S-98164A176 10-32 x 1/4" 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 from 316 Stainless Steel and passivated finish, ideal for harsh or marine environments.
- Exceptional thread engagement and reliability with a Class 3A UNF fine thread fit, minimizing the risk of loosening under vibration.
- High-strength performance with a tensile strength of 70,000 psi and Rockwell B55 hardness for demanding applications.
- Secure and efficient installation provided by the 1/8" hex drive, preventing cam-out and enabling high torque application.
- Full threading for maximum grip along the entire 1/4" length, ensuring a strong hold in a wide range of material thicknesses.
- Rounded button head design offers a finished appearance and reduces the risk of snagging.
- Compliance with major industry and environmental standards including ASME B18.3, RoHS 3, and REACH for guaranteed quality and safety.
Professional Applications & Engineering Value
This 10-32 UNF rounded head screw is engineered to solve critical challenges in industrial assembly. The combination of 316 Stainless Steel and a passivated finish provides outstanding resistance to chemicals, saltwater, and other corrosive agents, making it a top choice for marine equipment, chemical processing plants, and outdoor machinery. The Class 3A fine thread ensures a precise, tight fit that is less prone to vibrational loosening compared to coarse threads, which is vital for maintaining integrity in dynamic systems. The hex drive allows for high torque application without slippage, speeding up assembly in tight spaces. These features make it an indispensable component for applications demanding reliability, durability, and compliance with stringent industry specifications.
Specification Summary & Compliance
This screw features a 10-32 UNF thread with a Class 3A fit for high precision. It is manufactured to meet ASME B18.3 specifications where applicable (ASTM F879). The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances. Key dimensional attributes include a thread diameter of 0.19", a head diameter of 0.361", and a total length of 1/4".
