S-90909A626 1/4"-20 x 1/4" ASME B18.3 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
- Superior corrosion resistance with 316 Stainless Steel construction, ideal for harsh chemical and marine environments
- High-strength performance offering 70,000 psi tensile strength for reliable load-bearing in demanding applications
- Precise thread engagement with Class 3A fit ensuring secure fastening and vibration resistance
- Integrated flange design eliminates the need for separate washers, simplifying installation and distributing load evenly
- Easy installation and removal with 5/32" hex drive, providing superior torque transmission in confined spaces
- Full threading coverage along the 1/4" length for maximum grip strength and adjustment flexibility
- Wide rounded button head profile offers a low-profile, finished appearance while reducing surface damage risks
Professional Applications & Engineering Value
Engineered for industrial environments where corrosion resistance and mechanical reliability are paramount, these 316 Stainless Steel flanged hex drive screws solve critical fastening challenges. The UNC coarse thread with Class 3A precision ensures rapid assembly and superior vibration resistance in machinery, electrical enclosures, and structural frameworks. The integrated flange design provides built-in washer functionality, eliminating component count while preventing surface marring. With 70,000 psi tensile strength and fully threaded construction, these rounded head screws maintain integrity under dynamic loads and thermal cycling, making them ideal for chemical processing, marine hardware, and food equipment applications where durability and regulatory compliance are essential.
Specification Summary & Compliance
This 1/4"-20 UNC screw features Class 3A thread fit for precision tolerance and meets ASME B18.3 manufacturing specifications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in regulated industries. Dimensions include 1/4" length, 0.56" flange diameter, and 5/32" hex drive size with right-hand coarse threading.
