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Metal microscrews in PCB assemblies, optical instruments, and precision electronics create real risks — short circuits, galvanic corrosion, and contamination of sensitive surfaces. These white nylon PA66 pan head Phillips machine screws in M2, M2.5, and M3 eliminate those risks: fully non-conductive, corrosion-resistant, and lightweight — the standard choice for PCB mounting, optical equipment, clean-room assemblies, and any precision application where metal fasteners are not suitable.
The pan head profile provides a wide, flat bearing surface that distributes clamping force evenly across PCB surfaces and thin panels without digging in. Available in lengths from 4mm (0.16”) to 30mm (1.18”) and pack sizes of 20, 40, 60, and 100 pieces. The white color suits clean-room, medical, optical, and light-colored assemblies, where black fasteners would be visually inappropriate or where color-coding is used to identify fastener type.
Typical applications include PCB standoff and component mounting (M2–M3), optical instrument and camera assembly (M2–M2.5), medical device and clean-room fastening, electrical enclosure assembly where metal screws would create short-circuit risk, and precision DIY projects where electrical isolation and a clean white finish are both required.
| Material | Nylon PA66 (Polyamide 66) |
|---|---|
| Color | White |
| Thread Standard | ISO Metric |
| Thread Diameters | M2, M2.5, M3 |
| Head Style | Pan Head (Round Head) |
| Drive Type | Phillips — PH0 (M2–M2.5) / PH1 (M3) |
| Available Lengths | 4mm (0.16”), 5mm (0.20”), 6mm (0.24”), 8mm (0.31”), 10mm (0.39”), 12mm (0.47”), 15mm (0.59”), 20mm (0.79”), 25mm (0.98”), 30mm (1.18”) |
| Pack Sizes | 20 / 40 / 60 / 100 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 — no rust, no galvanic corrosion |
| Common Applications | PCB mounting, optical instruments, medical devices, clean-room assemblies, electrical enclosures, precision DIY |
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 3mm for M2, 3.75mm for M2.5, and 4.5mm for M3. Available lengths: 4mm (0.16”) to 30mm (1.18”). When in doubt, size up.
Engineering-grade nylon (PA66 / Polyamide 66) — durable, lightweight, non-conductive, and corrosion-resistant. PA66 is the standard material for plastic fasteners in electronics, PCB, optical, and precision instrument applications.
Yes. Nylon is a non-conductive material, making these screws ideal for PCB mounting, electrical enclosures, and any application where electrical isolation is required. They eliminate the short-circuit and galvanic corrosion risks associated with metal fasteners in precision assemblies.
White nylon screws are preferred in clean-room assemblies, medical devices, food-safe equipment, optical instruments, and light-colored housings where black fasteners would be visually inappropriate. White is also commonly used for color-coding to identify fastener type or material in multi-fastener assemblies.
A Phillips precision screwdriver: PH0 for M2–M2.5, PH1 for M3. 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.
Nylon PA66 has a tensile strength of typically 70–85 MPa — significantly lower than steel or stainless steel. These screws are designed for light clamping loads in PCB, optical, and precision assemblies, not for structural or high-load applications. Do not overtighten.
Yes — these are machine screws, not self-tapping. They require a pre-tapped M2/M2.5/M3 hole or a matching metric nut. They will not cut their own thread into plastic or metal.
Available in packs of 20, 40, 60, and 100 pieces. Larger packs offer better per-unit value for production runs and workshop stock. Select your preferred quantity using the Pack Quantity option above.
