S-90044A229 2 1/4"-8 x 8" 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 industrial applications, preventing fastener failure.
- Superior corrosion resistance from the black-oxide finish on alloy steel extends service life in harsh environments, reducing maintenance needs.
- High hardness rating (Rockwell C37) provides excellent wear resistance and durability under repetitive loads.
- Coarse UN threads with Class 2A fit allow for quick assembly and secure fastening, minimizing cross-threading risks.
- Partially threaded design offers precise clamping control, ideal for applications requiring specific grip lengths.
- Large 1 3/4" hex drive enables high torque application with standard tools, ensuring tight and secure installations.
- Compliance with ASTM A574, RoHS 3, and REACH guarantees material consistency and environmental safety for global industrial use.
Professional Applications & Engineering Value
This Socket Head Cap Screw is engineered to address critical challenges in heavy machinery, construction, and automotive sectors where vibration and high loads are common. The black-oxide alloy steel construction combats rust and oxidation, prolonging component life in outdoor or humid conditions. Its coarse thread and Class 2A thread fit facilitate rapid installation with reduced galling, while the partially threaded rod design ensures optimal stress distribution. Ideal for securing large structural frames, industrial equipment, and precision assemblies, this screw delivers consistent performance under extreme pressures, backed by ASTM A574 standards for reliability in demanding applications.
Specification Summary & Compliance
This product adheres to Class 2A thread fit tolerances per UN standards, ensuring precise thread engagement. It meets ASTM A574 specifications for high-strength alloy steel socket head cap screws, with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and suitable for international industrial use.
