S-91785A541 1/4"-20 x 7/8" 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
- Superior corrosion resistance with 18-8 Stainless Steel and passivated finish, ideal for harsh industrial environments.
- Exceptional load-bearing capacity from 100,000 psi tensile strength and Rockwell B100 hardness for reliable, long-term performance.
- Wide truss head design provides a larger bearing surface, distributing clamping force effectively and reducing surface damage.
- Easy installation and removal with standard slotted drive, compatible with common tools for efficient assembly.
- Precise thread engagement thanks to UNC coarse threads and Class 2A fit, ensuring secure fastening in various materials.
- Full threading along the 7/8" length offers maximum grip and adjustability in deep or variable-thickness applications.
- Compliance with major standards including ASME B18.6.3, RoHS, and REACH, guaranteeing quality and environmental safety.
Professional Applications & Engineering Value
This 1/4"-20 UNC truss head slotted screw is engineered to address common industrial challenges such as vibration loosening and material fatigue. The 18-8 stainless steel construction, enhanced by a passivated finish, provides excellent resistance to rust and chemical exposure, making it suitable for outdoor equipment, food processing machinery, and marine applications. The wide truss head design minimizes the risk of pull-through in softer materials while the coarse UNC threads ensure quick, secure fastening in wood, plastic, and metal assemblies. With full threading and high tensile strength, it delivers consistent clamping force, reducing maintenance needs and enhancing the durability of heavy-duty industrial projects.
Specification Summary & Compliance
This screw features a 1/4"-20 UNC coarse thread with 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 meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, confirming it is free of hazardous substances and safe for various industrial uses.
