S-96653A249 1/4"-20 x 3/8" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with PTFE-coated 18-8 stainless steel construction, ideal for harsh industrial environments
• Reliable fastening performance with 80,000 psi tensile strength and Rockwell B70 hardness for high-stress applications
• Precise flush installation featuring an 82° countersink angle and undercut flat head design
• Effortless installation and removal with Phillips No. 3 drive and fully threaded UNC coarse thread pattern
• Consistent dimensional accuracy ensured by Class 2A thread fit for secure, vibration-resistant connections
• Compliance with strict industry standards including ASME B18.6.3, RoHS 3, and REACH for safe, regulated use
• Broad compatibility with standard 1/4"-20 threaded components in machinery and equipment assembly

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these PTFE-coated stainless steel flat head screws deliver exceptional durability where corrosion and chemical exposure are concerns. The 18-8 stainless steel base provides inherent rust resistance, while the PTFE coating further reduces friction and prevents galling during installation. The undercut flat head and 82° countersink angle ensure a flush, low-profile fit, minimizing protrusion in tight spaces. With a fully threaded UNC coarse thread design and Phillips drive, these screws offer quick, secure fastening in assembly lines, machinery, and electronic enclosures, reducing downtime and maintenance costs.

Specification Summary & Compliance

This screw meets ASME B18.6.3 specifications for dimensional consistency and performance. Threads conform to UNC coarse 1/4"-20 with Class 2A fit for reliable engagement. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions are met for industrial use.