Overview
The Lamons J21500717 is a premium grade B7 stud bolt fastener system designed for high-strength bolting applications in industrial piping, pressure vessels, and flange assemblies. Manufactured in accordance with Six Sigma principles to ensure the highest quality product, this kit includes 25 pairs of 7/8-9 x 6 inch stud bolts paired with matching 2H hex nuts—offering a complete, ready-to-use fastening solution.
Key Features
- ASTM B7 carbon steel grade for high tensile strength and reliability
- 7/8″-9 UNC thread pitch; 6-inch overall length
- Matched set: 25 stud bolts plus 25 double-hex (2H) nuts
- Double-end studs available in finished (full body) type
- Suitable for ASME B16.5 pressure-temperature flange applications
- New in box condition; ready for immediate use
Technical Specifications
These stud bolts conform to ASTM A193 Grade B7 material and dimensional requirements, ensuring consistent performance in heavy-duty industrial fastening.
Typical Applications
- Flange bolting for pressure vessels and piping systems
- Heat exchanger assembly and maintenance
- Refinery and petrochemical process equipment
- Well head and manifold assembly
- High-temperature and high-pressure service conditions
Compatibility & Replacements
Compatible With
- ASME B16.5 flange assemblies rated for the appropriate pressure and temperature class
- Standard 7/8″-9 UNC tapped holes in flanges and pressure vessel nozzles
- Double-hex (2H) nuts per ASTM A194 Grade 2H specifications
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. This kit is a direct matched set for applications specifying 7/8″-9 x 6 B7 stud bolts with 2H nuts.
Works With
- Standard hex wrench and socket tools (1-3/16″ across flats for 2H nuts)
- Torque procedures per ASME B16.5 and joint assembly best practices
- Thread lubricants and anti-seize compounds approved for B7 fasteners
