S-91771A165 1-72 x 3/16" 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 tensile strength rated at 80,000 psi for reliable performance in demanding applications
- Precise Class 2A thread fit ensures smooth installation and secure fastening with UNF fine threads
- Optimized flush mounting with standard flat head profile and 82° countersink angle for seamless surface integration
- Enhanced driving efficiency through Phillips No. 0 drive design, reducing cam-out risks during installation
- Full regulatory compliance with ASME B18.6.3, RoHS 3, and REACH standards for global industrial use
- Consistent hardness at Rockwell B80 maintains structural integrity through repeated assembly cycles
Professional Applications & Engineering Value
These 1-72 UNF flat head screws deliver critical engineering solutions where space constraints and corrosion resistance are paramount. The passivated 18-8 stainless steel construction provides exceptional protection against oxidation and chemical exposure, making them ideal for electronic enclosures, precision instrumentation, and marine components. The UNF fine threading offers superior vibration resistance compared to coarse threads, while the fully threaded design ensures maximum grip length in thin materials. The 82° countersink angle and flat head profile create flush surface finishes that prevent snagging in automated assembly lines. These machine screws solve common industrial challenges including galvanic corrosion, thread stripping, and maintenance accessibility in confined spaces.
Specification Summary & Compliance
Manufactured to ASME B18.6.3 specifications with Class 2A thread fit tolerance for precision assembly. The 1-72 UNF fine thread configuration maintains consistent pitch accuracy. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety. Right-hand threading follows industry standards for predictable installation. All dimensional characteristics including 3/16" length, 0.137" head diameter, and 0.043" head height maintain strict manufacturing consistency.
