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M3 Carbon Steel PC Case Thumb Screw — Slotted Phillips Head, 4.5–12mm
Standard M3 thumb screws for PC case panels, drive bays, and expansion slot covers. The combined slotted and Phillips head allows both hand tightening and screwdriver use. Available in black (black zinc plating) and silver (nickel plating) to match your build aesthetic.
Key Specifications
| Thread Size | M3 (metric, 0.5mm pitch) |
|---|---|
| Length Options | 4.5mm / 6mm / 8mm / 10mm / 12mm |
| Material | Carbon Steel |
| Head Style | Round knurled head with slotted + Phillips cross recess |
| Drive | Hand tighten / Slotted / Phillips (PH2) |
| Finish | Black zinc plating (black) / Nickel plating (silver) |
| Thread Type | Metric machine thread M3×0.5 |
| Origin | CN (Mainland China) |
Why Choose Keszoox M3 PC Thumb Screws?
- Dual-drive head — slotted + Phillips recess allows hand tightening or screwdriver use
- Standard M3 metric thread — compatible with most PC case standoffs, fan brackets, and panel mounts
- Two finish options — black zinc or silver nickel to match your build color scheme
- 5 length variants — 4.5mm to 12mm covers shallow panel mounts to deeper bracket applications
- Carbon steel construction — strong and durable for repeated installation and removal
Typical Applications
- PC case side panel and top panel fastening
- Expansion slot cover retention (GPU, PCIe cards)
- Fan bracket and radiator mounting
- HDD/SSD bracket and drive bay fastening
- DIY computer builds and case modding
- 3D printer frame and enclosure assembly
Compatible With
M3×0.5 metric threaded standoffs and captive nuts in: Fractal Design Define/Meshify, Corsair 4000D/5000D, NZXT H510/H710, Lian Li Lancool, Phanteks Eclipse, Cooler Master MasterBox, Antec P120, Thermaltake Core, and most ATX/Micro-ATX/Mini-ITX cases with M3 threaded mounting points.
FAQ
Q: What is the thread pitch for M3?
A: M3 standard metric thread has a pitch of 0.5mm. This is the most common thread size for PC case panels, fan mounts, and expansion slot covers.
Q: Can I use a screwdriver with these?
A: Yes. The head has both a slotted groove and a Phillips cross recess, so you can use a flat-head or PH2 Phillips screwdriver in addition to hand tightening.
Q: What is the difference between 4.5mm and 12mm lengths?
A: 4.5–6mm lengths are ideal for thin panel mounts (side panels, slot covers). 8–12mm lengths suit thicker brackets, fan mounts, or applications requiring more thread engagement.
Package Contents
- M3 Carbon Steel Thumb Screws (quantity and length per selected variant)


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