S-91251A044 3/4"-16 x 2" 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 (170,000 psi) ensures reliable performance in high-stress industrial applications, reducing failure risks.
- Black-oxide coating on alloy steel provides enhanced corrosion resistance, extending service life in harsh environments.
- Class 3A thread fit with UNRF fine threads delivers precise, secure fastening with minimal vibration loosening.
- Hex socket drive (5/8") and standard head profile allow for easy installation and removal with standard tools, saving time.
- Rockwell C37 hardness offers excellent wear resistance, maintaining integrity under repeated use.
- Full threading and right-hand direction enable consistent grip and straightforward assembly in various setups.
- Compliance with ASTM A574, RoHS 3, and REACH guarantees material safety and meets rigorous industry standards.
Professional Applications & Engineering Value
This Black-Oxide Alloy Steel Socket Head Cap Screw is engineered to address critical challenges in heavy-duty machinery, automotive, and construction sectors. Its high tensile strength (170,000 psi) and Rockwell C37 hardness prevent stripping and deformation under extreme loads, while the UNRF fine thread with Class 3A fit ensures tight, vibration-resistant connections in precision assemblies. The black-oxide surface treatment combats rust and corrosion, ideal for outdoor or humid conditions. With a 5/8" hex drive and fully threaded design, it simplifies maintenance and reduces downtime, making it a reliable choice for engineers seeking durability and compliance with ASTM A574 standards.
Specification Summary & Compliance
This socket head cap screw features a 3/4"-16 UNRF fine thread with Class 3A fit, ensuring high precision and interchangeability. It adheres to ASTM A574 specifications for material and manufacturing, with dimensions including a 2" length, 1 1/8" head diameter, and 3/4" head height. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental standards for global industrial use.
