S-90909A516 8-32 x 1/2" Stainless Steel Flanged Button Head Hex-Drive Screws
Stainless Steel Flanged Button Head Hex-Drive 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
- Exceptional corrosion resistance in harsh environments due to 316 Stainless Steel construction and passivated finish.
- Superior thread engagement and vibration resistance from Class 3A UNC coarse threading, ensuring reliable fastening.
- High-strength performance under load with a tensile strength of 70,000 psi and Rockwell B70 hardness.
- Secure, flush installation with a wide, rounded button head style and integrated flange for increased bearing surface.
- Efficient installation and removal using a standard 3/32" hex drive, reducing assembly time.
- Full thread coverage along the 1/2" length for maximum grip and holding power in materials.
- Compliance with major environmental regulations including RoHS 3 and REACH, ensuring safe and sustainable use.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, these 316 Stainless Steel rounded head screws provide a robust solution where corrosion and mechanical stress are primary concerns. The passivated finish enhances the natural corrosion resistance of the 316 alloy, making these flange screws ideal for marine, chemical processing, and food-grade equipment applications. The Class 3A UNC coarse thread ensures quick assembly and superior resistance to loosening under vibration, a common challenge in machinery and structural assemblies. Combined with a 70,000 psi tensile strength and a flanged, rounded button head, this screw distributes clamp load effectively, preventing surface damage and maintaining a low-profile, secure fit in dynamic operational environments.
Specification Summary & Compliance
This screw adheres to UNC coarse thread standards with a Class 3A thread fit for precise, high-quality threading. Key dimensional specifications include a thread size of 8-32, a length of 1/2", and a flange diameter of 0.359". Manufacturing and material properties are defined by a Rockwell B70 hardness and 70,000 psi tensile strength. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in regulated industries without hazardous substances.
