S-96640A256 2-56 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 Black-Oxide 18-8 Stainless Steel construction, ideal for harsh industrial environments
- Exceptional holding power from 80,000 psi tensile strength and Rockwell B80 hardness for reliable fastening in demanding applications
- Optimized flush mounting through undercut flat head design with 82° countersink angle, preventing surface protrusion
- Enhanced installation efficiency with Phillips No. 1 drive and coarse UNC threading for quick, secure engagement
- Consistent thread performance through Class 2A thread fit and full threading along the entire 1/4" length
- Reduced maintenance requirements thanks to durable material properties and compliant surface treatment
- Broad application compatibility meeting ASME B18.6.3 standards for reliable interchangeability
Professional Applications & Engineering Value
These Black-Oxide 18-8 Stainless Steel flat head screws address critical engineering challenges in industrial assembly where corrosion resistance and flush surface mounting are paramount. The undercut flat head profile combined with the 82° countersink angle ensures seamless integration into components without protrusion, while the 2-56 UNC coarse thread provides rapid installation and superior vibration resistance in machinery, electronics, and automotive applications. The fully threaded design maximizes grip length, distributing stress evenly across the fastened joint. With 80,000 psi tensile strength and Rockwell B80 hardness, these Phillips machine screws maintain integrity under dynamic loads, making them ideal for precision equipment where reliability cannot be compromised.
Specification Summary & Compliance
Manufactured to exacting Class 2A thread fit tolerances with unified coarse 2-56 UNC threading and right-hand direction. Full compliance with ASME B18.6.3 manufacturing specifications ensures dimensional consistency. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for safe use in regulated industries.
