S-91785A544 1/4"-20 x 1 1/4" ASME B18.6.3 Stainless Steel Truss Head Slotted Screws
Stainless Steel Truss Head Slotted 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
- Exceptional corrosion resistance thanks to 18-8 Stainless Steel construction and passivated finish, ideal for harsh industrial environments.
- Superior load distribution and reduced surface damage from the wide truss head design, providing a larger bearing surface.
- High mechanical strength and durability with a tensile strength of 100,000 psi and Rockwell B100 hardness for demanding applications.
- Reliable and easy assembly with a Class 2A thread fit and coarse UNC thread, ensuring consistent engagement and faster installation.
- Broad compatibility and secure fastening due to the slotted drive and fully threaded right-hand design for standard tool use.
- Compliance with major industry standards including ASME B18.6.3, guaranteeing dimensional accuracy and performance reliability.
- Environmentally safe for global supply chains by meeting RoHS 3 and REACH regulations, ensuring no hazardous substance restrictions.
Professional Applications & Engineering Value
This 1/4-20 UNC Rounded Truss Head Screw is engineered to solve critical fastening challenges in industrial settings. The combination of 18-8 Stainless Steel and a passivated finish provides outstanding resistance to rust and chemical exposure, making it perfect for applications in manufacturing, outdoor equipment, and marine environments where moisture is a concern. The wide truss head offers a larger contact area, which helps prevent pull-through in softer materials and distributes clamping force more effectively, reducing the risk of material damage. With its coarse thread and Class 2A fit, it ensures quick, secure installation and vibration resistance, minimizing maintenance needs and downtime in assembly lines and machinery.
Specification Summary & Compliance
This screw features a 1/4"-20 UNC thread with a Class 2A fit for standard tolerance and reliable engagement. It is manufactured in compliance with ASME B18.6.3 specifications, ensuring dimensional accuracy and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from restricted hazardous substances for safe use in various industries.
