S-92210A108 4-40 x 3/8" 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
- Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
- Exceptional tensile strength rated at 70,000 psi ensures reliable, long-lasting fastening performance under heavy loads
- Precision Class 3A thread fit provides superior engagement and vibration resistance in critical applications
- Hex drive design with 1/16" drive size enables secure installation and removal with standard tools
- Flat head profile with 82° countersink angle allows for flush mounting in various materials
- Full threading along the 3/8" length ensures maximum grip and holding power
- Comprehensive compliance with ASME B18.3 standards and environmental regulations for quality assurance
Professional Applications & Engineering Value
These 4-40 UNC flat head screws deliver exceptional engineering value in demanding industrial applications where corrosion resistance and reliable fastening are critical. The combination of 18-8 stainless steel material and passivated finish provides superior protection against rust and chemical exposure, making them ideal for machinery, electronic enclosures, and outdoor equipment. The Class 3A thread fit with coarse thread spacing ensures quick assembly and superior vibration resistance, while the hex drive style allows for high-torque installation without stripping. With Rockwell B55 hardness and 70,000 psi tensile strength, these screws maintain integrity under mechanical stress, solving common failure points in industrial fastening systems.
Specification Summary & Compliance
These flat head screws feature precise Class 3A thread fit per UNC standards with coarse thread spacing and right-hand threading. Manufacturing complies with ASME B18.3 specifications for dimensional accuracy and performance. The products are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors.
