Description
Reviews
| Brand | - |
| Category | Industrial Small Parts / Connectors and Fasteners |
| Origin | - |
| Material | Hardened Carbon Steel |
| Thread Diameter | M4 (4mm) |
| Total Length | 120 mm |
| Head Style | Countersunk (Flat Head) |
| Drive Type | Phillips (PH2) |
| Standard | GB (Guobiao) |
| Surface Finish | Black Oxide |
| Tensile Strength | High Strength (Class 10.9 Equivalent) |
| Thread Type | Self-Tapping |
| Package Quantity | 50 Pieces |
Anonymous
Mar 15, 2026
Rating: 5/5
Strong and durable
Used them for heavy-duty switch assembly. No stripping on the Phillips head even under high torque. Very satisfied with the hardness.
Anonymous
Mar 10, 2026
Rating: 4/5
Solid fasteners
Head fits well with a standard PH2 driver. Slight variance in the black oxide finish on a couple of screws, but functionally perfect.
Anonymous
Mar 09, 2026
Rating: 5/5
Great length
120mm is hard to find in standard hardware stores. These fit perfectly through my chassis panels. Will buy again.
Anonymous
Feb 22, 2026
Rating: 4/5
Good quality, slow shipping
Steel is hard and threads cut well into aluminum. Only giving 4 stars because shipping took longer than expected, but the product itself is great.
Anonymous
Feb 18, 2026
Rating: 5/5
Perfect for my project
These screws are exactly what I needed for my metal enclosure build. The 120mm length is hard to find locally and the steel quality is excellent.
Q: Do you offer bulk discounts for larger orders?
A: Yes, please contact our sales team directly through the contact page for pricing on bulk quantities over 500 units.
Q: What driver size fits these screws best?
A: These screws are designed for a PH2 Phillips head driver. Using the correct size prevents cam-out and damage to the head.
Q: Is the thread running the full length of the screw?
A: Yes, these are fully threaded self-tapping screws from head to tip.
Q: Can these be used on aluminum profiles?
A: Yes, they are self-tapping and work well on aluminum. We recommend pre-drilling a pilot hole for best results.
Q: Are they rustproof for outdoor use?
A: The black oxide finish provides some corrosion resistance, but for harsh outdoor environments, we recommend applying additional coating.
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