S-91773A105 4-40 x 3/16" ASME B18.6.3 Stainless Steel Round Head Phillips Screws
Stainless Steel Round Head Phillips 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, ideal for harsh environments
- Reliable high-strength performance delivering 100,000 psi tensile strength for secure, long-lasting fastening
- Optimized thread engagement through fully threaded UNC coarse design and Class 2A fit, ensuring vibration resistance
- Effortless installation with No. 1 Phillips drive and rounded head profile, reducing assembly time
- Consistent dimensional accuracy meeting ASME B18.6.3 standards for interchangeability across applications
- Environmental compliance with RoHS 3 and REACH regulations, supporting sustainable manufacturing
- Versatile 3/16" length and right-hand threading for broad compatibility in industrial assemblies
Professional Applications & Engineering Value
These 4-40 UNC rounded head screws in 18-8 stainless steel address critical industrial needs for durability and precision. The passivated finish enhances corrosion resistance, making them suitable for electronics, machinery, and outdoor equipment where moisture or chemicals are present. With a fully threaded coarse design and Class 2A thread fit, they provide superior grip in soft materials or high-vibration settings, minimizing loosening. The Phillips drive and rounded head facilitate quick installation, reducing labor costs in automated or manual assembly lines. Ideal for securing panels, components, and enclosures, these screws ensure reliable performance in demanding industrial applications while meeting strict quality standards.
Specification Summary & Compliance
This product adheres to Class 2A thread fit and UNC coarse thread specifications per ASME B18.6.3, ensuring precise dimensional tolerances. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted substances. The screws are fully threaded with a right-hand direction and are designed for consistent performance in standardized industrial setups.
