Shaanxi Flourish Industrial Co., Ltd.
| Tensile Strength | 400 MPa (min) |
| Supply Ability | 50 Tons per Month |
| Material | Carbon Steel |
| Property Class | 4.8 |
| Size Range | M6 - M24 |
| Yield Strength | 320 MPa (min) |
| Surface Finish | Plain, Zinc Plated, Hot Dip Galvanized |
| Delivery Time | 7-15 days for stock sizes, 15-25 days for production |
| Head Style | Hexagon Head |
| Payment Terms | T/T,L/C |
| Thread | Full Thread, Metric Coarse |
| Standard | GB/T 5781‑2025 (Hexagon Head Bolts, Product Grade C) |
| Packaging Details | Plastic bags + cartons + plywood pallets (strapped and film-wrapped) |
| Application | Construction, Steel Structures, General Machinery |
| Brand Name | FLRS or OEM |
| Model Number | FLRS-GB5781 |
| Place of Origin | China |
| Certification | ISO 9001 |
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Product Specification
| Tensile Strength | 400 MPa (min) | Supply Ability | 50 Tons per Month |
| Material | Carbon Steel | Property Class | 4.8 |
| Size Range | M6 - M24 | Yield Strength | 320 MPa (min) |
| Surface Finish | Plain, Zinc Plated, Hot Dip Galvanized | Delivery Time | 7-15 days for stock sizes, 15-25 days for production |
| Head Style | Hexagon Head | Payment Terms | T/T,L/C |
| Thread | Full Thread, Metric Coarse | Standard | GB/T 5781‑2025 (Hexagon Head Bolts, Product Grade C) |
| Packaging Details | Plastic bags + cartons + plywood pallets (strapped and film-wrapped) | Application | Construction, Steel Structures, General Machinery |
| Brand Name | FLRS or OEM | Model Number | FLRS-GB5781 |
| Place of Origin | China | Certification | ISO 9001 |
| High Light | Grade 4.8 Property Class ，GB/T 5781 Standard Compliant ，Hot Dip Galvanized Option | ||
GB/T 5781-2025 Hexagon Head Bolts Grade 4.8 Carbon Steel (Product Grade C)
Product Description
| Attribute | Specification |
|---|---|
| Product Name | GB/T 5781-2025 Hexagon Head Bolt, Product Grade C |
| Standard | GB/T 5781-2025 (Equivalent to ISO 4018:2022 / DIN 558) |
| Material | Carbon Steel |
| Property Class | 4.8 |
| Thread | Full Thread, Metric Coarse |
| Size Range | M6 - M24 (Custom Sizes on Request) |
| Head Style | Hexagon Head |
| Surface Finish | Plain, Zinc Plated, Hot Dip Galvanized |
| Certification | ISO 9001 |
| Application | Construction, Steel Structures, General Machinery |
| Available Packing | Plastic bags + cartons + plywood pallets (strapped and film-wrapped) |
Key Features
1. Grade 4.8 property class - minimum tensile strength 400 MPa and yield strength 320 MPa, a dependable choice for general-purpose fixing.
2. Full thread - the thread runs the whole length of the shank, so the bolt can be cut to size on site without losing grip.
3. Standard dimensions - manufactured to GB/T 5781-2025, interchangeable with ISO 4018:2022 and DIN 558 bolts of the same size.
4. Finish options - plain, zinc plated or hot dip galvanized, so you can pick the right corrosion protection for the job.
5. Economy grade C - made for non-critical connections, helps keep project cost under control.
Typical Applications
- Steel structure assembly and building frames.
- General machinery and equipment fixing.
- Scaffolding and temporary structures.
- Fencing, racks and storage systems.
Our Services
1. Quick response to inquiries, usually within 24 hours.
2. Full specification and size lists available on request.
3. Samples can be arranged before mass production.
4. On-time delivery with complete export documentation.
5. Customized packing, with photos sent before shipment.
6. Fair pricing with consistent quality.
Company Details
Business Type:
Manufacturer,Exporter,Seller
Year Established:
2019
Total Annual:
2000000-5000000
Employee Number:
50~100
Ecer Certification：
Verified Supplier
Shaanxi Flourish Industrial Co., Ltd specializes in manufacturing and supplying various fasteners & some pipe fittings. Bolts, nuts, washers, screws, plugs, couplings,end dishes, gaskets and flanges round out our most popular categories, while our extensive collection of standoffs, pins and rive... Shaanxi Flourish Industrial Co., Ltd specializes in manufacturing and supplying various fasteners & some pipe fittings. Bolts, nuts, washers, screws, plugs, couplings,end dishes, gaskets and flanges round out our most popular categories, while our extensive collection of standoffs, pins and rive...
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