S-91251A288 10-32 x 1 7/8" ASTM A574 Alloy Steel Socket Head Screws
Alloy Steel Socket 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 tensile strength of 170,000 psi ensures reliable performance in high-stress industrial applications, reducing the risk of fastener failure.
- Class 3A thread fit provides superior precision and tighter tolerances for secure, vibration-resistant assemblies in critical machinery.
- Black-oxide coating on alloy steel offers enhanced corrosion resistance, extending service life in demanding environments.
- Partially threaded design with 7/8" minimum thread length allows for optimal grip and adjustment flexibility in varied material thicknesses.
- Hex socket drive (5/32" size) enables easy installation with standard tools, minimizing stripping and improving assembly efficiency.
- Compliance with ASTM A574, RoHS 3, and REACH guarantees material consistency and environmental safety for global supply chain integration.
- Rockwell C37 hardness ensures durability and resistance to wear, maintaining thread integrity over repeated use.
Professional Applications & Engineering Value
These 10-32 UNF socket head cap screws are engineered to address common industrial challenges, such as vibration loosening and material fatigue. The fine UNF threads and Class 3A fit provide excellent clamping force and alignment in precision equipment, reducing maintenance needs. Made from black-oxide alloy steel, they resist corrosion in humid or chemical-exposed settings, ideal for automotive, aerospace, and heavy machinery assemblies. The partially threaded shank allows for focused stress distribution, preventing joint failure in dynamic loads. By meeting ASTM A574 specifications, these screws ensure consistent quality for OEM and MRO applications, enhancing operational reliability.
Specification Summary & Compliance
This product adheres to Class 3A thread tolerances per UNF standards, ensuring precise fit and interchangeability. Manufacturing follows ASTM A574 for material and mechanical properties, with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental safety and material restrictions adherence.
