S-92655A678 7/8"-9 x 4 1/2" ASTM A193 18-8 Stainless Steel Heavy Hex Head Screws for High-Pressure Applications
18-8 Stainless Steel Heavy Hex Head Screws for High-Pressure Applications
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Exceptional corrosion resistance thanks to 18-8 Stainless Steel construction, ideal for harsh industrial environments
- High tensile strength of 75,000 psi ensures reliable performance under heavy loads and stress
- Coarse UNC threading provides faster assembly and reduced cross-threading risk in demanding applications
- Class 2A thread fit guarantees consistent, precise engagement for secure fastening without binding
- Partially threaded design allows for controlled clamping force and improved joint integrity
- External hex drive and hex head enable easy installation with standard tools, even in tight spaces
- ASTM A193 Grade B8 certification assures material quality and compliance with high-pressure/temperature standards
Professional Applications & Engineering Value
This 7/8"-9 UNC hex head screw in 18-8 Stainless Steel is engineered to address critical fastening challenges in industrial settings, such as chemical processing, marine equipment, and structural assemblies. Its coarse thread and partial threading design minimize installation time while providing optimal grip length for vibration resistance. The ASTM A193 Grade B8 material grade, combined with 75,000 psi tensile strength and Rockwell B96 hardness, ensures durability under high stress and corrosive conditions, reducing maintenance needs and downtime. The external hex drive facilitates quick tool engagement, making it a reliable choice for heavy-duty applications requiring consistent, long-term performance.
Specification Summary & Compliance
This fastener adheres to Class 2A thread fit tolerances for precise engagement and meets ASTM A193 specifications. It features a 7/8"-9 UNC coarse thread with a right-hand direction, 2" thread length, and 4 1/2" overall length. Manufactured in accordance with industry standards using inch system measurements, it complies with material and performance requirements for reliable use in regulated environments, though specific RoHS or REACH declarations should be verified per batch.
