S-98164A465 1/4"-20 x 2 3/4" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws
Stainless Steel Button Head Hex-Drive 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 316 stainless steel construction and passivated finish, ideal for harsh environments and chemical exposure
- Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under high stress
- Precise thread engagement through Class 3A fit and UNC coarse threading, ensuring secure fastening and vibration resistance
- Easy installation and removal with 5/32" hex drive and rounded button head design, reducing assembly time and tool wear
- Full thread coverage along the 2 3/4" length for maximum grip and load distribution across connected components
- Regulatory compliance assurance meeting ASME B18.3 specifications, RoHS 3, and REACH standards for global industrial use
- Durable surface protection from passivation treatment, enhancing longevity and maintaining appearance in demanding applications
Professional Applications & Engineering Value
Engineered for demanding industrial environments, these 316 stainless steel rounded head screws deliver critical corrosion resistance where exposure to moisture, chemicals, or salt spray would compromise ordinary fasteners. The UNC coarse thread design with Class 3A fit provides superior vibration resistance in machinery, automotive, and marine applications, while the fully threaded configuration ensures maximum clamping force across the entire 2 3/4" length. The passivated finish creates an additional protective oxide layer, significantly extending service life in chemical processing equipment, offshore installations, and food processing machinery where corrosion-resistant screws are essential for operational safety and reduced maintenance cycles.
Specification Summary & Compliance
This 1/4"-20 threaded screw maintains precision Class 3A thread fit per UNC standards with coarse thread spacing and right-hand threading. Manufacturing complies with ASME B18.3 specifications for dimensional accuracy and mechanical properties. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring restricted substance adherence for global industrial distribution and use.
