Description
The 2205/310S Stainless Steel GB Hex Bolts are high-performance hexagonal head bolt fasteners engineered to meet the stringent GB5783 standard. Designed for use in challenging industrial environments, these full thread bolts are available in two premium stainless steel grades - Duplex 2205 and 310S austenitic stainless steel—providing exceptional strength, corrosion resistance, and durability.
The fully threaded shank ensures maximum engagement with mating components, delivering consistent load distribution and superior fastening reliability. Whether used in marine structures, chemical processing systems, heat-exposed equipment, or general industrial machinery, these GB Hex Bolts offer long-lasting performance and resistance to the harshest environmental conditions.
Features & Benefits
- High Strength: Due to the use of 2205 duplex stainless steel or 310S austenitic stainless steel, these bolts offer exceptional strength, making them suitable for heavy-duty applications.
- Superior Corrosion Resistance: Both material options provide exceptional resistance to rust, oxidation, and stress corrosion cracking, ensuring a long service life in harsh chemical and marine environments.
- Robust Full Thread Design: The full thread shank maximizes engagement with the nut or tapped hole, ensuring a uniform force distribution and a powerful, secure connection.
- Secure & Reliable Fastening: Manufactured with a standard hexagonal head, this GB Hex Bolt is easy to install and tighten with conventional tools, reducing the risk of slippage during the locking process.
Specification
|
d |
M3 |
M4 |
M5 |
M6 |
M8 |
M10 |
M12 |
M14 |
M16 |
||
|
e |
min |
Grade A |
6.01 |
7.66 |
8.79 |
11.05 |
14.38 |
17.77 |
20.03 |
23.36 |
26.75 |
|
Grade B |
5.88 |
7.5 |
8.63 |
10.89 |
14.2 |
17.59 |
19.85 |
22.78 |
26.17 |
||
|
k |
Nominal name |
2 |
2.8 |
3.5 |
4 |
5.3 |
6.4 |
7.5 |
8.8 |
10 |
|
|
Grade A |
min |
1.875 |
2.675 |
3.35 |
3.85 |
5.15 |
6.22 |
7.32 |
8.62 |
9.82 |
|
|
max |
2.125 |
2.925 |
3.65 |
4.15 |
5.45 |
6.58 |
7.68 |
8.98 |
10.18 |
||
|
Grade B |
min |
1.8 |
2.6 |
3.26 |
3.76 |
5.06 |
6.11 |
7.21 |
8.51 |
9.71 |
|
|
max |
2.2 |
3 |
3.74 |
4.24 |
5.54 |
6.69 |
7.79 |
9.09 |
10.29 |
||
|
s |
Grade A |
min |
5.5 |
7 |
8 |
10 |
13 |
16 |
18 |
21 |
24 |
|
max |
5.32 |
6.78 |
7.78 |
9.78 |
12.73 |
15.73 |
17.73 |
20.67 |
23.67 |
||
|
Grade B |
min |
5.2 |
6.64 |
7.64 |
9.64 |
12.57 |
15.57 |
17.57 |
20.16 |
23.16 |
|
|
max |
5.5 |
7 |
8 |
10 |
13 |
16 |
18 |
21 |
24 |
||
FAQ:
Q1: What is the difference between GB5783 and GB5782 standards?
A: GB5783 refers to GB Hex Bolts that are fully threaded (threads run the entire length of the shank up to the head). GB5782 refers to half-threaded or partially threaded bolts.
Q2: When should I choose 2205 over 310S?
A: Choose Duplex 2205 if your primary concern is high physical strength and resistance to saltwater or stress corrosion cracking. Choose 310S if the fasteners will be exposed to extreme heat (up to 1100°C) and oxidation.
Q3: What are GB Hex Bolts?
A: GB Hex Bolts are fasteners manufactured to the Chinese National Standard GB5783, featuring a hexagonal head and full-thread design for secure fastening.
Q4: Are these fasteners suitable for chemical environments?
A: Yes. Both 2205 and 310S offer superior chemical resistance compared to standard carbon steel or 304 stainless steel, making them ideal for chemical processing plants.
