S-91770A542 1/4"-20 x 1" 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 environments and long-term reliability.
- Enhanced load distribution from the wide truss head design, reducing surface pressure and preventing material damage.
- High tensile strength of 70,000 psi and Rockwell B70 hardness for dependable performance under heavy loads and stress.
- Efficient installation with Phillips No. 3 drive and coarse UNC threading, enabling quick assembly and reduced operator fatigue.
- Precise Class 2A thread fit ensures smooth engagement and consistent fastening in industrial applications.
- Full threading along the 1" length provides maximum grip and adjustability for varied material thicknesses.
- Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees quality, safety, and environmental standards for global use.
Professional Applications & Engineering Value
This 1/4"-20 x 1" passivated 18-8 stainless steel truss head screw is engineered to address common industrial challenges, such as vibration loosening and corrosion-induced failure. The wide truss head offers a larger bearing surface, distributing clamp load effectively to prevent damage to softer materials and maintain joint integrity. Made from 18-8 stainless steel with a passivated finish, it resists rust and chemical exposure, making it suitable for outdoor, marine, and chemical processing equipment. The coarse UNC threads and Phillips No. 3 drive facilitate rapid installation in high-volume assembly lines, while the fully threaded design ensures secure fastening in dynamic applications. Ideal for machinery, electronics, and structural assemblies, this screw delivers reliable performance where durability and compliance are critical.
Specification Summary & Compliance
This screw features a 1/4"-20 UNC coarse thread with Class 2A fit for standard tolerance and easy assembly. It meets ASME B18.6.3 specifications for dimensional accuracy and performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), it ensures adherence to environmental and safety regulations, supporting sustainable industrial practices.
