S-90471A436 8-32 x 1 1/4" ASME B18.6.3 Steel Phillips Flat Head Screws
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 zinc-plated steel construction, extending service life in demanding industrial environments
- High-strength performance with 60,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing applications
- Effortless installation using standard Phillips No. 2 drive tools, reducing assembly time and labor costs
- Secure fastening with Class 2A thread fit and UNC coarse threads, preventing loosening under vibration
- Flush surface finish with 100° countersink angle and standard flat head profile for clean, professional installations
- Full-thread engagement across the 1-1/4" length, providing maximum grip strength in various material thicknesses
- Regulatory compliance meeting ASME B18.6.3, RoHS 3, and REACH standards for global industrial use
Professional Applications & Engineering Value
These 8-32 UNC flat head screws deliver exceptional engineering value in industrial assembly where vibration resistance and flush mounting are critical. The zinc-plated steel construction provides reliable corrosion protection for machinery, electrical enclosures, and metal fabrication applications. The coarse UNC threads and Class 2A thread fit ensure quick installation and secure fastening in various materials, while the standard flat head profile with 100° countersink angle creates seamless surfaces in countersunk holes. With 60,000 psi tensile strength and full threading, these Phillips drive screws maintain integrity under stress, making them ideal for automotive, manufacturing, and equipment maintenance where durability and compliance with ASME B18.6.3 standards are mandatory.
Specification Summary & Compliance
These flat head screws feature precise Class 2A thread fit with UNC coarse threads (8-32 size) and are manufactured to ASME B18.6.3 specifications for dimensional accuracy. The inch-system measurements include 1-1/4" length, 0.312" head diameter, and standard flat head profile with 100° countersink angle. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety and global market acceptance for industrial procurement.
