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Product photography of the hex socket screws family. Item shown is a catalog representative; exact specification is confirmed with your quotation.
Countersunk Hex Socket Screws — Black Oxide
Countersunk (flat head) hex socket screws — flush seating with high-torque hex drive.
MOQ depends on specification — contact us · Quotation based on quantity and specification. Every inquiry is answered by a person.
Specifications
| Material | Carbon Steel |
|---|---|
| Finish | Black Oxide |
| Head type | Countersunk Hex Socket |
| Drive | Hex socket |
| Thread | Machine thread |
| Size range | Available sizes on request — depends on specification |
| Packaging | standard export packing — details with quotation |
| MOQ | MOQ depends on specification — contact us |
| Lead time | Depends on stock status and sourcing route — confirmed with your quotation |
Applications
- Housings needing flush heads
- Jigs and fixtures with countersunk seats
- Clean-looking machine surfaces
Technical notes
The head angle is standard 90°; the mating hole must be countersunk to match, otherwise the head sits proud and the seat misloads.
Countersunk Hex Socket Screws — Black Oxide — FAQ
Is 304 stainless magnetic?
Austenitic 304 is mildly magnetic after cold working. If magnetism or a specific grade matters for your project, tell us in the RFQ and we will confirm what can be documented.
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Related guides
Metric Screw Sizes & Thread Pitches (M2–M12 Quick Reference)
A plain table of the ISO metric coarse and fine pitches you will actually meet in small fasteners — plus tapping drill sizes, how to read an M-size callout, and the traps that cause wrong-thread orders.
Read →Self-Tapping vs Machine Screws: What's the Difference?
The thread decides everything — how each screw type grips, where each belongs, and why getting this one detail right saves the most rework.
Read →304 Stainless vs Carbon Steel Screws: Which Should You Buy?
Corrosion resistance, strength, appearance and price — a practical way to choose between stainless and plated carbon steel screws for your application.
Read →Understanding Screw Head Types — Pan, Flat, Socket Cap & More
Head geometry decides how a screw sits, spreads load and looks after assembly — a field guide to the head types in our catalog and when to use each.
Read →Request a quote
Countersunk Hex Socket Screws — Black Oxide
Send your sizes and requirements — quotation based on quantity and specification, with this category's context attached.
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