M1.6 & M1.7 Phillips Pan Round Head Machine Screws — Precision Micro Fasteners for Electronics & Fine Mechanics
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 machine screws are engineered for professionals and hobbyists who demand accuracy in every assembly.
Available in carbon steel (with your choice of bright nickel, black zinc, bright chrome, colored zinc, white zinc, blue white zinc, or glue-patched finishes), solid brass, or 304 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. Thread diameter M1.6 (1.6 mm / ~0.063 in) and M1.7 (1.7 mm / ~0.067 in), lengths from 1.5 mm up to 22 mm.
Typical use cases include watch and eyeglass repair, miniature RC models, consumer electronics assembly, precision optical instruments, and any ultra-compact mechanical assembly where standard screws are simply too large.
🔧 Electronics & PCB Assembly Technicians
Secure PCB standoffs, enclosure panels, and connector brackets in consumer electronics, IoT devices, and industrial control boards where M2 is too large and space is at a premium.
⌚ Watch & Eyeglass Repair Professionals
Replace worn or stripped micro screws in watch movements, eyeglass frames, and optical instruments. The pan head profile and precise thread pitch ensure a secure, non-damaging fit.
🎁 RC Model & Hobby Builders
Assemble miniature RC aircraft, drones, and scale models with confidence. Choose glue-patched variants for high-vibration applications to prevent loosening during operation.
💼 Precision Instrument & Medical Device Manufacturers
Use stainless steel or brass variants for corrosion-resistant, non-magnetic fastening in optical instruments, laboratory equipment, and medical device housings.
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 5 mm" screw has a 5 mm long threaded shaft under the head. All screws in this listing follow this standard measurement convention.
Are these screws fully threaded?
Yes — all M1.6 and M1.7 screws in this range (up to 22 mm) are fully threaded from under the head to the tip, giving you maximum grip in shallow holes or when used with a nut.
Will carbon steel screws rust? Which finish is best for outdoor use?
Carbon steel with nickel or zinc plating is suitable for indoor use and light moisture environments. For outdoor or humid conditions, choose 304 stainless steel — it is naturally rust-resistant. Brass is also corrosion-resistant but will develop a natural patina over time.
What screwdriver do I need for these tiny screws?
Use a #000 or #00 Phillips precision screwdriver. Standard household drivers are too large and will damage the head. Always match the bit size carefully to avoid cam-out and head stripping on these micro fasteners.
Can I use these screws with a nut? What size nut fits?
Yes — these are machine screws designed to work with nuts or tapped holes. Use standard metric nuts: M1.6 (0.35 mm pitch) or M1.7 (0.35 mm pitch). Nuts for these sizes can be harder to source; we recommend tapping the receiving hole directly for the most secure and compact assembly.
What does "with glue" or "glue-patched" mean? When should I choose that option?
A nylon or adhesive patch is bonded to the threads (similar to NYLOK). It increases friction and prevents the screw from vibrating loose over time. Choose this option for drones, power tools, RC models, or any high-vibration environment where standard screws may back out.
What is the difference between M1.6 and M1.7 screws? Are they interchangeable?
M1.6 has a thread diameter of 1.6 mm and M1.7 has a thread diameter of 1.7 mm. Both use a 0.35 mm pitch, but they are NOT interchangeable — the thread diameters differ and forcing one into the other's tapped hole will strip the threads. Always match the screw to the correct tapped hole size.
What do the head diameter variants (e.g., D=2.5, D=3, D=3.2) mean?
Some length options are available with different head diameters (e.g., M1.6 x 4 mm D=2.5 vs M1.6 x 4 mm D=3.2). The "D=" value refers to the outer diameter of the pan head in millimeters. Choose the head diameter that fits your counterbore or surface clearance requirement. If unsure, contact us to confirm before ordering.
Need a specific size, material, or quantity not shown? Contact us — we carry an extensive range of micro fasteners and can help you find the exact specification for your project.
