E-mail: Lyda.wang@youjia-china.com
Large Half Round Head Square Neck Bolt
304 Stainless Steel Round Head Square Neck Bolt
304 Stainless Steel Din603 Carriage Bolt Large Half Round Head Square Neck Bolts
Large Half Round Head Square Neck Bolt
304 Stainless Steel Round Head Square Neck Bolt
304 Stainless Steel Din603 Carriage Bolt Large Half Round Head Square Neck Bolts

304 Stainless Steel DIN603 Large Half Round Head Square Neck Bolt

Type

Round Head Square Neck Bolt (Carriage Bolt)

Standard

DIN603

Material

304 stainless steel

Product strength

Lv. 8

Head Type

Large half-round head

Neck Type

 Square neck (anti-rotation)

Surface Treatment

Stainless steel washing

Packaging

Packaging bag + carton packaging

Large Half Round Head Square Neck Bolt Drawing Sheet

Description

The 304 Stainless Steel DIN603 Round Head Square Neck Bolt is a high-quality fastener engineered for secure, non-rotating fastening in diverse structural and mechanical applications. Commonly known as a carriage bolt, this unique design features a large half-round head and a square neck underneath. The smooth, rounded head provides an aesthetically pleasing finish, while the square neck ensures strong anti-rotation performance - making installation easier, faster, and more secure.

Crafted from premium 304 stainless steel, this fastener offers exceptional resistance to corrosion, rust, and oxidation, making it ideal for both indoor and outdoor use, even in harsh and humid environments. Designed to meet DIN603 standards, it delivers consistent quality and long service life for medium to heavy-duty fastening tasks.

Features & Benefits

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: What is a Round Head Square Neck Bolt used for?
A: It is used for structural, woodworking, and mechanical assemblies where a secure, anti-rotation fastening is required.

Q2: How does the square neck help during installation?
A: The square neck is designed to lock into the material (typically wood or soft metal) as the bolt is inserted. This prevents the entire carriage bolt from spinning, allowing the installer to easily tighten the nut without needing a separate tool to hold the bolt head.

Q3: Is this Round Head Square Neck Bolt suitable for outdoor projects?
A: Yes. Since it is made from 304 stainless steel, it is highly resistant to corrosion and oxidation, making it suitable for both indoor and outdoor use, even in tough environments.

Q4: Can this bolt be used for heavy-duty applications?
A: Yes. This fastener is designed for heavy-duty use and provides a strong hold, ensuring secure fastening for a variety of construction, mechanical, and structural applications.

Related Products