White Nylon Pan Head Phillips Machine Screws M4 M5 M6 — Non-Conductive PA66 Plastic Screws for Electronics, Aquariums & Chemical Environments
Metal screws corrode in wet and chemical environments, create electrical hazards in live assemblies, and contaminate sensitive systems. These white nylon PA66 pan head Phillips machine screws in M4, M5, and M6 eliminate those risks: fully non-conductive, corrosion-resistant in moisture and most chemicals, and lightweight — the standard choice for aquarium equipment, water treatment systems, electrical enclosures, and any application where metal fasteners are not suitable.
The pan head profile provides a wide, flat bearing surface that distributes clamping force evenly across panels and housings without digging in. Available in lengths from 6mm (0.24”) to 50mm (1.97”) and pack sizes from 5 to 200 pieces. The white color suits clean-room, food-safe, and light-colored assemblies where black fasteners would be visually inappropriate.
Typical applications include aquarium and water treatment equipment fastening, electrical enclosure and panel assembly where metal screws would create short-circuit risk, chemical processing equipment, food-safe and clean-room assemblies, and general DIY projects where corrosion resistance and electrical isolation are required.
🔗 Compatibility: ISO metric thread — M4, M5, M6. Phillips PH2 drive. Compatible with M4/M5/M6 tapped holes, metric hex nuts, and threaded inserts. Requires pre-tapped hole — not self-tapping.
⚠️ Note: Nylon screws have lower torque limits than metal. Do not overtighten — hand-tight plus a quarter turn is typically sufficient. Do not use a power driver at high torque settings. Screw length is measured excluding the head. Not all length options are available for every diameter — check the variant, selector.
✅ Key Features of These White Nylon Pan Head Phillips Machine Screws M4–M6
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🔩Nylon PA66 Material — Engineering-grade polyamide; durable, lightweight, and non-conductive — eliminates corrosion, galvanic reaction, and electrical hazard risks in sensitive assemblies.
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⚡Electrically Non-Conductive — Fully insulating; the standard choice for electrical enclosures, PCB mounting, and assemblies where metal fasteners would create short-circuit or leakage risk.
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💧Corrosion & Chemical Resistant — Resistant to moisture, mild acids, and many chemicals; suitable for aquariums, water treatment equipment, and chemical processing environments where metal screws would corrode.
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🎯Pan Head Profile — Wide, flat bearing surface distributes clamping force evenly; low-profile head suits panels, plastic housings, and electronics enclosures without digging in.
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📐M4, M5, M6 in Multiple Lengths — 6mm (0.24”) to 50mm (1.97”); covers short panel-mount screws through longer structural applications for M4–M6 nylon fasteners.
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📦Packs of 5 to 200 — Order a small quantity for a specific repair or stock up with 100–200 pieces for production and workshop use.
📐 Technical Specifications — White Nylon Pan Head Phillips Machine Screws M4–M6
| Material |
Nylon PA66 (Polyamide 66) |
| Color |
White |
| Thread Standard |
ISO Metric |
| Thread Diameters |
M4, M5, M6 |
| Head Style |
Pan Head (Round Head) |
| Drive Type |
Phillips PH2 |
| Available Lengths (M4) |
6mm (0.24”), 8mm (0.31”), 10mm (0.39”), 12mm (0.47”), 15mm (0.59”), 20mm (0.79”), 25mm (0.98”), 30mm (1.18”), 35mm (1.38”), 40mm (1.57”) |
| Available Lengths (M5) |
8mm (0.31”), 10mm (0.39”), 12mm (0.47”), 15mm (0.59”), 20mm (0.79”), 25mm (0.98”), 30mm (1.18”), 35mm (1.38”), 40mm (1.57”), 50mm (1.97”) |
| Available Lengths (M6) |
8mm (0.31”), 10mm (0.39”), 12mm (0.47”), 16mm (0.63”) |
| Pack Sizes |
5 / 10 / 20 / 30 / 50 / 100 / 200 pcs |
| Screw Type |
Machine screw (requires tapped hole or nut) |
| Length Measurement |
Excluding head (shaft length only) |
| Electrical |
Non-conductive (fully insulating) |
| Corrosion Resistance |
Excellent — moisture, mild acid, and chemical resistant |
| Common Applications |
Aquariums, water treatment, electrical enclosures, chemical processing, clean-room assemblies, food-safe fixtures |
❓ Frequently Asked Questions
How do I choose the right screw length?
Measure the depth of the tapped hole or the thickness of the material being clamped. The screw length (excluding head) should engage at least 1.5× the thread diameter — at least 6mm for M4, 7.5mm for M5, and 9mm for M6. Available lengths: 6mm (0.24”) to 50mm (1.97”) depending on the diameter. When in doubt, size up.
What material are these screws made from?
Engineering-grade nylon (PA66 / Polyamide 66) — durable, lightweight, non-conductive, and corrosion-resistant. PA66 is the standard material for plastic fasteners in electronics, chemical processing, aquatic, and food-safe applications.
Are nylon screws electrically insulating?
Yes. Nylon is a non-conductive material, making these screws ideal for electrical enclosures, PCB mounting, and any application where electrical isolation is required. They eliminate the short-circuit and galvanic corrosion risks associated with metal fasteners in live assemblies.
Are these suitable for wet, chemical, or aquarium environments?
Yes. Nylon PA66 is corrosion-resistant and moisture-resistant, making it suitable for aquariums, water treatment equipment, chemical processing environments, and any application where metal screws would corrode. Prolonged UV exposure may cause gradual degradation — for long-term outdoor use, consider UV-stabilized nylon variants.
What screwdriver do I need?
A Phillips PH2 screwdriver for M4–M6. Apply moderate torque only — nylon screws have lower torque limits than metal and can strip if overtightened. Hand-tight plus a quarter turn is typically sufficient. Do not use a power driver at high torque settings.
How strong are nylon screws compared to metal?
Nylon PA66 has a tensile strength of typically 70–85 MPa — significantly lower than steel or stainless steel. These screws are designed for light-to-medium clamping loads in electronics, panels, and plastic assemblies, not for structural or high-load applications. Do not overtighten.
Do these require a tapped hole or nut?
Yes — these are machine screws, not self-tapping. They require a pre-tapped M4/M5/M6 hole or a matching metric nut. They will not cut their own thread into plastic or metal.
What pack sizes are available?
Available in packs of 5, 10, 20, 30, 50, 100, and 200 pieces. Larger packs offer better per-unit value for production runs and workshop stock. Select your preferred quantity using the Pack Quantity option above.
🛒 Select your thread diameter, length, and pack quantity above, then add to cart — ships from our US warehouse.