S-91613A435 4-40 x 3/4" 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 316 Stainless Steel construction and passivated finish for extended service life in harsh environments
- Exceptional mechanical strength with 100,000 psi tensile strength and Rockwell B100 hardness for reliable performance under high stress
- Precision thread engagement through Class 2A thread fit and UNC coarse threading ensures secure fastening and vibration resistance
- Optimized head design with fillister-style rounded head provides excellent clearance and professional appearance
- Universal compatibility with standard slotted drive tools for easy installation and maintenance
- Full thread coverage along the 3/4" length maximizes grip strength and distribution of clamping force
- Regulatory compliance meets ASME B18.6.3 specifications and environmental standards including RoHS 3 and REACH
Professional Applications & Engineering Value
Engineered for demanding industrial environments, these 4-40 UNC rounded head screws combine 316 Stainless Steel material with passivated finish to deliver exceptional corrosion resistance in chemical processing, marine, and food-grade applications. The fillister head design with slotted drive provides superior torque transmission while maintaining a low-profile installation. The coarse UNC threading and Class 2A thread fit ensure rapid assembly and reliable performance in vibration-prone equipment. These fully threaded fasteners offer optimal load distribution across the entire 3/4" length, making them ideal for precision assemblies requiring consistent clamping force and dimensional stability in critical mechanical systems.
Specification Summary & Compliance
This 4-40 UNC screw features precise Class 2A thread fit tolerances and complies with ASME B18.6.3 manufacturing specifications. The product meets international regulatory requirements including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) compliance, ensuring environmental responsibility and workplace safety. Manufacturing standards guarantee dimensional accuracy for the 3/4" length, 0.183" head diameter, and proper thread geometry according to Unified National Coarse standards.
