Description
The 316 Stainless Steel DIN603 Round Head Square Neck Carriage Bolt is a high-performance fastener engineered for exceptional durability and corrosion resistance, specifically in chloride-rich environments.
Adhering to the precise DIN 603 standard and carrying an A4-70 classification, this Square Neck Carriage Bolt features a distinct design that offers a significant advantage over standard hexagon bolts in many structural applications. The unique square neck sits beneath the round head to lock into the material, providing a robust, anti-rotation solution that makes it perfect for outdoor, marine, and highly corrosive projects.
Features & Benefits
- Ultimate Corrosion Resistance: Made from 316 stainless steel, this fastener provides exceptional resistance to corrosion, rust, and oxidation.
- High Strength & Durability: With a tensile strength of 700 N/mm² (A4-70), this square neck carriage bolt offers high hardness, strong wear resistance, and the ability to withstand significant stress without deforming.
- Durable and Strong: The square neck prevents rotation during installation, while the round head offers a smooth, clean finish. This ensures a secure hold, even under heavy load conditions.
- High-Quality Threading: The deep screw threads allow for uniform force distribution, ensuring tight and secure connections in mechanical and structural assemblies.
Specification
There are tolerances in this product, the size is subject to the actual object, please be careful to shoot!
Size unit: mm
|
Gauge lattice |
M6 |
M8 |
M10 |
M12 |
|
|
pitch |
1 |
1.25 |
1.5 |
1.75 |
|
|
Head diameter |
dk max |
16.55 |
20.65 |
24.65 |
30.65 |
|
dk min |
15.45 |
19.35 |
23.35 |
29.35 |
|
|
Square neck thickness |
k1 max |
4.6 |
5.6 |
6.6 |
8.75 |
|
k1 min |
3.4 |
4.4 |
5.4 |
7.25 |
|
|
Head thickness |
k max |
3.88 |
4.88 |
5.38 |
6.95 |
|
k min |
3.12 |
4.12 |
4.62 |
6.05 |
|
|
Square neck to side |
s max |
6.48 |
8.58 |
10.58 |
12.7 |
|
s min |
5.52 |
7.42 |
9.42 |
11.3 |
|
FAQ:
Q1: Why choose a Square Neck Carriage Bolt over a standard hex bolt?
A: The primary advantage is the square neck. When installed into a square hole or soft material (like wood), the neck locks the fastener in place, preventing it from rotating. This allows for installation from one side with a single wrench and provides a smoother, more aesthetic finish on the head side.
Q2: What does the "A4-70" marking mean?
A: "A4" refers to the material being 316 Stainless Steel (highly corrosion-resistant), and "70" indicates the tensile strength class, specifically 700N/mm2. This marking is visible on the head of the bolt.
Q3: Is this fastener suitable for marine use?
A: Yes. Because it is manufactured from 316 stainless steel, this Square Neck Carriage Bolt is specifically designed for chloride-rich environments, making it perfect for marine and coastal applications where standard stainless steel might corrode.
