S-90273A144 6-32 x 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-term reliability in harsh industrial environments
• High tensile strength of 60,000 psi provides exceptional load-bearing capacity and resistance to mechanical failure
• Rockwell B70 hardness offers excellent durability and wear resistance for repeated assembly and disassembly
• Class 2A thread fit with UNC coarse threading enables quick, secure fastening and reduces cross-threading risks
• Standard 82° countersink angle and flat head design ensures flush mounting for streamlined surfaces and improved safety
• Full threading along the 1/4" length maximizes grip strength and distributes stress evenly across the fastener
• Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees consistent quality and environmental safety for global supply chains

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these zinc-plated steel flat head screws address critical challenges in machinery assembly, electrical enclosures, and metal fabrication. The UNC coarse thread design facilitates rapid installation in various materials, while the Phillips drive (No. 2 size) ensures efficient torque transfer without slippage. With a 60,000 psi tensile strength and Rockwell B70 hardness, they withstand vibrational stresses and heavy loads in automotive, aerospace, and construction sectors. The standard 82° countersink angle allows seamless integration into pre-drilled holes, minimizing protrusions and enhancing operational safety. Fully compliant with ASME B18.6.3 standards, these screws deliver reliable performance in high-precision engineering projects.

Specification Summary & Compliance

This 6-32 x 1/4" flat head screw features precise Class 2A thread fit per UNC specifications, ensuring consistent dimensional accuracy. It adheres to ASME B18.6.3 manufacturing guidelines for mechanical and dimensional integrity. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted hazardous substances. These certifications support sustainable procurement and international regulatory requirements.