S-90303A070 8-32 x 3/4" ASME B18.3, ASTM A574 Nylon-Tip Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Non-marring nylon tip prevents damage to sensitive surfaces during assembly, ideal for delicate materials and finished products.
• High tensile strength of 180,000 psi ensures reliable performance under extreme loads and vibrations in demanding industrial environments.
• Black-oxide coating on alloy steel provides enhanced corrosion resistance and a durable, low-glare finish for long-term use.
• Class 3A thread fit with UNC coarse spacing offers superior precision and ease of installation, reducing the risk of cross-threading.
• Wide temperature tolerance (-50° to 250° F) allows stable operation in varied climates and high-heat applications without tip degradation.
• Full compliance with ASME B18.3, RoHS 3, and REACH guarantees adherence to industry standards and environmental safety regulations.
• Hex drive design with standard socket head enables secure tool engagement and efficient torque application in confined spaces.

Professional Applications & Engineering Value

This 8-32 UNC thread socket head cap screw is engineered to address common industrial challenges such as surface protection and mechanical reliability. The black-oxide alloy steel construction, combined with a Rockwell C39 hardness, ensures exceptional durability and resistance to wear in high-stress assemblies. The non-marring nylon tip is critical for applications involving soft materials like plastics or coated metals, preventing scratches and maintaining product aesthetics. Its coarse thread spacing and Class 3A fit facilitate quick, precise installations in machinery, automotive components, and electronic enclosures, reducing assembly time and improving operational efficiency. Ideal for industrial applications requiring vibration resistance and consistent performance, this screw delivers long-term value by minimizing maintenance and replacement costs.

Specification Summary & Compliance

This product features precise Class 3A thread fit with UNC coarse spacing and right-hand thread direction, ensuring dimensional accuracy per ASME B18.3 specifications. It is manufactured from alloy steel under ASTM A574 guidelines and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety and environmental adherence. The fully threaded design and standardized socket head profile support consistent performance in technical applications.