S-91771A055 0-80 x 1/4" 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 for long-lasting performance in harsh environments
- Exceptional tensile strength rated at 80,000 psi ensures reliable fastening under high-stress conditions
- Precision thread engagement with Class 2A fit and UNF fine threads provides secure, vibration-resistant connections
- Optimized flush mounting with standard 82° countersink angle creates smooth, professional-looking surfaces
- Enhanced drive stability through Phillips No. 0 drive prevents cam-out and ensures consistent installation torque
- Full threading coverage along the entire 1/4" length maximizes grip strength and load distribution
- Industry compliance assurance meeting ASME B18.6.3 standards while being RoHS 3 and REACH compliant
Professional Applications & Engineering Value
These 0-80 UNF flat head Phillips screws deliver critical engineering solutions where space constraints and corrosion resistance are paramount. The passivated 18-8 stainless steel construction provides excellent protection against oxidation and chemical exposure, making them ideal for precision instruments, electronic enclosures, and medical devices. The fine UNF threading with Class 2A fit ensures minimal backlash and superior vibration resistance in dynamic applications. The standard 82° countersink angle allows for perfect flush mounting in machined components, while the Phillips drive system offers familiar, reliable installation. With full threading along the entire length, these fasteners distribute clamping forces evenly, preventing stress concentration points in critical assemblies.
Specification Summary & Compliance
Manufactured to exacting ASME B18.6.3 specifications with Class 2A thread fit tolerance ensuring precision engagement. The UNF 0-80 fine thread configuration provides superior holding power in thin materials. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Mechanical properties include Rockwell B80 hardness and 80,000 psi tensile strength for demanding applications. The standard 82° countersink angle and right-hand thread direction conform to industry-standard installation requirements.
