S-91785A096 4-40 x 1/2" 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 with 18-8 stainless steel and passivated finish, ideal for harsh environments and long-term reliability.
- Superior load distribution from the wide truss head design, reducing surface pressure and preventing material damage.
- High tensile strength of 100,000 psi ensures secure, durable fastening under demanding mechanical stress.
- Easy manual installation and removal with the slotted drive, providing straightforward tool compatibility.
- Reliable thread engagement due to fully threaded coarse UNC design, offering excellent pull-out resistance.
- Precision fit and interchangeability with Class 2A thread fit, ensuring consistent performance in assembly lines.
- Compliance with major industry standards including ASME B18.6.3, RoHS 3, and REACH, guaranteeing safety and regulatory adherence.
Professional Applications & Engineering Value
These 4-40 UNC rounded truss head slotted screws are engineered to address common industrial challenges such as vibration loosening and corrosion-induced failure. The 18-8 stainless steel material, combined with a passivated finish, provides excellent resistance to rust and chemicals, making them suitable for applications in electronics, machinery, and outdoor equipment. The wide truss head offers a larger bearing surface, which helps distribute clamping force evenly, reducing the risk of damage to softer materials. With a coarse thread and fully threaded design, these screws ensure quick installation and robust holding power in various substrates, enhancing assembly efficiency and longevity in industrial fastening systems.
Specification Summary & Compliance
This screw features precise Class 2A thread fit per UNC standards, ensuring dimensional accuracy and easy assembly. It meets ASME B18.6.3 specifications for mechanical and dimensional requirements, and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and safety standards for hazardous substances.
