S-90909A629 1/4"-20 x 5/16" 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
- Enhanced load distribution through the integrated flange design, preventing surface damage and improving joint integrity
- High tensile strength of 70,000 psi ensures reliable performance under significant mechanical stress
- Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies
- Coarse UNC threading enables faster installation and reduced cross-threading risks in industrial applications
- Convenient 5/32" hex drive allows for easy installation with standard tools, speeding up assembly processes
- Wide button head profile offers a low-profile, aesthetically clean finish while maintaining structural stability
Professional Applications & Engineering Value
These 316 stainless steel flanged rounded head screws deliver exceptional engineering value in demanding sectors like chemical processing, marine equipment, and food manufacturing where corrosion resistance is critical. The UNC coarse threading combined with Class 3A thread fit ensures rapid, reliable fastening even in high-vibration environments, reducing assembly time and maintenance costs. The integrated flange eliminates the need for separate washers, distributing clamp load evenly to prevent material deformation. With full threading and a wide button head design, these screws provide consistent clamping force and a streamlined appearance, making them ideal for machinery, enclosures, and structural assemblies requiring both durability and compliance with industrial standards.
Specification Summary & Compliance
This screw features precision 1/4"-20 UNC coarse threading with Class 3A fit for tight tolerance assemblies. It is manufactured in compliance with ASME B18.3 specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safety and sustainability in industrial applications.
