S-96653A252 1/4"-20 x 1/2" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws
Stainless Steel Phillips Flat Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with PTFE-coated 18-8 stainless steel construction, ideal for harsh industrial environments
- Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing performance
- Easy installation and flush mounting thanks to the standard flat head with 82° countersink angle and No. 3 Phillips drive
- Wide compatibility and secure fastening with 1/4"-20 UNC coarse threads and Class 2A fit for consistent engagement
- Full-threaded design ensures maximum grip length and uniform stress distribution in assemblies
- Regulatory compliance meets ASME B18.6.3, RoHS 3, and REACH standards for safe, sustainable use
- Durable surface treatment reduces friction and wear, extending service life in dynamic applications
Professional Applications & Engineering Value
Engineered for demanding industrial settings, these PTFE-coated 18-8 stainless steel flat head screws deliver outstanding corrosion resistance and mechanical integrity. The 1/4"-20 UNC coarse thread and fully threaded design provide superior holding power in materials like metal, plastic, and composites, minimizing loosening under vibration. With an 82° countersink angle and Phillips drive, they enable quick, flush installations in confined spaces—common in machinery, automotive, and electronics assembly. The PTFE coating not only enhances durability but also reduces galling, making these screws ideal for repetitive disassembly and high-moisture environments where reliability is critical.
Specification Summary & Compliance
This flat head screw features precise Class 2A thread fit and adheres to ASME B18.6.3 manufacturing standards for dimensional accuracy. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material sustainability. The UNC coarse threading and specified hardness (Rockwell B70) support consistent performance in industrial fastening applications.
