Black Oxide Hex Socket Flat Point Set Screw
Black oxide hex socket flat point set screw is a precision fastening component designed for secure positioning, torque transmission, and vibration-resistant locking in mechanical assemblies. The black oxide hex socket flat point set screw features an internal hex drive and flat point tip, providing reliable fastening without damaging the contact surface. It is widely used in machinery equipment, transmission systems, automation devices, tooling fixtures, and industrial assemblies where repeated adjustment and accurate positioning are required.
The black oxide hex socket flat point set screw combines the strength of carbon steel with a black oxide finish that enhances surface protection, reduces light reflection, and provides a clean industrial appearance.

Product Overview
The black oxide hex socket flat point set screw is engineered to secure rotating or stationary components such as shafts, collars, gears, pulleys, and couplings. Unlike cone point set screws, the flat point design distributes pressure over a larger contact area, minimizing surface indentation while maintaining stable holding force.
This black oxide hex socket flat point set screw is ideal for applications requiring repeated assembly and disassembly without damaging the mating surface. The internal hex drive allows higher tightening torque and reduces the risk of drive stripping.
As a widely used industrial fastener, it delivers dependable performance across precision mechanical systems and OEM equipment.
Product Specifications
| Item | Description |
|---|---|
| Standard | DIN913 / ISO 4026 |
| Product Name | Black Oxide Hex Socket Flat Point Set Screw |
| Material | Carbon Steel / Alloy Steel |
| Point Type | Flat Point |
| Head Type | Headless Set Screw |
| Drive Type | Internal Hex (Allen) |
| Thread Type | Metric Machine Thread |
| Diameter Range | M2–M24 |
| Length Range | 3mm–60mm |
| Surface Finish | Black Oxide |
| Strength Grade | 8.8 / 10.9 / 12.9 |
| Thread Direction | Right Hand |
| Packaging | Bulk / Small Box / OEM Packaging |
| Customization | Size, material, strength grade, coating, marking |
Technical Parameters
| Parameter | Value |
|---|---|
| Tensile Strength | 800–1,220 MPa (depending on grade) |
| Yield Strength | 640–1,100 MPa |
| Hardness | HRC 22–39 (depending on grade) |
| Density | 7.85 g/cm³ |
| Corrosion Resistance | Moderate (improved by black oxide treatment) |
| Operating Temperature | -40°C to 300°C |
| Thread Tolerance | 6g Standard |
| Manufacturing Standard | DIN913 / ISO 4026 |
Materials and Manufacturing Process
The black oxide hex socket flat point set screw is produced through precision manufacturing processes to ensure dimensional accuracy, mechanical strength, and consistent locking performance.
- Raw material selection: Premium carbon steel or alloy steel wire rod
- Cold heading: Forming the screw blank
- CNC machining: Precision flat point shaping where required
- Internal hex socket forming: Accurate drive recess production
- Thread rolling: High-strength thread forming for improved fatigue resistance
- Heat treatment: Quenching and tempering to achieve required strength grades
- Surface finishing: Black oxide treatment for corrosion protection and improved appearance
- Cleaning: Removal of oil and production residues
- Inspection: Thread accuracy, socket geometry, hardness, and dimensional verification
- Packaging: Export-grade protective packaging
Every black oxide hex socket flat point set screw is manufactured under strict quality control to ensure reliable fastening performance.
Applications of the Product
Black oxide hex socket flat point set screws are widely used in:
- Industrial machinery and equipment
- Shaft collars and couplings
- Gear and pulley positioning
- Automation equipment
- Machine tools and fixtures
- Conveyor systems
- Hydraulic and pneumatic equipment
- Electric motors and reducers
- OEM manufacturing systems
The flat point design provides secure positioning while minimizing damage to shafts and contact surfaces.
Why Choose This Product
- Flat point minimizes surface damage during tightening
- Internal hex drive supports higher installation torque
- High-strength carbon steel or alloy steel construction
- Black oxide finish improves appearance and corrosion resistance
- Excellent vibration resistance
- Suitable for repeated adjustment applications
- Multiple strength grades available
- Ideal for precision mechanical assemblies
- OEM and ODM customization supported
The black oxide hex socket flat point set screw offers reliable positioning and long-term fastening performance for industrial applications.
Why Choose Flybear
Flybear is a trusted manufacturer of industrial fasteners with extensive experience in supplying precision fastening solutions to global customers.
- Advanced cold heading and heat treatment facilities
- Precision thread rolling and socket forming technology
- OEM and ODM manufacturing capabilities
- Comprehensive inventory for fast delivery
- Strict ISO-compliant quality management system
- Engineering support for custom fastening solutions
- Reliable global supply chain and export experience
- Professional technical consultation for industrial projects
Flybear is committed to delivering high-quality fastening products that meet international industrial standards.
Quality Inspection and Control
Every batch undergoes comprehensive inspection, including:
- Chemical composition analysis
- Tensile strength testing
- Hardness testing
- Thread gauge inspection
- Internal hex socket inspection
- Dimensional measurement
- Surface finish inspection
- Packaging verification
All production complies with ISO quality management standards to ensure consistent product quality.
Selection Guide
When selecting a black oxide hex socket flat point set screw, consider:
- Required strength grade (8.8, 10.9, or 12.9)
- Thread size and engagement length
- Shaft material hardness
- Required holding force
- Operating environment and corrosion exposure
- Installation torque requirements
- Frequency of maintenance or adjustment
Selecting the correct specification improves equipment reliability and extends service life.
FAQ
1. What is a flat point set screw used for?
It is used to position and secure components while minimizing damage to the mating surface.
2. What is the difference between a flat point and a cone point set screw?
A flat point distributes pressure across a larger area, while a cone point penetrates the surface for stronger holding force.
3. What is the purpose of the black oxide finish?
It improves appearance, provides light corrosion resistance, and reduces surface reflection.
4. Can this set screw be reused?
Yes. If the threads and hex socket remain undamaged, it can be reused in most applications.
5. Can Flybear manufacture custom sizes or materials?
Yes. We provide OEM and ODM services for customized dimensions, materials, strength grades, and surface treatments.
We always adhere to the philosophy of quality first and customer first, providing customers with high-quality fastener products and one-stop fastener solutions.
For pricing, customization, or engineering assistance, please Contact Us.




