S-91771A098 3-48 x 5/8" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws
Stainless Steel Phillips Flat Head 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 80,000 PSI tensile strength and Rockwell B80 hardness for reliable load-bearing performance
- Precision thread engagement through Class 2A thread fit and UNC coarse threading ensures secure fastening and vibration resistance
- Flush mounting capability with standard 82° countersink angle and flat head design for seamless surface integration
- Optimized drive efficiency using Phillips No. 1 drive style for controlled torque application and reduced cam-out risk
- Full thread coverage along the 5/8" length provides maximum grip and uniform stress distribution
- Regulatory compliance assurance meeting ASME B18.6.3, RoHS 3, and REACH standards for quality and environmental safety
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these 3-48 UNC flat head screws deliver critical performance advantages in machinery assembly, electronic enclosures, and precision equipment. The passivated 18-8 stainless steel construction provides inherent corrosion resistance, eliminating failure risks in humid or chemically aggressive environments. The combination of coarse UNC threading and Class 2A thread fit ensures rapid installation and reliable vibration resistance, while the 82° countersink angle creates flush surfaces that prevent snagging in automated production lines. The fully threaded design maximizes shear strength distribution, making these Phillips drive screws ideal for applications requiring consistent clamping force across the entire fastener length.
Specification Summary & Compliance
This flat head screw maintains precision Class 2A thread fit tolerances per UNC standards with complete 5/8" length threading. Manufacturing compliance is verified under ASME B18.6.3 specifications, while environmental regulations including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) ensure material safety and restricted substance compliance for global industrial applications.
