S-91794A103 4-40 x 1/8" 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
- Exceptional corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments.
- Reliable high-strength performance offering 70,000 psi tensile strength and Rockwell B55 hardness for durable, long-lasting fastening.
- Precise and easy installation with Class 2A thread fit and coarse UNC threading, ensuring secure engagement and reduced assembly time.
- Optimized head design featuring a high, narrow rounded fillister head for improved clearance and a slotted drive for simple tool compatibility.
- Full thread coverage along the 1/8" length provides maximum grip and uniform load distribution in tight spaces.
- Compliance with industry standards including ASME B18.6.3, RoHS 3, and REACH, guaranteeing safety and regulatory adherence.
- Versatile right-hand threading with UNC coarse spacing for quick fastening in a wide range of machinery and equipment.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, these 4-40 UNC rounded fillister head slotted screws deliver superior performance in applications requiring corrosion resistance and mechanical reliability. The 18-8 stainless steel material combined with a passivated finish effectively counters oxidation and chemical exposure, extending service life in machinery, electronic enclosures, and automotive assemblies. The high, narrow rounded fillister head design allows for deeper tool engagement and better clearance in confined spaces, while the slotted drive ensures compatibility with standard tools for efficient maintenance. With a tensile strength of 70,000 psi and Class 2A thread fit, these screws provide consistent clamping force and reduce the risk of stripping, making them ideal for precision equipment and repetitive disassembly scenarios.
Specification Summary & Compliance
This screw adheres to precise dimensional tolerances with a Class 2A thread fit and UNC coarse threading (4-40 size), ensuring reliable performance in industrial fastening. It meets ASME B18.6.3 specifications for consistency and safety, and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for global markets and environmentally conscious applications.
