S-92655A623 1/2"-13 x 9" ASTM A193 18-8 Stainless Steel Heavy Hex Head Screws for High-Pressure Applications

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments and outdoor applications.
• High tensile strength of 75,000 psi ensures reliable performance under heavy loads and prevents fastener failure in critical assemblies.
• Optimized load distribution with a 7 1/2" grip length and partial threading for enhanced joint stability and reduced risk of loosening.
• Precise and durable threading featuring UNC coarse threads with Class 2A fit for faster installation and consistent engagement in various materials.
• Superior mechanical properties backed by ASTM Grade B8 certification and Rockwell B100 hardness for long-term reliability and wear resistance.
• Easy installation and removal with a standard 7/8" external hex head design, compatible with common wrenches for efficient maintenance.
• Compliance with industry standards including ASTM A193, ensuring material quality and performance consistency for professional engineering projects.

Professional Applications & Engineering Value

This 1/2"-13 UNC Hex Head Screw is engineered to address common industrial challenges such as vibration-induced loosening and material fatigue. The 18-8 Stainless Steel composition provides excellent resistance to rust and chemical exposure, making it suitable for marine, chemical processing, and food industry equipment. The coarse UNC thread and partial threading design enhance grip in softer materials and reduce stress concentration, while the external hex drive allows for high-torque applications without stripping. With a 75000 psi tensile strength and ASTM Grade B8 certification, this fastener delivers reliable performance in structural frameworks, machinery assembly, and heavy-duty construction where durability and corrosion resistance are critical.

Specification Summary & Compliance

This hex head screw features a 1/2"-13 UNC thread with Class 2A fit for standard tolerance and easy assembly. It complies with ASTM A193 specifications for high-temperature service and is manufactured from 18-8 Stainless Steel meeting ASTM Grade B8 requirements. The product adheres to industry standards for dimensional accuracy, including thread length (1 1/2"), overall length (9"), and head dimensions (7/8" width, 5/16" height). It is designed for right-hand threading and coarse thread spacing, ensuring compatibility with common industrial components and applications.