S-92865A217 3/8"-24 x 1 1/4" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 120,000 psi ensures reliable performance under heavy loads and vibration
• Superior corrosion resistance with zinc plating that protects against rust in demanding industrial environments
• Precise Class 2A thread fit provides smooth installation and secure fastening with minimal risk of cross-threading
• Fine UNF thread design offers enhanced holding power and superior resistance to loosening compared to coarse threads
• Grade 5 strength classification delivers optimal balance of durability and cost-effectiveness for general industrial applications
• External hex drive design allows for high-torque installation with standard tools and easy visual inspection
• Full threading along entire shank enables maximum engagement depth and versatile positioning in assemblies

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these Grade 5 steel hex head screws provide critical solutions for machinery assembly, structural frameworks, and heavy equipment manufacturing. The 3/8"-24 UNF fine thread configuration delivers superior vibration resistance and clamping force retention, addressing common failure points in dynamic load environments. Combined with Rockwell C25 hardness and zinc plated finish, these fasteners maintain integrity in corrosive conditions while offering excellent torque-to-clamp load characteristics. The external hex drive facilitates quick installation and removal with standard tools, reducing assembly time and maintenance costs in production facilities and repair operations.

Specification Summary & Compliance

Manufactured to exacting Class 2A thread fit tolerances with UNF thread form ensuring precise engagement. Complies with ASME B18.2.1 and SAE J429 Grade 5 specifications for dimensional accuracy and mechanical properties. Meets environmental standards including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) regulations for restricted substances. The fully threaded design maintains consistent performance across the entire 1 1/4" length with right-hand threading for standard installation.