S-91772A130 5-40 x 5/8" 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
- Superior corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh industrial environments
- Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing performance
- Optimized installation efficiency through Phillips No. 2 drive design that prevents cam-out during high-torque applications
- Precise thread engagement with Class 2A thread fit ensuring consistent fastening and vibration resistance
- Full-threaded design providing maximum grip length and uniform stress distribution across the entire fastener
- Regulatory compliance assurance meeting ASME B18.6.3 manufacturing standards for dimensional accuracy and performance
- Environmental responsibility with RoHS 3 and REACH compliance for safe use in regulated industries
Professional Applications & Engineering Value
These 5-40 UNC coarse thread screws with passivated 18-8 stainless steel construction deliver critical corrosion protection where moisture, chemicals, or outdoor exposure would compromise ordinary fasteners. The fully threaded pan head design ensures maximum thread engagement in thin materials and tight spaces, while the Phillips No. 2 drive provides reliable torque transmission without specialized tools. Engineered for industrial machinery, electronic enclosures, and automotive assemblies, these rounded head screws maintain clamping force under vibration and thermal cycling. The coarse UNC threading enables rapid installation and superior pull-out resistance in softer materials, making them ideal for high-volume production environments where both speed and reliability are paramount.
Specification Summary & Compliance
Manufactured to ASME B18.6.3 specifications with Class 2A thread fit tolerance for consistent mating with Class 2B internal threads. The 5-40 UNC coarse thread configuration provides optimal performance in most assembly applications. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations ensures these fasteners meet international standards for hazardous substance restrictions and chemical safety.
