S-91251A848 3/4"-10 x 3 1/4" 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
- Exceptional tensile strength of 170,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Superior corrosion resistance from the black-oxide finish extends service life in demanding industrial environments.
- Precise Class 3A thread fit provides excellent engagement and vibration resistance, minimizing loosening over time.
- High hardness (Rockwell C37) offers excellent wear resistance, maintaining thread integrity through repeated use.
- 5/8" hex drive design allows for high-torque installation with standard tools, speeding up assembly processes.
- Partially threaded shank provides optimal clamping force distribution while allowing for precise positioning.
- Compliance with ASTM A574 guarantees consistent quality and performance meeting industrial standards.
Professional Applications & Engineering Value
These black-oxide alloy steel socket head cap screws deliver critical performance advantages in heavy machinery, automotive assembly, and structural applications where vibration resistance and high clamp load are essential. The 3/4"-10 coarse thread (UNRC) configuration ensures rapid installation while maintaining superior holding power. The combination of 170,000 psi tensile strength and Rockwell C37 hardness provides exceptional resistance to both static and dynamic loading conditions. The black-oxide surface treatment offers enhanced corrosion protection without significantly altering dimensional tolerances, making these screws ideal for applications requiring both precision fit and environmental durability. The 5/8" hex drive accommodates standard industrial tools, facilitating efficient maintenance and assembly operations.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 3A thread fit for superior engagement and 3 1/4" length with 2" minimum thread length. These socket head cap screws conform to ASTM A574 specifications for alloy steel socket head cap screws and are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors.
