S-92949A553 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 18-8 Stainless Steel and passivated finish, ideal for harsh environments and long-term reliability.
- High tensile strength of 70,000 psi ensures dependable load-bearing capacity and resistance to mechanical failure in demanding applications.
- Precise Class 3A thread fit provides secure, vibration-resistant fastening with minimal risk of loosening.
- Hex drive design (5/32") allows for high-torque installation and easy removal, reducing assembly time and tool slippage.
- Fully threaded shank offers consistent holding power along the entire length, enhancing grip in various material thicknesses.
- Compliance with ASME B18.3, RoHS 3, and REACH guarantees adherence to industry standards and environmental safety regulations.
- Rounded button head profile minimizes protrusion for a clean, low-profile finish while maintaining structural integrity.
Professional Applications & Engineering Value
This 1/4"-20 UNC Rounded Head Screw is engineered to address critical challenges in industrial settings, such as vibration-induced loosening and corrosion in humid or chemical-exposed environments. The 18-8 Stainless Steel material, combined with a passivated finish, provides exceptional resistance to rust and oxidation, extending service life in machinery, marine equipment, and outdoor structures. The coarse UNC threading and Class 3A fit ensure quick, secure installation in metals and plastics, reducing assembly errors. Its hex drive design supports high-torque applications, making it ideal for heavy-duty industrial screws in automotive, construction, and manufacturing sectors where precision and durability are paramount.
Specification Summary & Compliance
This screw features a 1/4"-20 UNC coarse thread with Class 3A precision fit, ensuring tight tolerances and reliable performance. It is manufactured in accordance with ASME B18.3 specifications and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, affirming its safety and environmental standards. Dimensions include a length of 2 3/4", head diameter of 0.437", and drive size of 5/32", with full threading for consistent application.
