A
Anonymous
Mar 21, 2026
Rating: 4/5
Good Value
Solid screws for the price. One head stripped slightly under high torque, but overall satisfied.
Description
KA black zinc countersunk self-tapping screw GB846 black flat head Phillips self-tapping screw M2 M2.5 M3 M4 M5 M6
Reviews
Attributes
| Brand | - |
| Category | Industrial Small Parts / Connectors and Fasteners |
| Origin | - |
| Material | Carbon Steel |
| Finish | Black Oxide |
| Head Type | Flat Head (Countersunk) |
| Drive Type | Phillips (PH) |
| Thread Style | Self-Tapping |
| Industry Standard | GB846 |
| Size Options | M2, M2.5, M3, M4, M5, M6 |
| Hardness | HRC 45-50 |
| Package Count | 100 Pieces per Box |
| Suitable For | Metal, Plastic, Wood |
5 reviews
A
Anonymous
Mar 07, 2026
Rating: 5/5
Perfect Fit
Exactly what I needed for my electronics project. Threads cut cleanly into the aluminum chassis.
A
Anonymous
Feb 20, 2026
Rating: 4/5
Solid Coating
The black oxide coating looks professional. Good grip with a PH2 driver on the M4 sizes.
A
Anonymous
Feb 08, 2026
Rating: 5/5
Fast Shipping
Arrived quickly and well packaged. No rust or damage on any of the screws in the box.
A
Anonymous
Jan 31, 2026
Rating: 5/5
Great Quality Screws
Used these for a PC case mod and they fit perfectly. The black finish matches my components well.
5 FAQ
Q: Are these screws made of stainless steel?
A: No, these are made of carbon steel with a black oxide finish for corrosion resistance.
Q: Is there a bulk discount available?
A: Yes, please contact our sales team directly for pricing on orders over 50 units.
Q: Is the black oxide finish rust resistant?
A: Black oxide offers mild corrosion resistance. For outdoor use, we recommend additional coating.
Q: What driver bit size should I use?
A: We recommend PH1 for M2-M3 and PH2 for M4-M6 to prevent stripping.
Q: Do you sell these in M1 size?
A: Currently we stock sizes ranging from M2 to M6. M1 is not available at this time.
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