S-94622A442 1/2"-20 x 1 11/32" AN8-12A Army-Navy Medium-Strength Steel Hex Head Screws
Army-Navy Medium-Strength Steel Hex 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
- Superior corrosion resistance with cadmium plating, extending service life in harsh industrial environments
- High tensile strength of 120,000 psi ensures reliable performance under heavy loads and vibration
- Precise Class 3A thread fit provides secure, tight connections with minimal risk of loosening
- External hex drive design allows for easy installation and removal with standard tools
- Rockwell C26 hardness offers excellent durability and resistance to wear and deformation
- Fine thread spacing (UNF) delivers enhanced clamping force and improved fatigue resistance
- AN8-12A specification compliance guarantees consistent quality for aerospace and demanding applications
Professional Applications & Engineering Value
This 1/2"-20 UNF hex head screw is engineered to address critical challenges in industrial assembly, where vibration resistance, corrosion protection, and high clamp load retention are paramount. The cadmium-plated steel construction provides a robust barrier against oxidation and chemical exposure, making it ideal for outdoor equipment, machinery, and aerospace components. With a fine UNF thread and Class 3A fit, it ensures precise engagement and minimizes the risk of thread stripping under dynamic stresses. The external hex drive facilitates quick installation in confined spaces, reducing assembly time while maintaining 120,000 psi tensile strength for heavy-duty fastening needs.
Specification Summary & Compliance
This screw adheres to AN8-12A specifications and features a Class 3A thread fit for tight dimensional accuracy in inch system measurements. It complies with UNF fine thread standards, with a thread size of 1/2"-20, right-hand direction, and partial threading. The cadmium finish meets common industry requirements for corrosion protection, while the material and manufacturing processes align with typical industrial fastener regulations, ensuring reliability in professional applications.
