S-92210A445 3/8"-24 x 4" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws
Stainless Steel Hex Drive 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
- Exceptional corrosion resistance with 18-8 stainless steel and passivated finish for long-lasting performance in harsh environments
- Superior thread engagement with Class 3A fit and UNF fine threads providing vibration resistance and reliable fastening
- High mechanical strength delivering 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications
- Optimal flush mounting with standard 82° countersink angle and flat head design for smooth surface finishes
- Secure installation enabled by hex drive (7/32") design preventing cam-out during high-torque applications
- Full thread coverage across the 4" length ensuring maximum grip strength and load distribution
- Regulatory compliance meeting ASME B18.3 standards and environmental regulations for global industrial use
Professional Applications & Engineering Value
This 3/8"-24 UNF flat head screw addresses critical engineering challenges in industrial assembly where vibration resistance and corrosion protection are paramount. The 18-8 stainless steel construction with passivated finish provides exceptional durability against moisture, chemicals, and temperature variations, making it ideal for machinery, marine equipment, and food processing applications. The Class 3A thread fit combined with UNF fine threading ensures precise alignment and maintains clamping force under dynamic loads, while the 82° countersink angle facilitates seamless integration into precision components. These features collectively prevent loosening, reduce maintenance frequency, and extend service life in high-stress industrial environments.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with Class 3A thread tolerance ensuring precision fit. The UNF (Unified National Fine) thread form with 24 TPI provides enhanced sealing capabilities. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for environmental safety. Full 4" length with complete threading maintains consistent mechanical properties throughout the fastener.
