M3 x 8mm Phillips Flat Head Countersunk Machine Screws Zinc Silver 10-Pack for RC & 3D Printers
Bulk Discounts
| Quantity | Price per unit |
|---|---|
| Buy 1 – 49 pcs | $4.99 /each |
| Buy 50 – 499 pcs | $4.49 /each |
| Buy 500 – 999 pcs | $3.99 /each |
| Buy 1000 – 2499 pcs | $3.49 /each |
| Buy 2500 – 4999 pcs | $2.99 /each |
| Buy 5000 + pcs | $2.50 /each |
M3 x 8mm Phillips Flat Head Countersunk Machine Screws Zinc Silver 10-Pack for RC & 3D Printers is backordered and will ship as soon as it is back in stock.
- Free US shipping $25+
- Ships within 24h (Mon–Sat) from South Carolina, tracked; US delivery 1–5 business days after dispatch
- 30-day returns
How many packs?
Free US shipping on orders of $25+. Under $25, shipping is calculated at checkout.
Size M3 x 0.5mm (metric coarse) · 8mm overall (includes the head) · Flat Head, Countersunk 90° · 10 Screws
Not sure? Compare with the screw size chart or ask us before you order.
Fit check before you order (30 seconds)
- Thread M3 = the threaded shank is 3 mm across. Hold the old screw against a ruler or use calipers; M2, M2.5 and M3 look alike but do not swap.
- Length 8 mm is measured from under the head to the tip (flat heads sit flush, so compare like with like). Too long can hit parts behind the hole.
- Same device? Check the model in the title and the Fits list above against the label on your device.
Still unsure? Send us a photo of the screw next to a ruler and the device model.
M3 x 8mm Phillips Flat Head Countersunk Machine Screws | Zinc Plated Silver | 10-Pack
10 M3 x 8mm Phillips flat head machine screws to DIN 965: metric M3 x 0.5mm coarse thread, 90° countersunk head that sits flush, class 4.8 steel with clear (silver) zinc plating. For RC models, 3D printers, electronics enclosures, mounts and laptop or device repairs that use a countersunk M3 screw.
Why the Right Screw Matters
A flat head screw has to match three things: the thread, the overall length and the 90° head. Too long and it can bottom out or touch a board; too short and it will not hold; the wrong head sits proud or pulls through.
- Wrong thread (M2 vs M2.5 vs M3): stripped holes and inserts
- Wrong length: punctured parts or loose panels
- Pan or wafer head in a countersunk hole: the head sticks up and snags
What You Get
- 10 x M3 x 8mm Phillips flat head (countersunk) machine screws
- Clear zinc plated (trivalent, RoHS) carbon steel, class 4.8; magnetic
- Brand new
How to Check Your Screw
- Thread: M3 measures about 2.9-3mm across the threads; pitch 0.5mm.
- Length: on a flat head screw, measure from the top of the head to the tip: 8mm.
- Head: cone-shaped, 5.6mm across, sits flush in a 90° countersink. If your original is flat underneath (pan or wafer head), this is not the right screw.
- Driver: Phillips PH1.
Specifications
- Screw Type: Machine Screw
- Thread Size: M3 x 0.5mm (metric coarse)
- Length: 8mm overall (includes the head)
- Head Style: Flat Head, Countersunk 90°
- Head Diameter: 5.6mm max; head height 1.65mm
- Drive Style: Phillips PH1
- Standard: DIN 965 (ISO 7046 equivalent)
- Material: Steel, property class 4.8
- Finish: Clear zinc plated (Cr3+, RoHS)
- Color: Silver
- Pack Quantity: 10 Screws
- Country of Origin: China
Important: Please verify your thread size before ordering. M3 screws are not interchangeable with other M sizes.
Fits / replaces flat head screws in
Each row comes from a parts list, manual or maker's spec that calls for an M3 x 8mm countersunk (flat head) screw. Where the original has a hex or Torx drive, this Phillips screw has the same thread, length and head shape.
| Device / model | Where the screw goes | Source |
|---|---|---|
| Traxxas T-Maxx, E-Maxx, Revo and Jato RC trucks | 3x8mm countersunk machine screws (Traxxas 2550; the original is hex drive) | tuah.wrekd.com |
| Voron StealthChanger toolhead backplates | m3x6 or m3x8 flat head countersunk screws that must be magnetic (no stainless) for Tap; these zinc-plated steel screws are magnetic | github.com |
| Open red dot sights on adapter plates (airsoft and optics) | M3 flat head screws in the M3x7.5 to M3x10 range fix the sight to the mount; M3x8 is a common length | redwolfairsoft.com |
The same M3 x 8mm size is also called out in (check the head first)
These service documents list an M3 x 8mm screw, but the original head may be a pan, wafer or cap head. A flat head only sits flush in a countersunk (cone-shaped) hole, so compare with the screw you removed.
- HP LaserJet 9000 / 9040 / 9050 printers: parts list: Screw, M3 by 8 (XA9-1200-000CN) (qcs1.com)
- Bixolon SRP-B300II receipt printer: cover, frame and mechanism screws M3x4 / M3x6 / M3x8 (bixolon.com)
- TSC MH241 / MH341 / MH641 label printers: parts list machine screws M3*5, M3*6, M3*8 (tsc-drucker.com)
- Vivotek IT9389-H dome camera: camera-to-bracket screws on the AM-21M mount (vivotek.com)
- Verifone P400 PIN pad: front mounting plate screws (onlinehelp.ncrvoyix.com)
- Star Micronics mPOP under-counter mount CM-POP1: mount frame to the mPOP (starasia.com)
- QualGear QG-KIT-VA-3IN-B projector mount kit: universal plate hardware (media.digikey.com)
- Hammond 1591 / 1555 enclosures: M3-0.5 x 8mm panel and PCB mounting screw (Hammond 1591MM100) (media.ic-find.com)
What does an M3 x 8mm flat head screw fit?
Sources that call for an M3 x 8mm countersunk (flat head) screw include: Traxxas T-Maxx, E-Maxx, Revo and Jato RC trucks; Voron StealthChanger toolhead backplates; Open red dot sights on adapter plates (airsoft and optics). Measure your original screw first: M3 thread, 8mm long measured from the top of the head, cone-shaped head.
Common Applications & Use Cases for Metric Screws
Common Applications & Use Cases for Metric Screws
Computers, Laptops & Electronics
- Laptop bottom covers and chassis fastening
- Laptop hinge mounting and reinforcement
- Keyboard plate and PCB mounting
- SSD and M.2 drive installation
- Motherboard standoff and component mounting
- Cooling fan and heatsink attachment
- Graphics card shroud and bracket screws
- Power supply housing fasteners
- Monitor stand and VESA mounting hardware
Keyboards, Gaming & Accessories
- Mechanical keyboard case assembly
- Keyboard PCB and plate mounting
- Switch plate reinforcement
- Custom keyboard builds and repairs
- Gaming controller housing screws
- Mouse shell and internal component fastening
Audio, Video & Camera Equipment
- Audio amplifier enclosure screws
- Speaker cabinet mounting hardware
- Microphone housing and clip fastening
- Camera body and accessory mounting
- Tripod plate and quick-release adapters
- AV rack and equipment chassis screws
Home Appliances & Small Devices
- Coffee machine internal fasteners
- Vacuum cleaner housing screws
- Small kitchen appliance assembly
- Smart home device mounting
- Router and modem casing screws
- Printer and scanner component fastening
Furniture, Fixtures & Home Hardware
- Cabinet hinges and drawer hardware
- Furniture frame assembly
- Bed frame brackets and supports
- Door handles and locksets
- Light fixture mounting screws
- Wall-mounted accessories and brackets
Automotive, Powersports & Mobility
- Interior trim and dashboard components
- License plate brackets
- Motorcycle fairings and panels
- Bicycle accessories and components
- Car audio and dash installations
- Electric scooter and e-bike assemblies
Industrial, Commercial & Workshop Use
- Control panel enclosures
- Electrical junction boxes
- Equipment housings and covers
- Small machinery guards
- Industrial electronics mounting
- Maintenance and repair hardware
DIY, Repair & General Hardware
- Electronics repair projects
- Prototyping and hobby builds
- Replacement for lost or stripped screws
- Custom fabrication projects
- 3D-printed part assembly
- General fastening where precision is required
Miscellaneous & Specialty Uses
- Robotics and automation projects
- RC cars, drones, and hobby equipment
- Educational STEM kits
- Test fixtures and lab equipment
- Custom enclosures and cases
How to Choose the Correct Screw
How to Choose the Correct Screw
Selecting the correct screw is important for proper fit, strength, and long-term reliability. Before ordering, confirm the following:
Screw Size (Diameter)
Measure the outer thread diameter of the screw. Metric screws are labeled in millimeters, such as M2, M2.5, or M3.
Length
Measure from under the head to the tip of the screw unless otherwise specified by the head style.
Thread Type
Ensure the thread matches the receiving material. Most electronics and hardware applications require metric machine threads rather than self-tapping threads.
Head Type
Confirm the head style needed for proper seating, such as flat head, pan head, or button head.
Drive Type
Match the drive type (Phillips, Torx, Hex, etc.) to the tools you plan to use and the torque requirements of the application.
Material & Finish
Choose the appropriate material and finish based on strength, corrosion resistance, and environmental conditions.
If you are replacing an existing screw, we recommend removing one and comparing the diameter, length, and head type directly before ordering to ensure a proper fit.
Frequently Asked Questions
Frequently Asked Questions
Are these screws metric or imperial?
These are metric screws. Metric screws are measured in millimeters and are commonly used in electronics, laptops, keyboards, and precision hardware.
How is screw length measured?
Screw length is measured from under the head to the tip of the screw, unless otherwise specified by the head style.
Will these screws fit laptops, keyboards, or electronics?
Yes. These screws are commonly used in laptops, mechanical keyboards, SSD mounting, cameras, and other electronic devices. Always verify size and thread type before ordering.
Can these screws be used as replacements?
Yes. These screws are ideal replacements for lost or stripped screws in compatible devices. We recommend comparing one existing screw for best fit.
What tools are required to install these screws?
Installation typically requires a matching screwdriver based on the drive type, such as Phillips, Torx, or Hex. No special tools are required.
Delivery and Shipping
Delivery and Shipping
Usually Ships Within 24 Hours. All Orders Are Shipped With Tracking Numbers.
M3 x 8mm Phillips Flat Head Countersunk Machine Screws Zinc Silver ...
M3 x 8mm Phillips Flat Head Countersunk Machine Screws Zinc Silver 10-Pack for RC & 3D Printers is backordered and will ship as soon as it is back in stock.
We Accept
Frequently Asked Questions
What size is this screw?
Will this fit my device?
What material and finish is this?
How fast do you ship?
- Free US shipping on orders $25+
- Usually ships within 24 hours (Mon–Sat) from Elgin, SC, with tracking
- 30-day returns
- Questions? We reply within 24 hours
