S-91772A517 4-40 x 2 1/4" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws
Stainless Steel Pan Head Phillips 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 passivated 18-8 stainless steel construction, ideal for harsh industrial environments
- High tensile strength of 70,000 psi ensures reliable performance under significant mechanical stress
- Fully threaded UNC coarse design provides faster installation and superior holding power in various materials
- Class 2A thread fit guarantees consistent, precise engagement with standard mating components
- Phillips No. 1 drive with rounded pan head offers secure tool engagement and reduced surface protrusion
- Comprehensive compliance with ASME B18.6.3, RoHS 3, and REACH ensures regulatory acceptance
- 2-1/4" length versatility accommodates diverse assembly requirements across multiple applications
Professional Applications & Engineering Value
Engineered for demanding industrial environments, these 4-40 UNC rounded pan head screws deliver exceptional value through their passivated 18-8 stainless steel composition and fully threaded coarse design. The combination provides superior corrosion resistance while the 70,000 psi tensile strength ensures structural integrity in high-stress assemblies. The Phillips No. 1 drive system enables efficient installation in machinery, electrical enclosures, and precision equipment where vibration resistance and long-term reliability are critical. Their coarse thread configuration prevents cross-threading and simplifies maintenance procedures, making them ideal for production lines and field service applications requiring repeated access.
Specification Summary & Compliance
This rounded head screw features precise Class 2A thread fit with UNC coarse threading (4-40 size) and maintains dimensional accuracy per ASME B18.6.3 specifications. The manufacturing process ensures compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, providing assurance for restricted substance management in industrial supply chains.
