S-91253A146 6-32 x 3/8" ASTM F835 Alloy Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with black-oxide coating, ideal for harsh industrial environments.
• High tensile strength of 130,000 psi ensures reliable performance in demanding mechanical applications.
• Precision Class 3A thread fit provides superior engagement and vibration resistance.
• Rockwell C39 hardness offers excellent durability and wear resistance over repeated use.
• Standard 82° countersink angle allows for flush mounting in various materials.
• Hex drive (5/64") design enables secure tool engagement and efficient installation.
• Full threading ensures maximum grip and load distribution along the entire length.

Professional Applications & Engineering Value

These 6-32 UNC flat head screws are engineered from black-oxide alloy steel to address critical industrial fastening challenges, such as vibration loosening and corrosion in machinery assemblies. The coarse UNC thread and Class 3A fit provide quick installation and high clamping force, reducing assembly time while maintaining joint integrity. Ideal for industrial equipment, automotive components, and electronic enclosures, these screws offer a reliable solution where flush mounting and high-strength retention are essential. The combination of 130,000 psi tensile strength and Rockwell C39 hardness ensures long-term performance under dynamic loads, minimizing maintenance needs and downtime.

Specification Summary & Compliance

This product adheres to Class 3A thread tolerance per UNC standards, with a length of 3/8" and full threading. It meets ASME B18.3 and ASTM F835 specifications for dimensional accuracy and performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions are upheld.