S-90471A255 8-32 x 5/16" ASME B18.6.3 Steel Phillips Flat Head Screws
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 zinc-plated steel construction, ensuring long-lasting performance in demanding industrial environments
- Exceptional tensile strength of 60,000 psi provides reliable fastening integrity for high-stress applications
- Rockwell B70 hardness rating delivers excellent wear resistance and durability against mechanical stress
- Precision Class 2A thread fit ensures smooth installation and consistent engagement with mating components
- Standard 100° countersink angle allows for flush mounting and clean aesthetic finishes
- Phillips No. 2 drive design enables efficient installation with common tools while reducing cam-out risk
- Full threading along entire 5/16" length maximizes grip strength and load distribution across the fastener
Professional Applications & Engineering Value
These 8-32 UNC flat head screws deliver critical engineering solutions where reliable fastening and surface-flush installation are paramount. The zinc-plated steel construction provides essential corrosion protection for industrial equipment, machinery assemblies, and electronic enclosures exposed to moderate environmental conditions. The coarse UNC thread profile combined with Class 2A tolerance ensures rapid installation and secure holding power in various materials including metals, plastics, and composites. The standard 100° countersink angle facilitates perfect flush mounting in pre-drilled applications, eliminating protrusions that could interfere with moving components or compromise safety. These Phillips drive screws are particularly valuable in assembly lines where speed, consistency, and tensile strength requirements must be consistently met.
Specification Summary & Compliance
Manufactured to exacting ASME B18.6.3 specifications with Class 2A thread fit tolerances for precision engagement. Features UNC coarse threads with right-hand direction and fully threaded 5/16" length. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors. Mechanical properties include 60,000 psi tensile strength and Rockwell B70 hardness for consistent performance in demanding applications.
