S-90044A258 8-36 x 1 3/4" ASTM A574 Alloy Steel Socket Head Screws

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 in demanding applications.
• Class 3A thread fit provides superior precision and tighter tolerances, enabling secure, vibration-resistant connections in critical assemblies.
• Black-oxide coating on alloy steel offers enhanced corrosion resistance and a durable, non-reflective finish suitable for harsh industrial environments.
• Fine UNF thread spacing allows for finer adjustments and improved load distribution, ideal for precision engineering and machinery.
• Hex socket drive design with a 9/64" drive size facilitates easy installation and removal in confined spaces using standard tools.
• Partially threaded shank combines unthreaded stability with threaded grip, optimizing clamping force and reducing thread wear.
• Rockwell C37 hardness ensures long-term durability and resistance to deformation, maintaining integrity through repeated use.

Professional Applications & Engineering Value

This Black-Oxide Alloy Steel Socket Head Cap Screw is engineered to address common industrial challenges, such as vibration loosening and corrosion in machinery and equipment. The 8-36 UNF fine thread design provides superior holding power and precise adjustment in applications like automotive assemblies, aerospace components, and precision tools, where Class 3A thread fit minimizes backlash. The black-oxide surface treatment enhances durability against moisture and chemicals, extending service life in harsh conditions. With a partially threaded configuration, it ensures optimal clamping without compromising thread integrity, making it a reliable choice for high-strength industrial fasteners that demand consistent performance and compliance with rigorous standards.

Specification Summary & Compliance

This product adheres to precise dimensional tolerances, including a Class 3A thread fit for accuracy and UNF fine thread standards. It meets ASTM A574 specifications for high-strength alloy steel fasteners, ensuring consistent quality and performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it supports environmental safety and regulatory requirements in global markets.