S-90273A835 10-32 x 1 1/4" ASME B18.6.3 Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ensuring long-lasting performance in harsh industrial environments
• Enhanced fastening precision with Class 2A thread fit and UNF fine threading, providing secure, vibration-resistant connections
• High tensile strength of 60,000 psi and Rockwell B70 hardness for reliable load-bearing capacity in demanding applications
• Efficient flush-mount installation with standard 82° countersink angle and flat head design, ideal for streamlined surfaces
• Wide compatibility with Phillips No. 2 drive, enabling quick installation using common tools without stripping
• Full threading along the 1 1/4" length ensures maximum grip and uniform stress distribution across joined materials
• Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees adherence to industry safety and environmental standards

Professional Applications & Engineering Value

These 10-32 UNF flat head screws are engineered to address critical industrial fastening challenges, such as material fatigue and environmental degradation. The zinc-plated steel provides a durable barrier against rust and corrosion, extending service life in machinery, automotive assemblies, and electrical enclosures. The fine UNF threads and Class 2A fit deliver precise alignment and resistance to loosening under vibration, crucial for maintaining integrity in dynamic systems. With a fully threaded design and 82° countersink, they ensure seamless flush mounting in metal, plastic, or composite substrates, reducing protrusion risks and improving aerodynamic or aesthetic profiles. Ideal for OEM and MRO applications, these screws combine high tensile strength with regulatory compliance, offering a reliable solution for engineers prioritizing safety and durability.

Specification Summary & Compliance

This product adheres to Class 2A thread fit tolerances and UNF (Unified National Fine) thread standards, ensuring dimensional accuracy and interchangeability. Manufactured in accordance with ASME B18.6.3 specifications, it meets rigorous mechanical and design criteria. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) confirms the absence of hazardous substances, supporting sustainable and safe usage in global markets.