**DIN603 Round Head Square Neck Mushroom Head Coach Bolt – High-Quality Stainless Steel 316 Carriage Bolts**
**Product Overview:**
This DIN603 round head square neck mushroom head coach bolt is made from high-quality stainless steel, offering excellent corrosion resistance and durability. It is ideal for use in machinery, chemical industry, and environmental applications. The bolts are available in various sizes (M6–M30) and come in multiple finishes, including passivation, black zinc, and electrophoretic coating.
**Key Features:**
- **Material:** Stainless Steel 316
- **Head Style:** Round, Hexagonal, Countersunk, Square
- **Thread Type:** Coarse Thread
- **Finish:** Plain, Black Zinc, Electrophoretic
- **Standards:** DIN603, ANSI, GB, JIS, AS
- **Certifications:** ISO9001, SGS, ROHS
- **Grade:** A2, A4
- **Application:** Machinery, Chemical Industry, Environmental Protection
**Technical Specifications:**
| Standard | DIN603, B.S, IFI C-40, AS1390 |
|----------|-------------------------------|
| Material | SS304, SS316 |
| Diameter | M6–M30, 1/4"–1" |
| Head Shape | Mushroom Head |
| Thread | Coarse |
| Tip | Flat Point |
| Finish | Plain, Black Zinc, Electrophoretic |
| Grade | A2, A4 |
| Certification | ISO9001, SGS, RoHS |
**Chemical Composition:**
| Material | C | Si | Mn | P | S | Ni | Cr | Mo | Other |
|----------|-------|-----|-----|------|------|------|------|------|-----------|
| 201 | 0.15 | 1 | 5.5–7.5 | 0.06 | 0.03 | 3.5–5.5 | 16–18 | - | N≤0.25 |
| 304 | 0.08 | 1 | 2 | 0.045 | 0.03 | 8.0–10.0 | 18–20 | - | - |
| 304L | 0.03 | 1 | 2 | 0.045 | 0.03 | 8.0–12.0 | 18–20 | - | - |
| 321 | 0.08 | 1 | 2 | 0.045 | 0.03 | 8.0–13.0 | 17–19 | - | Ti≤5*C% |
| 316 | 0.08 | 1 | 2 | 0.045 | 0.03 | 10.0–14.0 | 16–18 | 2–3 | - |
| 316L | 0.03 | 1 | 2 | 0.045 | 0.03 | 10.0–15.0 | 16–18 | 2–3 | - |
| 309S | 0.08 | 1 | 2 | 0.045 | 0.03 | 12.0–15.0 | 22–24 | - | - |
| 410 | 0.15 | - | 1 | - | 0.03 | - | 11.5–13.5 | - | - |
| 420 | 0.26–0.4 | - | 1 | - | 0.03 | - | 12–14 | - | - |
| 430 | 0.12 | 0.75 | 1 | 0.04 | 0.03 | - | 16–18 | - | - |
**Main Products Offered:**
Bolts, Screws, Nuts, Washers, Pins, Rivets, Sleeves, Shafts, CNC Precision Parts
**Size Range:**
- Diameter: M2–M64; 6#–2"; Length: 5mm–400mm (Customized Acceptable)
- Diameter: 1/2"–30"; Length: 1/2"–30" (Customized Acceptable)
**Standard:**
ANSI, UNI, DIN, BS, JIS, AS, GB, ISO, EN
**Surface Finish Options:**
Plain, Minor Polish, Satin Polish, Black Oxide, Electro Painting
**OEM & Customization:**
We offer OEM and ODM services, with customized drawings or samples accepted.
**Delivery & MOQ:**
- Stock items: 3 days delivery
- Production: 7–15 days
- Minimum Order Quantity (MOQ): Flexible to meet your needs
**Packing Details:**
- Carton Size: 25*16*25cm
- Wooden Pallet/Case: 110*90*80cm
- Custom packaging available upon request
**Why Choose Us?**
1. Wide range of products: Any type of stainless steel hardware can be supplied.
2. Excellent service: We believe in honest and sincere business practices.
3. High quality: Strict quality control system ensures reliable performance.
4. OEM Accepted: Produce according to your design or samples.
5. Fast delivery: Large stock available for quick shipment.
6. Low MOQ: Flexible order quantities to suit your business.
**Sample Policy:**
- Free samples for existing molds (3 days)
- Chargeable samples based on your request (5–7 days)
**Company Profile:**
Hand Industrial Ltd, established in 2010, is a professional manufacturer and supplier of stainless steel hardware. Our products include stainless steel bolts, screws, nuts, and more, available in SS304, SS316, SS316L, SS410, and other materials. We comply with international standards and provide OEM services. Our products are widely used in Europe, Australia, North America, the Middle East, Southeast Asia, and parts of Africa.
**Contact Information:**
**LU PENG**
Sales & Marketing Manager
WWW.HANDINDUSTRIAL.COM.CN
We also supply different sizes of SS hex cap bolts, hex socket cap screws, hex flange bolts, tapping screws, and drilling screws. In addition, we offer SS hex dome head cap nuts, hex nuts, flange nuts, hex cap nuts, and hex welding nuts in various sizes. Let us support your project with high-quality fasteners.
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