S-90303A060 8-32 x 3/8" ASME B18.3, ASTM A574 Nylon-Tip Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Surface Protection: Non-marring nylon tip prevents damage to sensitive surfaces during installation and use
• Exceptional Strength: 180,000 psi tensile strength and Rockwell C39 hardness ensure reliable performance in demanding applications
• Corrosion Resistance: Black-oxide finish on alloy steel provides enhanced durability and protection against environmental factors
• Precision Fit: Class 3A thread tolerance delivers superior engagement and vibration resistance in critical assemblies
• Wide Temperature Range: Nylon tip maintains integrity across -50° to 250°F (-45° to 121°C) for diverse operating environments
• Secure Installation: Hex socket drive with 9/64" size prevents cam-out and ensures proper torque application
• Full Thread Engagement: Fully threaded design maximizes holding power and distribution of clamping forces

Professional Applications & Engineering Value

This 8-32 UNC thread socket head cap screw addresses critical challenges in precision assembly applications where surface protection and reliable fastening are paramount. The black-oxide alloy steel construction combined with Class 3A thread fit ensures vibration-resistant performance in machinery, electronics, and automotive components. The non-marring nylon tip is specifically engineered to prevent surface damage on finished products, delicate materials, and painted surfaces while maintaining sealing capability. The coarse UNC thread profile facilitates quicker installation and superior resistance to loosening under dynamic loads. These socket head cap screws deliver exceptional value in applications requiring repeated assembly/disassembly without compromising surface integrity or fastener performance.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with material compliance to ASTM A574, this socket head cap screw features precision UNC coarse threads with Class 3A tolerance for superior fit. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets. The combination of right-hand thread direction, fully threaded design, and standardized hex drive configuration guarantees interchangeability and reliable performance in industrial applications.