S-91794A078 2-56 x 5/16" ASME B18.6.3 Stainless Steel Fillister Head Slotted Screws
Stainless Steel Fillister 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
- Corrosion-resistant performance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
- Exceptional tensile strength rated at 70,000 psi provides reliable fastening under high-stress conditions
- Optimized thread engagement through UNC coarse spacing and Class 2A fit ensures quick assembly and vibration resistance
- Enhanced driving control with slotted drive and high, narrow fillister head profile for precise torque application
- Full threading along 5/16" length maximizes grip strength and distribution across connected materials
- Consistent hardness (Rockwell B55) maintains dimensional stability and prevents deformation during installation
- Right-hand threading design simplifies installation using standard tools while reducing cross-threading risks
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these 2-56 UNC rounded fillister head screws address critical needs in machinery assembly, electronics enclosures, and precision equipment. The 18-8 stainless steel material combined with a passivated finish resists oxidation and chemical exposure, extending service life in humid or corrosive settings. The high, narrow rounded head profile offers a low-profile yet robust fastening solution where clearance is limited, while the coarse thread spacing and Class 2A fit prevent loosening under dynamic loads. These machine screws deliver reliable performance in automated production lines, reducing maintenance frequency and downtime.
Specification Summary & Compliance
This screw features precision UNC thread with Class 2A dimensional tolerance and fully threaded 5/16" length. Manufacturing adheres to ASME B18.6.3 specifications, ensuring interchangeability and quality. The product is confirmed compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, supporting sustainable procurement practices.
