S-91783A123 5-40 x 3/16" ASME B18.6.3 Stainless Steel Round Head Slotted Screws
Stainless Steel Round Head Slotted 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 thanks to 18-8 stainless steel construction and passivated finish, ideal for harsh environments
- Exceptional mechanical strength with 100,000 psi tensile strength and Rockwell B100 hardness for reliable load-bearing performance
- Precision thread engagement with Class 2A thread fit and UNC coarse threads ensuring secure fastening and vibration resistance
- Easy installation and removal via standard slotted drive design, compatible with common hand tools
- Full thread coverage along the 3/16" length provides maximum grip and uniform stress distribution
- Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards (RoHS 3, REACH)
- Versatile rounded head profile offers a finished appearance while minimizing snagging in assembled applications
Professional Applications & Engineering Value
These 5-40 UNC rounded head slotted screws deliver critical reliability in demanding industrial settings where corrosion resistance and mechanical integrity are paramount. The 18-8 stainless steel material, enhanced by passivated finish, effectively resists oxidation and chemical exposure in marine, food processing, and outdoor equipment. The coarse thread design and Class 2A thread fit ensure rapid assembly with reduced cross-threading risks, while the fully threaded 3/16" length maximizes holding power in thin materials and tight spaces. Engineered to ASME B18.6.3 standards, these screws provide consistent performance in machinery, electronic enclosures, and precision instruments where vibration loosening and material degradation are common concerns.
Specification Summary & Compliance
This rounded head screw features a 5-40 UNC coarse thread with Class 2A thread fit per standard inch system tolerances. Manufacturing and dimensional compliance adhere to ASME B18.6.3 specifications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions are met for global industrial supply chains.
