S-91794A125 5-40 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
- Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
- Exceptional mechanical strength delivering 70,000 psi tensile strength and Rockwell B55 hardness for reliable, long-term fastening
- Precision threading with Class 2A fit and UNC coarse thread profile ensures consistent engagement and reduces cross-threading risks
- Optimized head design featuring a high, narrow fillister profile for deeper tool engagement and improved torque transmission
- Full threading along the 5/16" length provides maximum grip and uniform stress distribution across joined materials
- Compliance with ASME B18.6.3 standards guarantees dimensional accuracy and interchangeability in professional assemblies
- Environmental regulation compliance with RoHS 3 and REACH, ensuring safe use in regulated industries
Professional Applications & Engineering Value
These 5-40 UNC slotted fillister head screws are engineered to address critical fastening challenges in industrial settings. The 18-8 stainless steel material, combined with a passivated finish, provides excellent resistance to oxidation and chemical exposure, making them suitable for machinery, electrical enclosures, and outdoor equipment. The high, narrow rounded head profile allows for secure seating in counterbored holes, while the slotted drive offers compatibility with standard tools for quick installation. With a coarse thread and Class 2A fit, these screws ensure rapid assembly and reduced galling in metals and plastics, enhancing productivity in high-volume manufacturing and maintenance operations.
Specification Summary & Compliance
This screw features a 5-40 UNC thread with Class 2A dimensional tolerance and fully threaded 5/16" length. Manufacturing adheres to ASME B18.6.3 specifications for consistent quality. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety standards for global industrial use.
