S-91771A926 2-56 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 of 80,000 psi ensures reliable fastening under high-stress conditions
- Optimized drive engagement with Phillips No. 1 drive for efficient installation and reduced cam-out risk
- Precise Class 2A thread fit guarantees consistent performance and easy assembly in UNC coarse threading applications
- Full threading design provides maximum grip and load distribution across the entire fastener length
- Standard 100° countersink angle enables flush mounting for clean, professional finishes
- Comprehensive compliance with ASME B18.6.3, RoHS 3, and REACH standards ensures regulatory acceptance
Professional Applications & Engineering Value
These 2-56 UNC flat head Phillips screws deliver critical performance advantages in precision assembly applications where material integrity and corrosion resistance are paramount. The passivated 18-8 stainless steel construction provides excellent protection against oxidation and chemical exposure, making them ideal for electronics enclosures, machinery components, and marine equipment. The combination of 80,000 psi tensile strength and Rockwell B80 hardness ensures these fasteners maintain clamping force under vibration and thermal cycling. The fully threaded design with coarse UNC spacing offers superior pull-out resistance in softer materials, while the Phillips No. 1 drive enables efficient installation in space-constrained applications common in manufacturing and maintenance operations.
Specification Summary & Compliance
Manufactured to exacting ASME B18.6.3 specifications with Class 2A thread fit tolerances for consistent performance. Features UNC coarse threading with right-hand direction and standard 100° countersink angle. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial applications requiring restricted substance control.
