🔩 M1.6 & M1.7 Phillips Pan Round Head Machine Screws – Carbon Steel, Brass or Stainless, Lengths 1.5–22mm
You’re working on a miniature electronic device, a precision instrument, or a delicate model – and you need tiny screws that are strong, non‑corrosive, and available in just the right size. These M1.6 and M1.7 Phillips pan round head screws come in carbon steel (with your choice of bright nickel, black zinc, chrome, or other finishes), solid brass, or stainless steel. The low, rounded pan head sits neatly on the surface and provides a wide bearing area without countersinking. Phillips drive works with precision screwdrivers. Fully threaded, with length measured under the head. Available in lengths from 1.5mm up to 22mm. Perfect for watches, eyeglasses, small appliances, RC models, and any ultra‑compact assembly.
✨ Key Features – M1.6 / M1.7 Pan Round Head Machine Screws
- 🔘 Pan round head design – Low profile, wide bearing surface. No countersinking needed – sits cleanly on the material.
- 📐
Phillips drive – Standard cross recess works with precision #0 or #00 screwdrivers. Good torque control.
- 🛡️ Multiple material choices – Carbon steel (various plated finishes), brass, or stainless steel. Match corrosion resistance and appearance to your project.
- 🎨 Wide finish selection – Bright nickel, black zinc, coloured zinc, white zinc, bright chrome, blue white zinc, and even glue‑patched versions for vibration resistance.
- 📏 Ultra‑small metric sizes M1.6 (1.6mm) and M1.7 (1.7mm) – Perfect for micro‑electronics, optics, and fine mechanics.
- 📐 Lengths from 1.5mm to 22mm (under head) – Example: M1.6 x 5mm means thread diameter 1.6mm, length from under head to tip is 5mm. Fully threaded.
- 💪 Precision threads, burr‑free surface – Clear, precise threads for even force distribution and smooth installation.
📏 Specifications – M1.6 & M1.7 Pan Round Head Screws (Selected Options)
| Thread Dia. |
Thread Pitch (mm) |
Typical Lengths (mm, under head) |
Material |
Finish Options |
| 📐 Length measured from underside of head to tip. Fully threaded. Many combinations available – select from dropdown. |
| M1.6 |
0.35 |
1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 12, 20, 22 |
Carbon steel |
Bright nickel, black zinc, coloured zinc, white zinc, bright chrome, blue white zinc |
| M1.6 |
0.35 |
3, 4, 5, 22 |
304 Stainless |
Natural (silver) |
| M1.6 |
0.35 |
20 |
Brass |
Natural |
| M1.7 |
0.35 |
2.5, 3, 4, 4.5, 5, 5.5 |
Carbon steel |
Black zinc, white zinc, bright nickel |
| M1.6 |
0.35 |
3, 4 |
Carbon steel with glue patch |
Black zinc or bright nickel + anti‑loosening patch |
* Many more combinations exist – if you don’t see your exact requirement, please contact us. Head diameter may vary by length; refer to dropdown for exact head dimensions.
📋 Choosing the Right Material & Finish
| Material / Finish |
Corrosion Resistance |
Best For |
| Carbon steel + bright nickel |
Good – indoor, light moisture |
Electronics, visible fasteners, general use |
| Carbon steel + black/coloured/white zinc |
Moderate – indoor |
Industrial, dark assemblies, cost‑effective |
| Carbon steel + bright chrome |
Good – shiny decorative |
Cosmetic applications, retro designs |
| 304 Stainless steel (natural) |
Excellent – outdoor, humid |
Marine, medical, outdoor electronics |
| Brass (natural) |
Good in fresh water, patinas |
Antique restoration, decorative, non‑magnetic |
| With glue patch (anti‑loosening) |
Same as base finish + vibration resistance |
High‑vibration devices (drones, power tools) |
❓ Frequently Asked Questions – M1.6 / M1.7 Pan Head Screws
1. How do I measure the length of a pan head screw?
For pan head screws, length is measured from the underside of the head (the flat bearing surface) to the tip. The head itself is NOT included. So an “M1.6 x 5mm” screw has a 5mm long threaded shaft under the head. All our lengths follow this standard.
2. Are these screws fully threaded?
Yes – all M1.6 and M1.7 screws in this range (up to 22mm) are fully threaded from under the head to the tip, giving you maximum grip in shallow holes or when using nuts.
3. Will carbon steel screws rust? Which finish is best for outdoors?
Carbon steel with nickel or zinc plating is suitable for indoor use. For outdoor or humid environments, choose stainless steel (304) – it’s naturally rust‑proof. Brass is also corrosion‑resistant but will patina over time.
4. What screwdriver do I need for these tiny screws?
Use a #000 or #00 Phillips precision screwdriver. Regular household drivers are too large. Always match the bit size to avoid cam‑out and head damage.
5. Can I use these screws with a nut? What size nut fits?
Yes – these are machine screws. Use standard metric nuts: M1.6 (0.35mm pitch) or M1.7 (0.35mm pitch). Nuts for these sizes are less common – we recommend tapping the hole directly for best results.
6. What does “with glue” mean? When should I choose that option?
A nylon or rubber patch is bonded to the threads (often called “NYLOK” or “glue”). It increases friction, preventing the screw from vibrating loose. Choose this for drones, power tools, or any high‑vibration environment.
