S-93085A839 2-56 x 3/4" FF-S-92, NAS662C2R12 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 70,000 psi tensile strength for reliable performance under high-stress applications
- Precise installation and flush finish with standard 100° countersink angle and flat head design
- Optimized drive engagement using Phillips No. 1 drive style for efficient torque transfer and reduced cam-out risk
- Consistent thread performance with Class 2A thread fit ensuring smooth assembly and interchangeability
- Full-length threading across the entire 3/4" length provides maximum grip and load distribution
- Compliance with major industrial standards including Fed. Spec. FF-S-92, RoHS 3, and REACH for guaranteed quality and safety
Professional Applications & Engineering Value
This 2-56 UNC flat head screw delivers critical engineering value in precision assembly applications where corrosion resistance and flush mounting are paramount. The passivated 18-8 stainless steel material prevents oxidation in humid or chemical-exposed environments, extending service life in electronics, aerospace, and marine equipment. The coarse UNC thread and Phillips No. 1 drive enable quick installation in tight spaces while maintaining 70,000 psi tensile strength for secure fastening in vibration-prone assemblies. The fully threaded 3/4" length ensures maximum thread engagement in thin materials, solving common pull-out failures in sheet metal and plastic components.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with UNC coarse threads and right-hand thread direction. Complies with Fed. Spec. FF-S-92 (NAS662C2R12) for dimensional consistency and mechanical properties. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in regulated industries. Features standard 100° countersink angle and fully threaded design per industrial specifications.
