S-91794A119 4-40 x 1 1/2" 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 environments
- Exceptional tensile strength of 70,000 psi ensures reliable, long-term fastening under high-stress conditions
- Precise Class 2A thread fit guarantees smooth assembly and consistent performance in UNC coarse threading applications
- Optimized fillister head design with high, narrow profile provides enhanced clearance and improved tool engagement
- Full threading along the 1-1/2" length offers maximum grip and uniform load distribution across the entire fastener
- Rockwell B55 hardness delivers excellent wear resistance and durability for repeated use
- Compliance with ASME B18.6.3 and environmental standards ensures quality, safety, and regulatory adherence
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these 4-40 UNC fillister head slotted screws provide a robust fastening solution where precision and reliability are critical. The 18-8 stainless steel material combined with a passivated finish significantly enhances corrosion resistance, making them suitable for electronics, machinery, and outdoor equipment exposed to moisture or chemicals. The high, narrow rounded head profile allows for deeper tool engagement and better clearance in confined spaces, while the coarse UNC threading ensures quick installation and strong holding power in various substrates. These screws are ideal for assembly lines, precision instruments, and maintenance operations requiring consistent, high-strength fasteners that meet stringent industry standards.
Specification Summary & Compliance
This screw features a 4-40 UNC coarse thread with Class 2A fit for standard tolerance and ease of assembly. It is manufactured in compliance with ASME B18.6.3 specifications, ensuring dimensional accuracy and performance reliability. The product is also RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, adhering to environmental and safety regulations for hazardous substances.
