Description
The 2507 Duplex Stainless Steel External Hex Bolt is a high-performance fastener engineered for demanding industrial environments requiring superior strength, durability, and corrosion resistance. Manufactured in accordance with DIN 933 standards, this hexagonal head bolt features a fully threaded shank that ensures maximum load engagement and secure fastening under high stress.
Constructed from 2507 duplex stainless steel, this external hex bolt delivers exceptional mechanical strength - far exceeding standard austenitic grades—as well as outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking. It is widely used in marine, chemical processing, offshore oil & gas, and heavy machinery applications where reliability and longevity are critical.
Features & Benefits
- High Strength & Durability: The 2507 duplex stainless steel construction provides a yield strength of 800-1000 MPa, making it twice as strong as typical austenitic stainless steels.
- Extreme Corrosion Resistance: The bolt's advanced material provides exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking.
- Full Thread Design: The full-threaded body provides uniform load distribution, ensuring better resistance to locking and ensuring the bolt remains tight over time.
- Hexagonal Head (External): DIN933 specification provides a standardized hexagonal head for secure fitting and easy tightening with wrenches or sockets. The design minimizes slippage during installation, even under high torque conditions.
Specification
|
Specification -d |
M4 |
M5 |
M6 |
M8 |
M10 |
M12 |
M14 |
M16 |
|
Dental distance |
0.7 |
0.8 |
1 |
1.25 |
1.5 |
1.75 |
2 |
2 |
|
Opposite side -s |
7 |
8 |
10 |
13 |
17 |
19 |
22 |
24 |
|
Head thickness -k |
2.8 |
3.4 |
4.1 |
5.3 |
6.8 |
7.5 |
9 |
10 |
|
Specification -d |
M18 |
M20 |
M22 |
M24 |
M27 |
M30 |
M33 |
M36 |
|
Dental distance |
2.5 |
2.5 |
2.5 |
3 |
3 |
3.5 |
3.5 |
4 |
|
Opposite side -s |
27 |
30 |
32 |
36 |
41 |
46 |
50 |
55 |
|
Head thickness -k |
12 |
12.5 |
14 |
15 |
17 |
19 |
21 |
23 |
FAQ:
Q1: What is the primary advantage of 2507 Duplex Stainless Steel in an External Hex Bolt?
A: The main advantage is the combination of extremely high strength (nearly double that of 316L SS) and exceptional corrosion resistance. This makes the external hex bolt perfectly suited for applications exposed to high-stress, high-chloride, and acidic conditions.
Q2: What is an External Hex Bolt?
A: An External Hex Bolt is a fastener with an outer hexagonal head designed for tightening with a wrench or socket, allowing high torque and secure fastening.
Q3: Is the full thread design necessary?
A: Full threading provides increased contact area, optimized load distribution, and enhanced fastening security—especially under vibration or heavy loads.
Q4: Is this fastener suitable for oil and gas industry applications?
A: Absolutely. Due to its superior resistance to stress corrosion cracking and localized corrosion, this 2507 Duplex fastener is specifically suitable for demanding applications within the oil & gas, petrochemical, and chemical industries.
