S-94688A322 3/8"-16 x 2 1/2" ASME B18.2.1 Square Head Screws
Square Head Screws
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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 load-bearing capacity with 150,000 psi tensile strength for reliable performance in demanding applications
- Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in harsh environments
- Precise thread engagement with Unified Standard Class 3A fit ensuring secure fastening and vibration resistance
- Enhanced torque application through external square drive design for easier installation and removal
- Optimized for heavy-duty use with SAE Grade 8 classification meeting rigorous industrial standards
- Quick installation advantage with coarse UNC thread pattern that reduces cross-threading risks
- Full-threaded design providing consistent gripping strength along the entire 2½" length
Professional Applications & Engineering Value
This 3/8"-16 UNC Grade 8 square head screw delivers critical engineering solutions for industrial applications where high tensile strength and corrosion resistance are paramount. The zinc yellow-chromate plated steel construction provides exceptional protection against environmental degradation, while the external square drive enables superior torque transmission during installation. The coarse thread pattern ensures reliable performance in vibration-prone environments and facilitates quicker assembly in production settings. These fully threaded fasteners are engineered for heavy machinery, structural steel connections, and industrial equipment where 150,000 psi tensile strength is required to withstand extreme mechanical stresses without compromising joint integrity.
Specification Summary & Compliance
Manufactured to exacting ASME B18.2.1 specifications with Unified Standard Class 3A thread fit for precision engagement. Features 3/8"-16 UNC coarse threading with right-hand direction and full threading along the 2½" length. The square head design measures 1/4" in height and 9/16" in width, compatible with standard square drive tools. Constructed from high-strength steel with zinc yellow-chromate plating for enhanced corrosion protection, meeting industrial requirements for heavy-duty fastening applications.
