A4-80 DIN933 DIN931 Hex Head Bolt M6-M16, Stainless Steel and Steel Metric Fastener for Construction and Industrial Applications
This DIN933/DIN931 hex head bolt is designed for construction, machinery assembly and general industrial fastening. The hexagonal head allows installation with a standard wrench or socket, while the threaded shaft provides a secure connection with a matching metric nut or threaded hole.
Specification Table
| Specification | Product Information |
|---|---|
| Product Name | Hex bolt |
| Material Options | Steel and stainless steel |
| Core Attribute Grades | 4.8 8.8 10.9 12.9 |
| Thread Type | UNF |
| Head Type | Hexagonal head |
| Model Range | M6‑M16 |
| Length Options | 30 mm, 40 mm, 50 mm, 60 mm, 80 mm, 90 mm and 100 mm |
| Standard | DIN933 DIN 931 |
| Surface Treatment | Galvanized, zinc or plain |
| Detailed Finish Reference | Blue‑white galvanized |
| Certificate Information | ISO9001 listed |
| Application | Building construction |
| Origin | Hebei, Handan, China |
Surface Treatment Options
Galvanized Finish
The galvanized finish provides a bright metallic appearance and is suitable for general construction and industrial fastening. It can be used for machinery assembly, equipment installation and structural fastening where a zinc‑treated surface is required.
Zinc Finish
The zinc finish is suitable for general‑purpose fastening and provides a clean metallic appearance. It can be selected for construction hardware, equipment frames and industrial assemblies.
Plain Finish
The plain finish is suitable for applications that require further processing, painting, coating or a specific installation environment. It can also be used where the fastener will be installed in a controlled indoor assembly.
The detailed product information also refers to a blue‑white galvanized finish. The final surface treatment should be selected according to the material, grade and application environment.
Application
This hex head bolt can be used in a variety of applications, including:
- Building construction
- Machinery assembly
- Equipment installation
- Steel structure connections
- Industrial frame assembly
- Bracket and support installation
- Automotive component fastening
- Mechanical maintenance
- General hardware distribution
- Production line equipment
- Construction equipment
- Metric fastening systems
The hexagonal head is suitable for tightening with a wrench or socket. The bolt can be installed through a component, bracket, plate or structural member and secured with a compatible nut and washer.
For high‑strength or corrosion‑sensitive applications, the material and grade should be selected according to the working load, vibration, temperature, moisture and installation requirements.
Matching Fasteners
| Bolt Size | Matching Components |
|---|---|
| M6 | M6 nuts, flat washers and spring washers |
| M7 | M7 nuts, flat washers and spring washers |
| M8 | M8 nuts, flat washers and spring washers |
| M10 | M10 nuts, flat washers and spring washers |
| M12 | M12 nuts, flat washers and spring washers |
| M16 | M16 nuts, flat washers and spring washers |
The nut should match the bolt’s nominal thread size and thread type. Use compatible metric fastening components for the selected application. Flat washers can help distribute the clamping load, while spring washers or other locking components may be selected where additional resistance to loosening is required.
For stainless steel bolt assemblies, the nut and washer material should be selected to provide suitable compatibility and corrosion performance.
Packing & Delivery
The product is listed with carton and plastic bag packaging. The reference package dimensions are 40 × 28 × 14 cm, with a reference gross weight of 25 kg.
Available service options include:
- Plastic bag inner packing
- Carton packing
- Bulk packing for industrial orders
- Customized logo
- Customized packaging
- Graphic customization
- Drawing‑based customization
- Sample‑based customization
- OEM and ODM support
- Delivery arrangement according to order specifications
FAQ
Q1: What type of fastener is this?
It is a DIN933/DIN931 hex head bolt.
Q2: What material options are available?
The page lists steel and stainless steel. The detailed product information also identifies stainless steel.
Q3: What grade is shown for this product?
The product title references A4‑80. The core attributes show 4.8 and 6.8, while the detailed product field additionally lists 4.8, 8.8, 10.9 and 12.9. The exact grade should be selected according to the order specification.
Q4: What thread type is listed?
The listed thread type is UNF.
Q5: What sizes are available?
The model range is M6‑M16. Displayed sizes include M6, M7, M8, M10, M12 and M16.
Q6: What lengths are available?
The listed length options include 30 mm, 40 mm, 50 mm, 60 mm, 80 mm, 90 mm and 100 mm.
Q7: What surface treatments are available?
The listed surface treatments are galvanized, zinc and plain. Blue‑white galvanized is also shown in the detailed information.
Q8: Which nuts and washers can be used?
Use nuts, flat washers and spring washers with the same nominal thread size and compatible thread type.
Q9: Is this bolt suitable for construction?
Yes. Construction is listed as the application, and the bolt can also be used for machinery, equipment and industrial fastening.
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