S-91770A592 1/4"-20 x 6" ASME B18.6.3 Stainless Steel Truss Head Phillips Screws
Stainless Steel Truss Head Phillips 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 passivated 18-8 stainless steel construction, ideal for harsh industrial environments
- Exceptional load-bearing capacity with 70,000 psi tensile strength and Rockwell B70 hardness for reliable performance
- Enhanced stability and reduced surface pressure from the wide rounded truss head design
- Quick installation and secure fastening with Phillips No. 3 drive and UNC coarse threading
- Precise thread engagement ensured by Class 2A thread fit for consistent assembly quality
- Full-length threading provides maximum grip and holding power across the entire 6" length
- Compliance with industry standards including ASME B18.6.3, RoHS 3, and REACH for safe, regulated use
Professional Applications & Engineering Value
This 1/4-20 x 6" passivated stainless steel rounded truss head screw delivers critical engineering solutions where vibration resistance, corrosion protection, and structural integrity are paramount. The 18-8 stainless steel with passivated finish combats oxidation in demanding environments like marine, chemical processing, and outdoor construction. Its rounded truss head distributes clamping force over a wider area, minimizing material stress and preventing surface damage. The UNC coarse threading and Phillips No. 3 drive enable rapid assembly in heavy machinery, structural frameworks, and industrial equipment, reducing installation time while maintaining 70,000 psi tensile strength for long-term reliability.
Specification Summary & Compliance
Manufactured to exacting standards, this screw features Class 2A thread fit for consistent dimensional accuracy and UNC 1/4-20 coarse threading per ASME B18.6.3 specifications. It is fully threaded along its 6" length with a right-hand thread direction. Compliance is verified with ASME B18.6.3 for mechanical and dimensional requirements, RoHS 3 (2015/863/EU) for restricted substance limits, and REACH (EC 1907/2006) for chemical safety, ensuring suitability for regulated industrial and commercial applications.
