S-91251A952 3-48 x 5/8" 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 applications, reducing the risk of fastener failure.
- Precision Class 3A thread fit guarantees tight tolerances and secure fastening, minimizing assembly errors and improving joint integrity.
- Black-oxide surface treatment on alloy steel provides enhanced corrosion resistance, extending service life in harsh industrial environments.
- High hardness (Rockwell C37) offers superior wear resistance, maintaining thread integrity through repeated use and disassembly.
- Coarse UNC threading allows for quicker installation and reduced cross-threading risks, speeding up assembly processes.
- Hex socket drive design enables high torque application with standard tools, ensuring firm seating and vibration resistance.
- Full threading along the 5/8" length provides consistent grip and adjustability, accommodating various material thicknesses.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, these black-oxide alloy steel socket head cap screws address common challenges like vibration loosening and corrosion. The 3-48 UNC coarse thread and Class 3A fit deliver precise alignment and robust clamping force, critical in machinery, automotive, and precision equipment assemblies. The ASTM A574 compliant manufacturing ensures consistent quality, while the hex drive allows efficient installation in confined spaces. Ideal for applications requiring high tensile strength and durability, these screws reduce maintenance needs and enhance operational reliability in mechanical systems.
Specification Summary & Compliance
This fastener adheres to Class 3A thread fit for tight dimensional accuracy and UNC coarse thread standards. It meets ASTM A574 specifications for alloy steel socket head cap screws and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe and sustainable use in global markets.
