DIN931 304 Stainless Steel Hexagonal Bolt
The din931 304 stainless steel hexagonal bolt is a high-strength partially threaded fastening component widely used in structural assemblies, machinery manufacturing, and general industrial engineering systems. As a core industrial fastener, the din931 304 stainless steel hexagonal bolt provides excellent mechanical stability, reliable clamping force, and strong shear resistance in load-bearing applications.
In modern fastening systems, the din931 304 stainless steel hexagonal bolt is commonly paired with stainless steel hex nut and other stainless steel fasteners to create durable and reusable bolted joints. Compared with full-thread DIN933 bolt, the DIN931 design offers a shank section that improves shear strength and structural alignment, making it ideal for heavy-duty assemblies.
Product Overview
The din931 304 stainless steel hexagonal bolt is manufactured according to DIN931 international standards, ensuring consistent geometry, precise threading, and reliable mechanical performance. Made from high-quality 304 stainless steel, it delivers excellent corrosion resistance in general industrial, outdoor, and humid environments.
The partially threaded structure of the din931 304 stainless steel hexagonal bolt improves load distribution and reduces stress concentration in structural connections. It is widely used in machinery, construction, automotive systems, and OEM production lines where strength and durability are required.
As part of OEM fasteners and standardized fastening systems, the din931 304 stainless steel hexagonal bolt ensures stable performance under both static and dynamic loading conditions.
Product Specifications
| Item | Specification |
|---|---|
| Standard | din931 |
| Product Name | din931 304 stainless steel hexagonal bolt |
| Material | 304 stainless steel |
| Thread Type | metric partial thread |
| Head Type | hexagonal head |
| Drive Type | external hex |
| Diameter Range | m3 – m64 |
| Length Range | 10 mm – 300 mm |
| Surface Finish | natural stainless steel |
| Strength Grade | a2-50 / a2-70 |
| Thread Direction | right hand |
| Packaging | box / bulk / oem packaging |
| Customization | available |
Technical Parameters
| Parameter | Value |
|---|---|
| Tensile Strength | ≥ 500–700 mpa |
| Yield Strength | ≥ 210–450 mpa |
| Hardness | 70–95 hrb |
| Density | 7.93 g/cm³ |
| Corrosion Resistance | excellent (general industrial environments) |
| Operating Temperature | -50°c to 300°c |
| Thread Tolerance | iso metric class 6g |
| Manufacturing Standard | din931 / iso equivalent |
Materials and Manufacturing Process
The din931 304 stainless steel hexagonal bolt is produced through a controlled cold forging and precision machining process to ensure consistent quality and mechanical strength.
- raw material selection: high-grade 304 stainless steel wire rod
- cold heading: forming hexagonal head structure
- shank forming: partial thread preparation
- thread rolling: high-precision metric threading
- heat treatment: improves strength and fatigue resistance
- surface finishing: corrosion-resistant natural surface
- cleaning process: removes oil and impurities
- inspection: dimensional and mechanical testing
- packaging: export-grade protective packaging
This process ensures stable performance for industrial fasteners used in engineering and structural systems.
Applications of the Product
The din931 304 stainless steel hexagonal bolt is widely used across multiple industries:
- construction engineering: steel frame and structural connections
- machinery manufacturing: equipment assembly systems
- automotive industry: chassis and mechanical components
- renewable energy: solar and wind mounting structures
- petrochemical industry: moderate corrosion environments
- marine applications: humid and coastal environments
- industrial equipment: general mechanical fastening
- OEM production systems: mass assembly lines
- electrical installations: outdoor structural fixing
Its partial thread design makes it more suitable for shear-load applications than DIN933 bolt systems.
Why Choose This Product
- high-quality 304 stainless steel material
- excellent corrosion resistance performance
- superior shear strength from partial thread design
- stable mechanical performance under load
- long service life in industrial environments
- compatible with standard metric fastening systems
- suitable for OEM bulk production
- reliable vibration resistance performance
- widely used in structural applications
Why Choose Flybear
Flybear is a professional manufacturer specializing in high-quality industrial fastening solutions.
- advanced cold forging and machining production lines
- strict iso-based quality control system
- strong oem customization capability
- stable mass production and supply capability
- global export experience
- engineering technical support
Flybear provides reliable industrial fasteners and complete fastening solutions for global industries.
Quality Inspection and Control
Each din931 304 stainless steel hexagonal bolt undergoes strict quality inspection:
- chemical composition analysis
- tensile strength testing
- hardness testing
- thread gauge 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 din931 304 stainless steel hexagonal bolt, consider:
- load type (shear or tensile)
- environmental corrosion conditions
- required strength grade (a2-50 / a2-70)
- bolt diameter and length
- structural design requirements
- thread engagement length
Proper selection ensures safe and stable fastening performance.
FAQ
1. what is din931 hexagonal bolt?
it is a partially threaded hex head bolt used for structural fastening applications.
2. what is the difference between din931 and din933?
din931 is partial thread, while din933 is full thread.
3. is 304 stainless steel corrosion resistant?
yes, it performs well in most general industrial environments.
4. why use partial thread bolts?
they provide better shear strength and structural stability.
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.
