S-92949A201 8-32 x 1 1/4" 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 construction and passivated finish, ideal for harsh industrial environments.
- High tensile strength of 70,000 psi ensures reliable fastening under heavy loads and vibration.
- Precise Class 3A thread fit provides excellent engagement and reduces the risk of cross-threading during installation.
- Hex drive design (3/32") allows for secure tool engagement and high torque application without slipping.
- Fully threaded shank offers consistent holding power along the entire length for uniform clamping force.
- Rounded (button) head style presents a low-profile, finished appearance while minimizing snagging risks.
- Compliance with ASME B18.3, RoHS, and REACH guarantees quality, safety, and environmental standards for global supply chains.
Professional Applications & Engineering Value
This 8-32 UNC threaded rounded head screw is engineered from 18-8 stainless steel to address common industrial challenges such as corrosion, mechanical stress, and assembly efficiency. The coarse thread and Class 3A fit ensure quick, secure fastening in metals and plastics, reducing installation time and improving reliability in automated production lines. The passivated finish enhances surface durability, preventing rust in humid or chemical-exposed settings like machinery, electronics enclosures, and outdoor equipment. With a hex drive for high-torque applications, it provides a dependable solution for maintenance, manufacturing, and OEM assemblies where vibration resistance and long-term performance are critical.
Specification Summary & Compliance
This screw adheres to ASME B18.3 specifications, with precise UNC coarse threads in Class 3A tolerance for optimal fit. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances. Dimensions include a 1-1/4" length, 8-32 thread size, and 0.312" head diameter, manufactured to consistent standards for reliability in industrial fastening applications.
