8.8 Grade Full Thread Hex Bolt Hot Dip Galvanized (HDG)
| Product Name: | Full Thread Hex Bolt Hot Dip Galvanized 8.8 |
| SKU: | HB-0020 |
| Price: | USD0.009 - USD0.229 / piece |
| MOQ: | 500 pieces (Min. Order) |
| Availability: | In Stock |
| Package: | BOX/Bag/Carton/Customized |
| Port: | Tianjin Port |
| Supply Ability: | 100000 pcs per month |
| Lead Time: | 7-30 days after deposit |
Acceptance:
OEM/ODM, Trade, Wholesale, Regional Agency
Payment:
30% Down Payment by TT + 70% Balance Before Shipment
Product Description
Our Full Thread Hex Bolt, Grade 8.8 with Hot Dip Galvanized (HDG) finish, is engineered for demanding applications where superior corrosion resistance is non-negotiable. Manufactured from medium carbon steel and heat-treated to meet ISO 898-1 Property Class 8.8 standards, this bolt delivers a minimum tensile strength of 800 MPa. The full-length threading allows for adjustable positioning and maximum flexibility in assembly. The hot-dip galvanizing process coats the entire bolt in a thick, durable layer of zinc, providing exceptional protection against rust and corrosion in harsh environments, including coastal and industrial settings. This bolt is the go-to choice for structural, outdoor, and heavy-duty industrial applications.
Technical Specifications
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Standard | ISO 4017, DIN 931, ASTM A325 | Thread Type | Full Thread, Metric Coarse |
| Head Type | Hexagon Head | Property Class | Grade 8.8 |
| Drive Type | Wrench/Socket | Coating / Finish | Hot Dip Galvanized (HDG) |
| Coating Thickness | ~55-85 µm (Typical) | Material | Medium Carbon Steel, Quenched & Tempered |
| Tensile Strength | 800 MPa (min) | Yield Strength | 640 MPa (min) |
| Corrosion Resistance | Excellent (Salt Spray Test: 1000+ hours to red rust) | Hardness | 22-32 HRC |
Product Size (Hot-Selling Models for Middle East, Central & Southeast Asia)
We offer a comprehensive range of sizes to meet the needs of various heavy-duty and outdoor applications.
| Diameter (mm) | Diameter (Inch) | Length (mm) | Length (Inch) |
|---|---|---|---|
| M10 | 3/8″ | 30 – 100 | 1¼” – 4″ |
| M12 | 1/2″ | 40 – 120 | 1½” – 4¾” |
| M16 | 5/8″ | 50 – 150 | 2″ – 6″ |
| M20 | 3/4″ | 60 – 200 | 2⅜” – 8″ |
| M24 | 1″ | 80 – 240 | 3⅛” – 9½” |
| M30 | 1¼” | 100 – 300 | 4″ – 12″ |
Note: The M12, M16, and M20 diameters in lengths from 60mm to 150mm are our top sellers for structural and fencing applications. Custom lengths and diameters are available for large project orders.
Application Scenarios
This HDG bolt is essential for projects exposed to the elements:
- Outdoor Structural Steelwork: Critical for bridge construction, highway guardrail installation, and outdoor structural frameworks requiring maximum corrosion protection.
- Utility and Transmission Towers: The standard fastener for assembling power line towers and telecommunication masts exposed to all weather conditions.
- Heavy-Duty Fencing and Security: Ideal for securing chain-link fences, security gate hinges, and outdoor enclosure assembly in commercial and industrial properties.
- Marine and Coastal Applications: Specified for harbor structures, dock fittings, and boat trailer assembly due to its exceptional resistance to saltwater corrosion.
- Agricultural and Water Treatment Equipment: Used in irrigation systems, greenhouse frameworks, and equipment within water treatment plants.
- Renewable Energy Infrastructure: Essential for solar panel mounting structures and wind farm infrastructure requiring long-term, maintenance-free performance.