S-90316A219 1/4"-20 x 7/8" ASME B18.6.3 Stainless Steel Flanged Hex Head Screws with Slotted Drive
Stainless Steel Flanged Hex Head Screws with Slotted Drive
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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 18-8 stainless steel construction, ideal for harsh environments and long-term reliability
- Exceptional holding power from 100,000 psi tensile strength and Rockwell B100 hardness for demanding applications
- Integrated flange design eliminates the need for a separate washer, providing a larger bearing surface and faster assembly
- Reliable coarse threading (UNC) ensures quick installation and reduced cross-threading risk in various materials
- Precise Class 2A thread fit guarantees consistent engagement and secure fastening with standard nuts
- Versatile external hex/slotted drive offers compatibility with common hand and power tools for flexible installation
- Full threading along the 7/8" length provides maximum grip and adjustability in assembled components
Professional Applications & Engineering Value
This flanged hex head screw is engineered to address common industrial challenges like vibration loosening, corrosion-induced failure, and assembly inefficiency. The 18-8 stainless steel material offers excellent resistance to rust and chemicals, making it suitable for outdoor equipment, food processing machinery, and marine applications. The integrated flange distributes clamp load effectively, preventing surface damage and maintaining joint integrity under stress. Combined with the UNC coarse thread and fully threaded design, it ensures rapid installation and robust performance in structural assemblies, automotive components, and heavy-duty machinery where high tensile strength and durability are critical.
Specification Summary & Compliance
This screw features a 1/4"-20 UNC coarse thread with Class 2A fit for consistent dimensional accuracy. It is manufactured in compliance with ASME B18.6.3 standards and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safety and sustainability in industrial use.
