S-91771A059 0-80 x 1/2" 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
- Exceptional corrosion resistance with passivated 18-8 stainless steel construction for long-lasting performance in harsh environments
- Superior holding power with 80,000 psi tensile strength and Rockwell B80 hardness for reliable fastening in demanding applications
- Precise thread engagement with Class 2A fit and UNF fine threads ensuring secure, vibration-resistant connections
- Optimal flush mounting featuring a standard flat head with 82° countersink angle for seamless surface integration
- Efficient installation with Phillips No. 0 drive providing positive torque transfer and reduced cam-out risk
- Full-threaded design maximizing grip length and load distribution across the entire 1/2" fastener
- Regulatory compliance assurance meeting ASME B18.6.3, RoHS 3, and REACH standards for global industrial use
Professional Applications & Engineering Value
These 0-80 UNF flat head Phillips machine screws deliver critical engineering solutions where corrosion resistance and high-strength fastening are paramount. The passivated 18-8 stainless steel construction provides exceptional protection against oxidation and chemical exposure, making them ideal for industrial equipment, electronic enclosures, and precision machinery. The UNF fine thread configuration with Class 2A fit ensures precise thread engagement in tapped holes, preventing loosening under vibration while the 82° countersink angle allows for flush mounting in applications where surface clearance is critical. The combination of 80,000 psi tensile strength and fully threaded design provides reliable clamping force across the entire fastener length, addressing common failure points in high-stress assemblies.
Specification Summary & Compliance
This 0-80 UNF flat head screw maintains precise Class 2A thread fit tolerances per UNF standards with right-hand fine threading and 1/2" length. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and performance. The product is certified RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting current environmental regulations for hazardous substance restrictions.
