S-90342A121 8-32 x 1" Alloy Steel Socket Head Screws with Split Lock Washer

Key Features & Benefits at a Glance

• Exceptional tensile strength of 180,000 psi ensures reliable performance in high-stress industrial applications.
• Superior corrosion resistance from the black-oxide finish on alloy steel, extending service life in demanding environments.
• Secure anti-loosening performance with the integrated split lock washer, maintaining clamp load under vibration.
• Precise Class 3A thread fit for smooth assembly and consistent engagement in UNC coarse threaded applications.
• High hardness rating of Rockwell C39 provides excellent wear resistance and durability.
• Hex socket drive design allows for high torque application and easy installation in confined spaces.
• Full threading along the 1" length offers maximum adjustment flexibility and holding power.

Professional Applications & Engineering Value

This black-oxide alloy steel socket head cap screw with integrated split lock washer addresses critical vibration-induced loosening challenges in industrial machinery, automotive assemblies, and heavy equipment. The combination of 180,000 psi tensile strength and Rockwell C39 hardness ensures reliable performance under dynamic loads, while the UNC coarse threads with Class 3A fit provide rapid installation and secure fastening. The black-oxide surface treatment enhances corrosion resistance without compromising dimensional accuracy, making these socket head cap screws ideal for applications requiring both mechanical integrity and environmental protection.

Specification Summary & Compliance

Manufactured to precise Class 3A thread fit standards with UNC coarse thread spacing and right-hand thread direction. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Features include: 8-32 thread size, 1" fully threaded length, 9/64" hex drive, and split lock washer with 0.243" OD and 3/64" thickness.