- Model No.: DIN 603
- Type: Mushroom Head Carriage Bolt
- Head Style: Round
- Grade: 8.8
- Finish: Color Zinc Plated
- Brand: NGL
- Origin: Ningbo, Zhejiang, China
- Material: Carbon Steel
- Connection Type: Standard Bolt
- Standards: DIN, ANSI, GB, JIS, BSW, GOST
- Application: Industrial Machinery
- Available Finishes: Black, Plain, ZP, YZP, BZP, WZP
- Size Range: M6 to M56; 5/32" to 3"
- Specification: M4 to M56
- HS Code: 7318150000
**Product Description** The DIN 603 Mushroom Head Square Neck Carriage Bolt is a high-quality fastener designed for heavy-duty applications in machinery and industrial settings. This bolt features a rounded mushroom-shaped head and a square neck that prevents rotation when tightened, making it ideal for use in equipment where vibration or movement could loosen standard bolts. Bolts are often confused with screws, but they are distinct fasteners typically used with nuts. A hex cap screw, for example, has a hexagonal head and is driven by a wrench, while a carriage bolt has a square neck to prevent spinning during installation. The DIN 603 model is known for its durability and reliability, meeting international standards such as DIN, ASTM, ANSI, JIS, EN, ISO, and GB. **Key Features:** - **Standard Compliance:** DIN, ASTM/ANSI, JIS, EN, ISO, AS, GB - **Material Options:** Carbon steel, stainless steel (SS201, SS303, SS304, SS316, SS316L, SS904L, F593) - **Steel Grades:** DIN: 4.6, 4.8, 5.6, 5.8, 8.8, 10.9, 12.9; SAE: 2, 5, 8; ASTM: 307A, 307B, A325, A394, A490, A449 - **Finishing Options:** Zinc (yellow, white, blue, black), Hot Dip Galvanized (HDG), Black Oxide, Geomet, Dacromet, Anodization, Nickel Plated, Zinc-Nickel Plated - **Production Process:** Cold Forging (M2-M24), Hot Forging (M24-M100), Machining & CNC for Customized Parts - **Lead Time:** 15–30 days during busy season, 10–15 days during slack season - **Stock Products:** 4.8, 8.8, 10.9 grades of DIN 6923, GB5783, and GB5782; All DIN standard stainless steel bolts available - **Free Samples:** Available for standard fasteners If you're unsure about the right product for your needs, feel free to reach out anytime—we’re here to help you find the perfect solution. Our team provides professional support to ensure you get the best quality and performance for your application.
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