S-91251A151 6-32 x 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
- Precision Class 3A thread fit ensures secure fastening with minimal backlash in critical assemblies
- Rockwell C37 hardness provides excellent wear resistance and durability against repeated torque applications
- Standard hex socket drive allows for high-torque installation with common 7/64" hex tools
- Full threading along 3/4" length enables flexible positioning and maximum grip in various material thicknesses
- Comprehensive compliance with ASTM A574, RoHS 3, and REACH standards for quality assurance and environmental safety
Professional Applications & Engineering Value
This black-oxide alloy steel socket head cap screw delivers critical performance advantages in precision engineering applications where corrosion resistance and high tensile strength are paramount. The combination of 6-32 UNC coarse threads with Class 3A fit provides superior engagement in metals and engineered plastics, reducing the risk of cross-threading during assembly. The standard socket head profile with 7/64" hex drive accommodates high torque values without cam-out, making it ideal for machinery, automotive components, and electronic enclosures requiring flush mounting. The fully threaded design ensures consistent clamping force distribution across the entire 3/4" length, solving vibration-induced loosening challenges in dynamic industrial environments.
Specification Summary & Compliance
This fastener maintains precision Class 3A thread tolerances per UNC standards with coarse thread spacing for optimal engagement. Manufacturing conforms to ASTM A574 specification for alloy steel socket head cap screws, ensuring dimensional consistency and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting current environmental and safety standards for industrial use worldwide.
