S-92949A821 8-32 x 2 1/2" ASME B18.3, ASTM F879 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 extended service life.
- High tensile strength of 70,000 psi ensures reliable load-bearing capacity and resistance to mechanical failure in demanding applications.
- Precise Class 3A thread fit provides excellent engagement and vibration resistance, reducing the risk of loosening over time.
- Easy installation and removal with a 3/32" hex drive, allowing for efficient assembly and maintenance with standard tools.
- Fully threaded design offers consistent holding power along the entire 2-1/2" length for secure fastening in various material thicknesses.
- Compliance with ASME B18.3, RoHS 3, and REACH ensures adherence to industry standards and environmental regulations for safe, global use.
- Durable Rockwell B55 hardness maintains structural integrity under stress, minimizing wear and deformation during repeated use.
Professional Applications & Engineering Value
This 8-32 UNC thread screw with a rounded head and coarse thread spacing is engineered to address common industrial challenges such as vibration-induced loosening and corrosion in machinery, electronics, and structural assemblies. The 18-8 Stainless Steel material, combined with a passivated finish, provides exceptional resistance to rust and chemical exposure, making it suitable for outdoor, marine, and high-humidity environments. Its hex drive design ensures quick, tool-compatible installation, while the fully threaded body delivers uniform clamping force, preventing joint failure in dynamic loads. Ideal for industrial screws applications requiring reliable, long-term performance without frequent maintenance.
Specification Summary & Compliance
The screw features precise Class 3A thread fit per UNC standards, ensuring tight tolerances for secure fastening. It meets ASME B18.3 manufacturing specifications, with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) for environmental safety. Dimensions include a 2-1/2" length, 0.312" head diameter, and coarse thread spacing, all manufactured to uphold durability and performance in professional settings.
