S-92655A401 1/2"-13 x 1 1/4" ASTM A193 18-8 Stainless Steel Heavy Hex Head Screws for High-Pressure Applications

Key Features & Benefits at a Glance

• Exceptional corrosion resistance provided by 18-8 stainless steel construction, ideal for harsh industrial environments
• High tensile strength of 75,000 psi ensures reliable performance under heavy loads and vibration
• Superior torque application enabled by external hex drive design and 7/8" head width for secure fastening
• Easy installation and removal with coarse UNC threading and Class 2A fit for quick assembly operations
• Full threading along the 1 1/4" length provides maximum grip and load distribution across the entire fastener
• Certified quality assurance through ASTM A193 Grade B8 compliance for consistent mechanical properties
• Durable Rockwell B100 hardness maintains thread integrity and prevents stripping during repeated use

Professional Applications & Engineering Value

These 1/2"-13 UNC hex head screws deliver critical performance advantages in demanding industrial applications where corrosion resistance and mechanical strength are paramount. The 18-8 stainless steel composition provides excellent protection against rust and chemical degradation, making these fasteners ideal for chemical processing equipment, marine environments, and food processing machinery. The coarse thread design combined with Class 2A thread fit ensures rapid installation while maintaining precise tolerances, significantly reducing assembly time in production environments. The external hex drive configuration allows for high-torque application with standard tools, preventing cam-out and ensuring secure fastening in high-vibration applications such as heavy machinery, structural frameworks, and industrial piping systems. With full threading along the entire shank, these screws distribute clamping forces evenly, eliminating stress concentration points that can lead to joint failure.

Specification Summary & Compliance

This hex head screw features precise 1/2"-13 UNC coarse threads with Class 2A fit tolerance for reliable engagement. Manufactured to ASTM A193 Grade B8 specifications, the fastener delivers consistent mechanical properties including 75,000 psi tensile strength and Rockwell B100 hardness. The inch system measurement ensures compatibility with North American industrial standards, while the 18-8 stainless steel composition meets industry requirements for corrosion-resistant applications. Compliant with RoHS and REACH environmental regulations for safe industrial use.