PA66 Slotted knurled screw
PA66 Slotted knurled screw has excellent wear resistance and oil resistance, and it is self-extinguishing (UL94V-2). It is not resistant to strong acids and has high water absorption.
M Size: M3-M8
peek plastic material: Polyamide66（PA66）
product type: Pan head bolts
color: Natural/Black/Other Colors(Customizable)
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PA66 Slotted knurled screw Overview
PA66 (Polyamide 66, or Nylon 66) Slotted Knurled Screw is a specialty plastic fastener combining the toughness and rigidity of Nylon 66 with an ergonomic head design for tool-free, manual operation. The knurled circumference allows for easy finger-tightening and quick release, making it ideal for assemblies requiring frequent, non-critical access or adjustment.
I. Overview and Design
| Feature | Detail | Purpose |
| Material (PA66) | Polyamide 66 (Nylon 66). A strong, durable engineering plastic known for high toughness and excellent electrical insulation. | Provides a robust, wear-resistant material that is non-corrosive and non-conductive. |
| Head Style (Knurled) | Features vertical or diagonal ridges around the circumference. | Enables quick, comfortable finger-tightening and adjustment without the need for tools. |
| Drive Style (Slotted) | Includes a single slot on the top surface. | Provides an optional means for tool-based final securing or removal using a flat-blade screwdriver. |
| Application | Low-stress fastening and quick-access panels in electronics, appliances, and instruments. | Ideal for use where frequent, manual adjustment is needed and high torque is unnecessary. |
Product Parameters
Below are representative dimensions for common PA66 Slotted Knurled Screws:
| Nominal Diameter (d) | Thread Pitch (P) | **Typical Head Diameter (D) ** | **Typical Head Height (K) ** | Common Lengths (L) |
| M3 | 0.5 mm | 8.0 mm | 6.0 mm | 6 mm to 20 mm |
| M4 | 0.7 mm | 10.0 mm | 7.0 mm | 8 mm to 30 mm |
| M5 | 0.8 mm | 12.0 mm | 8.0 mm | 10 mm to 40 mm |
| M6 | 1.0 mm | 14.0 mm | 9.0 mm | 12 mm to 50 mm |
Key Features
PA66 Knurled Screws are valued for their combination of material durability and user convenience:
Tool-Free Operation: The primary benefit is quick, manual assembly and disassembly, saving time and eliminating the need for specific tools.
High Toughness: PA66 provides excellent resistance to chipping, cracking, or breakage, which is important for frequently handled components.
Electrical Insulation: Superior dielectric properties make it safe for securing electrical covers and components.
Abrasive Resistance: Good resistance to wear ensures the threads and knurling remain intact over repeated use.
Corrosion Immunity: Will not rust or corrode, suitable for damp environments.
Key Polyamide Nylon (PA6) Properties
Applications
PA66 Slotted Knurled Screws are essential in applications requiring quick access, adjustment, and electrical safety:
Electronics and Control Panels: Securing quick-release battery covers, access panels, and cable management components.
Laboratory Equipment: Used as adjustable stops, clamps, or mounts on instruments where frequent repositioning is needed.
Appliance Manufacturing: Fastening internal or external covers that consumers may need to remove (e.g., filter access panels).
Display and Instrumentation: Securing calibration points, display screens, or adjustable fixtures on machinery.
Advantages
| Category | Advantage (Pro) | Disadvantage (Con) |
| Usability | Extremely fast and easy adjustment/removal. Comfortable, tool-free manual grip. | Low Clamping Force: Designed for low torque; unsuitable for high-load structural assemblies. |
| Material | High toughness and mechanical strength for a non-reinforced polymer. Cost-effective. | Moisture Absorption: Nylon absorbs water, which can lead to slight dimensional changes and reduce strength over time. |
| Design | Knurled head offers superior grip. Slotted drive provides tool backup. | Limited Chemical Resistance: Susceptible to strong acids, bases, and oxidizing agents. |
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.