S-91251A493 8-36 x 3/8" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 psi ensures reliable performance in high-stress industrial applications.
• Class 3A fine thread fit provides superior precision and vibration resistance in demanding assemblies.
• Black-oxide coating on alloy steel enhances corrosion resistance and durability in harsh environments.
• Fully threaded design offers consistent clamping force and versatility across various material thicknesses.
• Hex socket drive (9/64") allows for high-torque installation with minimal head protrusion.
• Compliance with ASTM A574 guarantees material quality and manufacturing consistency.
• RoHS 3 and REACH environmental compliance ensures safe use in regulated industries.

Professional Applications & Engineering Value

This 8-36 UNF socket head cap screw is engineered for precision assemblies where high tensile strength and fine thread accuracy are critical. The black-oxide alloy steel construction resists corrosion while maintaining Rockwell C37 hardness, making it ideal for machinery, automotive, and aerospace components. Its fully threaded, right-hand design ensures secure fastening in tight spaces, reducing the risk of loosening under vibration. With a hex drive for efficient installation, this screw solves common challenges in high-strength assembly by combining durability with Class 3A thread fit for leak-proof and reliable connections.

Specification Summary & Compliance

This socket head cap screw features a 3/8" length with 8-36 UNF fine threads and Class 3A thread fit for precise tolerance. It meets ASTM A574 specifications for material integrity and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring safety and sustainability in industrial use.