S-90044A202 10-32 x 1 3/8" ASME B18.3, 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 for secure, vibration-resistant assemblies in critical machinery and equipment.
• Black-oxide coating on alloy steel offers enhanced corrosion resistance, extending service life in harsh industrial environments without compromising structural integrity.
• Rockwell C37 hardness delivers excellent wear resistance and durability, maintaining thread integrity through repeated use and high-torque installations.
• Partially threaded design with 10-32 UNF fine threads allows for precise clamping force control and improved load distribution in assembled components.
• 5/32" hex drive and standard socket head enable easy installation with common tools, reducing assembly time and minimizing strip-out risks.
• Compliance with ASME B18.3 and ASTM A574 standards guarantees consistent quality, dimensional accuracy, and interoperability in regulated industrial settings.

Professional Applications & Engineering Value

This black-oxide alloy steel socket head cap screw is engineered to address common challenges in precision assembly, such as vibration loosening and corrosion-induced degradation. The 10-32 UNF fine thread configuration, combined with a Class 3A thread fit, ensures minimal backlash and secure fastening in high-vibration environments like automotive engines, robotics, and aerospace systems. The partially threaded rod type allows for optimal stress distribution, preventing joint failure in dynamic loads. With a Rockwell C37 hardness and 170,000 psi tensile strength, it withstands extreme mechanical stresses while the black-oxide surface resists rust and chemical exposure. Ideal for industrial fasteners in machinery, electronics, and automation, this screw provides long-term reliability and reduces maintenance cycles.

Specification Summary & Compliance

This socket head cap screw features a 10-32 UNF thread size with Class 3A thread fit for high precision, a length of 1 3/8", and a partially threaded design. It conforms to ASME B18.3 and ASTM A574 manufacturing specifications, ensuring dimensional accuracy and performance consistency. The product is RoHS 3 (2015/863/EU) Compliant, meeting environmental regulations for hazardous substance restrictions, and is suitable for use in regulated industries requiring adherence to strict quality and safety standards.