S-91251A472 3/8"-24 x 2 3/4" 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
- Superior corrosion resistance with black-oxide coating, extending service life in demanding industrial environments.
- Exceptional tensile strength of 170,000 psi for reliable performance under high-stress applications.
- Precise Class 3A thread fit ensures secure, vibration-resistant fastening in critical assemblies.
- Fine thread spacing provides improved adjustment accuracy and better load distribution.
- Hex socket drive design allows for high-torque installation with reduced risk of stripping.
- Partially threaded shank offers optimal grip length while minimizing unnecessary thread engagement.
- Comprehensive compliance with ASTM A574, RoHS 3, and REACH standards for guaranteed quality and safety.
Professional Applications & Engineering Value
This 3/8"-24 UNRF Socket Head Cap Screw delivers exceptional engineering value in industrial applications where precision and reliability are paramount. The black-oxide alloy steel construction provides superior corrosion protection while maintaining the Rockwell C37 hardness necessary for repeated use in high-vibration environments. The fine thread spacing and Class 3A thread fit ensure precise alignment and secure fastening in machinery, automotive systems, and heavy equipment where loosening could cause catastrophic failure. The partially threaded design allows for optimal clamp load distribution while the hex socket drive accommodates high-torque applications in confined spaces, making it ideal for assembly lines and maintenance operations requiring dependable, long-lasting fastening solutions.
Specification Summary & Compliance
Manufactured to ASTM A574 specifications with Class 3A thread fit precision and UNRF fine thread profile. The screw features a 2 3/4" length with 1 1/4" minimum thread length, 5/16" hex drive, and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. All dimensions conform to inch system measurements for compatibility with standard industrial equipment.
