S-91794A107 4-40 x 5/16" ASME B18.6.3 Stainless Steel Fillister Head Slotted Screws
Stainless Steel Fillister Head Slotted Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 Stainless Steel construction and passivated finish, ideal for harsh environments
- High tensile strength of 70,000 psi ensures reliable load-bearing capacity and joint integrity in demanding applications
- Rockwell B55 hardness provides excellent durability and resistance to wear during installation and use
- Class 2A thread fit offers consistent, reliable engagement with standard nuts and threaded holes
- Fully threaded design maximizes grip length and holding power across the entire fastener length
- High, narrow fillister head profile allows for deeper tool engagement and improved torque transmission
- Compliance with ASME B18.6.3 ensures dimensional accuracy and interchangeability with industry-standard components
Professional Applications & Engineering Value
This 4-40 UNC slotted fillister head screw delivers exceptional performance in precision assembly applications where corrosion resistance and mechanical strength are critical. The combination of 18-8 Stainless Steel material and passivated finish provides superior protection against oxidation and chemical exposure, making it ideal for electronics, instrumentation, and marine equipment. The high, narrow rounded head profile offers enhanced clearance for tools while maintaining a low-profile appearance. With coarse UNC threading and Class 2A fit, this screw ensures quick installation and reliable fastening in various materials, reducing assembly time and improving production efficiency in industrial manufacturing environments.
Specification Summary & Compliance
This fastener features precise 4-40 UNC coarse threads with Class 2A fit tolerance for consistent performance. Manufactured to ASME B18.6.3 specifications for dimensional accuracy and mechanical properties. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in restricted substance-sensitive applications. The fully threaded design maintains uniform engagement throughout the 5/16" length, while the slotted drive style provides compatibility with standard installation tools.
