**High Quality Color Zinc Plated Square Socket Countersunk Head Screw**
A bolt is a type of threaded fastener with an external male thread. Bolts are often confused with screws, but they are typically used in conjunction with nuts and are designed to be tightened with a wrench or socket. A hex cap screw, for example, has a hexagonal head and is commonly used in mechanical applications where strength and precision are required.
Our **Square Socket Countersunk Head Screws** are made from **Carbon Steel** and are available in multiple grades such as **4.8, 8.8, and 10.9**, ensuring durability and reliability for a wide range of industrial uses. These screws feature a **countersunk head** design, making them ideal for flush mounting in machinery and construction.
They are coated with a **Color Zinc Plating** finish, providing excellent corrosion resistance and a professional appearance. The **square drive** design ensures a secure grip and easy installation. They comply with international standards such as **DIN, ANSI, GB, JIS, BSW, and GOST**, making them suitable for global applications.
**Key Features:**
- **Material:** Carbon Steel
- **Head Type:** Countersunk
- **Finish:** Color Zinc Plated
- **Standard:** DIN, ANSI, GB, JIS, BSW, GOST
- **Grade:** 4.8, 8.8, 10.9
- **Application:** Machinery, Construction
- **MOQ:** 100,000 pieces
- **Sample Available:** Yes
- **HS Code:** 731815
**Product Specifications:**
| Product Name | High Quality Color Zinc Plated Square Socket Countersunk Head Screw |
|--------------|--------------------------------------------------------------------|
| Standard | DIN, ASTM/ANSI, JIS, EN, ISO, AS, GB |
| Material | Stainless Steel (SS201, SS304, SS316), Carbon Steel |
| Finishing | Zinc (Yellow, White, Blue, Black), Hot Dip Galvanized, Black Oxide, Dacromet, Anodization, Nickel Plated |
| Production Process | Cold Forging (M2-M24), Hot Forging (M24-M100), CNC Machining |
| Custom Lead Time | 15–30 days (busy season), 10–15 days (off-season) |
| Stock Products | 4.8, 8.8, 10.9 Grade Bolts (DIN & GB Standards) |
| Free Samples | Available for standard fasteners |
We are a **professional manufacturer** of high-quality fasteners, producing according to customer specifications and industry standards. Our products are tested for durability and performance to ensure long-lasting use. We offer **competitive pricing** through direct factory supply and provide **customized solutions** based on samples or drawings.
With over **20 years of experience**, we aim to deliver the best fastening solutions tailored to your needs. If you're unsure about what you need, feel free to reach out—we’re here to help!
For more details, visit: [www.hainafastener.com](http://www.hainafastener.com)
PROMAC Barrel Wear Inspection Device
Ensuring the feed screw and barrel remain in top condition is an essential part to achieving processing goals. Over time and under continuous operating conditions, the feed screw and barrel will experience wear. You will need both cleaning tools and measuring tools to ensure accuracy of your measurements. PromaXX provides Maintenance Equipment to our valuable customers in the daily maintenance of Feed screw and Barrel.
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Jiangmen PromaXX Extrusion Technology Co.,Ltd. , https://www.extruder-service.com