S-91864A044 6-40 x 1" 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 under high-stress conditions, reducing the risk of fastener failure.
- Precise Class 3A thread fit provides superior engagement and vibration resistance in critical assemblies, minimizing loosening over time.
- Black-oxide coating on alloy steel offers enhanced corrosion resistance, extending service life in demanding industrial environments.
- Hex socket drive (7/64") allows for high-torque installation and easy access in confined spaces, improving assembly efficiency.
- Fully threaded UNF fine thread design delivers consistent clamping force and secure fastening across the entire 1" length.
- Rockwell C37 hardness ensures excellent wear resistance and durability, maintaining thread integrity through repeated use.
- Compliance with ASTM A574, RoHS 3, and REACH guarantees material quality and environmental safety for global supply chain integration.
Professional Applications & Engineering Value
This black-oxide alloy steel socket head cap screw is engineered to address common industrial challenges such as vibration-induced loosening and corrosion in machinery, automotive, and precision equipment. The Class 3A UNF fine threads provide a tighter fit than standard coarse threads, ensuring secure fastening in high-vibration applications like motor mounts and assembly jigs. The hex drive design facilitates easy installation with standard tools, reducing assembly time while the fully threaded body distributes clamping force evenly. Ideal for high-strength industrial fastening where reliability and compliance with ASTM A574 standards are critical, this screw minimizes maintenance needs and downtime in demanding operations.
Specification Summary & Compliance
This socket head cap screw features a 6-40 UNF fine thread with Class 3A fit, ensuring precise dimensional accuracy per unified thread standards. It is manufactured from alloy steel under ASTM A574 specifications, with a black-oxide surface treatment for corrosion protection. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and safety requirements for industrial use.
