DIN915 316 Stainless Steel Cup Point Socket Set Screw
The din915 316 stainless steel cup point socket set screw is a high-precision fastening element designed for secure locking, positioning, and adjustment in mechanical assemblies. As a reliable industrial fastener, the din915 316 stainless steel cup point socket set screw provides strong holding force through its cup-shaped tip, which creates concentrated pressure on the contact surface for effective anti-loosening performance.
In modern engineering systems, the din915 316 stainless steel cup point socket set screw is widely used in machinery, instrumentation, automation equipment, and precision mechanical assemblies. Compared with standard stainless steel hex bolt solutions, this set screw is headless and designed for internal fastening, making it ideal for flush or concealed installation.

Product Overview
The din915 316 stainless steel cup point socket set screw is manufactured according to DIN915 standards, ensuring precise thread geometry and consistent mechanical performance. Made from high-quality 316 stainless steel, it offers excellent corrosion resistance, especially in marine, chemical, and high-humidity environments.
The cup point design of the din915 316 stainless steel cup point socket set screw provides strong gripping force, making it suitable for securing shafts, collars, pulleys, and internal components. It is widely used in OEM precision systems where space-saving and reliable locking are required.
As part of OEM fasteners and precision fastening systems, the din915 316 stainless steel cup point socket set screw ensures stable performance under vibration and load conditions.
Product Specifications
| Item | Specification |
|---|---|
| Standard | din915 |
| Product Name | din915 316 stainless steel cup point socket set screw |
| Material | 316 stainless steel |
| Screw Type | socket set screw |
| Point Type | cup point |
| Drive Type | internal hex (allen) |
| Thread Type | metric coarse thread |
| Diameter Range | m3 – m20 |
| Length Range | 3 mm – 80 mm |
| Surface Finish | natural stainless steel |
| Strength Grade | a4-70 / a4-80 |
| Thread Direction | right hand |
| Packaging | box / bulk / oem packaging |
| Customization | available |
Technical Parameters
| Parameter | Value |
|---|---|
| Tensile Strength | ≥ 600–800 mpa |
| Yield Strength | ≥ 300–600 mpa |
| Hardness | 80–110 hrb |
| Density | 8.0 g/cm³ |
| Corrosion Resistance | excellent (marine & chemical environments) |
| Operating Temperature | -60°c to 400°c |
| Thread Tolerance | iso metric class 6g |
| Manufacturing Standard | din915 / iso equivalent |
Materials and Manufacturing Process
The din915 316 stainless steel cup point socket set screw is produced through a high-precision manufacturing process to ensure strong locking performance and dimensional accuracy.
- raw material selection: premium 316 stainless steel wire rod
- cold heading: forming screw body structure
- thread rolling: high-precision metric threading
- point forming: cup point machining process
- heat treatment: improves strength and fatigue resistance
- surface finishing: corrosion-resistant natural finish
- cleaning process: removes oil and contaminants
- inspection: dimensional and mechanical testing
- packaging: export-grade protective packaging
This ensures stable performance for industrial fasteners used in precision mechanical systems.
Applications of the Product
The din915 316 stainless steel cup point socket set screw is widely used across multiple industries:
- machinery manufacturing: shaft and collar locking
- automation equipment: precision mechanical systems
- automotive industry: internal component fixation
- marine engineering: corrosion-resistant assemblies
- petrochemical industry: chemical environment equipment
- instrumentation: precision adjustment systems
- industrial equipment: vibration-resistant locking systems
- OEM manufacturing: compact mechanical assemblies
Its headless design makes it ideal for concealed or flush installation compared with DIN931 or DIN933 bolts.
Why Choose This Product
- high-quality 316 stainless steel material
- excellent corrosion resistance performance
- strong cup point locking force
- suitable for precision positioning applications
- compact headless design for space saving
- stable performance under vibration
- compatible with metric internal hex tools
- OEM bulk production support
- long service life in harsh environments
Why Choose Flybear
Flybear is a professional manufacturer specializing in industrial fastening systems.
- advanced cold heading and precision machining lines
- strict ISO-based quality control system
- strong OEM customization capability
- stable mass production capacity
- global export experience
- engineering technical support
Flybear provides reliable industrial fasteners and precision-engineered fastening solutions for global industries.
Quality Inspection and Control
Each din915 316 stainless steel cup point socket set screw undergoes strict inspection:
- chemical composition analysis
- tensile strength testing
- hardness testing
- thread gauge inspection
- point geometry inspection
- dimensional accuracy measurement
- corrosion resistance testing
- surface defect inspection
- packaging quality inspection
All processes comply with ISO quality management standards.
Selection Guide
When selecting a din915 316 stainless steel cup point socket set screw, consider:
- required holding force level
- shaft or component hardness
- corrosion environment (marine/chemical)
- thread size compatibility
- installation torque requirements
- space constraints
Proper selection ensures reliable locking and long-term stability.
FAQ
1. what is din915 set screw?
it is a headless socket set screw with a cup point used for internal locking.
2. what is the function of a cup point?
it provides strong grip by concentrating force on the contact surface.
3. is 316 stainless steel corrosion resistant?
yes, it performs well in marine and chemical environments.
4. where is it commonly used?
it is used in machinery, automation, and precision equipment.
5. can custom sizes be produced?
yes, flybear supports oem customization based on requirements.
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 quotation, customization, and technical support, please Contact Us.




