S-91251A723 1/2"-13 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
- Exceptional durability with 170,000 psi tensile strength and Rockwell C37 hardness for reliable performance in demanding applications
- Superior corrosion resistance thanks to the black-oxide finish, extending service life in harsh industrial environments
- Precise thread engagement with Class 3A thread fit ensuring secure, vibration-resistant connections
- High-torque capability from the 3/8" hex drive and standard socket head profile for easy installation with standard tools
- Versatile partial threading allowing for both clamping and alignment functions in assembly operations
- Compliance assurance meeting ASTM A574 specifications and RoHS/REACH environmental standards
- Optimized for coarse thread applications with 1/2"-13 UNC right-hand threads providing quick assembly in various materials
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these black-oxide alloy steel socket head cap screws deliver exceptional performance where reliability is critical. The combination of high tensile strength (170,000 psi) and Rockwell C37 hardness ensures these fasteners withstand extreme mechanical stresses in machinery, automotive, and construction equipment. The Class 3A thread fit provides superior precision for vibration-prone environments, while the black-oxide surface treatment offers enhanced corrosion resistance without compromising dimensional accuracy. The 3/8" hex drive design allows for high-torque installation in confined spaces, making these partially threaded screws ideal for applications requiring both clamping force and precise component alignment.
Specification Summary & Compliance
This socket head cap screw features precise Class 3A thread fit with 1/2"-13 UNC coarse threads and right-hand thread direction. Manufacturing complies with ASTM A574 specifications for alloy steel socket head cap screws. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting current environmental regulations for industrial use.
