**Mushroom Head Square Neck Bolts / Carriage Bolt**
**Model No.:** M5-M20, 1/4-3/4
**Application:** Machinery, Chemical Industry, Environmental, Building
**Finish:** Color-Zinc Plated
**Name:** Mushroom Head Square Neck Bolts / Carriage Bolt
**Brand Name:** GS
**Samples:** Free
**Delivery Time:** 3-20 days
**Payment Terms:** T/T or L/C
**Finish Type:** Plain
**Size:** M5-M20
**Trademark:** GS
**Transport Package:** Bag + Carton + Pallet
**Specification:** M5-M20
**Origin:** Zhejiang, China
**HS Code:** 7318151001
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**Product Description:**
Mushroom Head Square Neck Bolts, also known as Carriage Bolts, are widely used in industrial and construction applications. These bolts feature a square neck that prevents rotation when tightened, making them ideal for use in wood or other non-metallic materials. They are available in various sizes, from M5 to M20, and can be customized according to specific requirements.
**Key Features:**
- **Material Options:** Carbon steel (4.8, 6.8, 8.8, 10.9 grades), stainless steel (SS304, SS316), and alloy steel.
- **Surface Treatments:** Plain, zinc-plated, galvanized, black oxide, and nickel-plated.
- **Head Types:** Round head, flat head, and square neck design.
- **Standards:** DIN, GB, ISO, ANSI, ASME, JIS, and more.
- **Customization:** OEM is available based on customer drawings or samples.
**Technical Specifications:**
| **Item** | **Details** |
|------------------|-------------|
| **Size** | M5 - M20 or custom |
| **Length** | 16mm - 300mm |
| **Material** | Carbon steel, stainless steel, alloy steel |
| **Finish** | Plain, Zinc Plated, Galvanized, Black Oxide, etc. |
| **Standard** | DIN, GB, ISO, ANSI, ASME, JIS |
| **Packaging** | Bulk in master cartons, then on pallets |
| **Sample Policy**| Free samples available |
| **Payment** | T/T or L/C |
**About Us:**
Jiaxing Goshen Hardware Co., Ltd. is a leading manufacturer of fasteners and hardware products, with over a decade of experience in the industry. Previously known as Haina Fastener Co., Ltd., we are committed to providing high-quality products and excellent service to both domestic and international clients.
**Main Products:**
- **Bolts:** DIN933, DIN931, DIN419, DIN558, DIN7990, DIN6922, ASME/ANSI B18.2.1, GB, BSW, ISO Hex Bolts, Carriage Bolts, Heavy Hex Bolts, Flange Head Bolts, Anchor Bolts, etc.
- **Rods:** Threaded Rod (DIN976), Threaded Bar (DIN975), Stud Bolts (B7), etc.
- **Nuts:** Hex Nuts, Heavy Hex Nuts, 2H Nuts, Flange Nuts, Cap Nuts, Nylon Lock Nuts, etc.
- **Screws:** Hex Screws, Self-Drilling Screws, Self-Tapping Screws, Drywall Screws, Pan Head Screws, Button Head Screws, Machine Screws, Wood Screws, etc.
- **Washers:** Flat Washers, Spring Washers, Lock Washers, Square Washers, etc.
**Custom Orders:**
If you have your own drawings or samples, we can produce according to your specifications. Our team is ready to assist you with any customization needs.
**Our Promise:**
1. High-quality products
2. Competitive pricing
3. Fastest delivery time
4. Quick response
5. Excellent customer service
For more information, visit our website: [www.cngoshen.com](http://www.cngoshen.com)
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