thermoplastic known for its outstanding combination of impact resistance, optical clarity, and structural strength.
Product Parameters
PC Flat Washers typically adhere to established metric standards for plain washers, such as ISO 7089 (Non-chamfered) or ISO 7090 (Chamfered), with dimensions defined by the inner diameter (ID), outer diameter (OD), and thickness (T).
| Nominal Size (Bolt d) | Inner Diameter (ID) | Outer Diameter (OD) | Thickness (T) |
| M2 | 2.2 mm | 5.0 mm | 0.5 mm |
| M2.5 | 2.7 mm | 6.0 mm | 0.5 mm |
| M3 | 3.2 mm | 7.0 mm | 0.5 mm |
| M4 | 4.3 mm | 9.0 mm | 0.8 mm |
| M5 | 5.3 mm | 10.0 mm | 1.0 mm |
| M6 | 6.4 mm | 12.0 mm | 1.6 mm |
| M8 | 8.4 mm | 16.0 mm | 1.6 mm |
| M10 | 10.5 mm | 20.0 mm | 2.0 mm |
Key Features
Polycarbonate gives the washer its distinctive high-value features:
- High Impact Strength and Toughness: PC is renowned for its PC High Impact Washer properties, offering exceptional durability and resistance to breakage, superior to most other standard engineering plastics (like Acrylic or standard Nylon).
- Optical Clarity: The washer is naturally transparent (relevant to Clear Plastic Washer searches), a feature essential for applications involving light transmission, visual inspection, or aesthetic requirements.
- Excellent Electrical Insulation: PC is an exceptional dielectric material, making it a reliable PC Electronic Insulation Washer for sensitive electronic assemblies.
- Dimensional Stability and Low Water Absorption: Unlike hygroscopic materials like Nylon (PA66), Polycarbonate exhibits excellent Polycarbonate Dimensional Stability with minimal moisture uptake, making it reliable across varying humidity levels.
- Temperature Stability: PC maintains its rigidity and properties over a wide operating range, making it suitable across various environments (relevant to PC Washer Temperature Limit searches).
Key Polycarbonate (PC) Properties
Applications
PC Flat Washer is utilized in specialized areas where its combination of toughness and transparency is mandatory:
- LED Lighting and Signage: Used as a spacer to isolate PCBs or wiring from metal fixtures while allowing maximum light transmission and providing high resistance to accidental impact (PC Washer LED Lighting).
- Electronic Devices and Components: Applied as an insulating spacer (PC Spacer Washer) in appliances, computers, and sensors where shock resistance and electrical isolation are required.
- Glazing and Panels: Used in mounting screws for transparent shields, windows, and panels (relevant to Polycarbonate Glazing Washer), where its high impact strength prevents cracking under screw pressure.
- Automotive and Transportation: Utilized in non-structural assemblies, especially around sensors, instrument panels, and light fixtures, where impact resistance is a priority (PC Washer Automotive).
Advantages&Disadvantages
| Category | ✅ Advantages (Pros) | ❌ Disadvantages (Cons) |
| Performance | Extreme Impact Resistance: Unmatched toughness among common plastic washers. High Clarity: Excellent transparency for visual applications. | Chemical Vulnerability: PC is susceptible to degradation from certain solvents and bases, limiting its use in specific chemical environments. |
| Strength | Good mechanical strength, stiffness, and resistance to creep, superior to flat washer nylon under load. | Scratch Resistance: PC surfaces are relatively soft and easily scratched, which can impair clarity over time. |
| Protection | Reliable Electrical Insulation and good thermal stability. | UV Degradation: Standard PC can yellow and become brittle with prolonged, direct exposure to UV light unless UV stabilized. |
| Comparison | Better toughness and higher service temperature than Acrylic. Solves the lock washer vs flat washer dilemma in applications needing high impact resistance. | Torque/Clamping: As a polymer, it still requires controlled installation torque to prevent crushing or deformation, unlike a metal flat lock washer. |
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.