S-92949A428 8-40 x 3/8" 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
- Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh or humid environments
- Superior thread engagement and vibration resistance thanks to the 8-40 extra fine thread and Class 3A fit for precise assemblies
- High-strength performance with a tensile strength of 70,000 psi, ensuring reliable fastening under stress
- Durable and wear-resistant material with a Rockwell B55 hardness for long service life
- Secure and flush installation with a rounded button head profile and standard 3/32" hex drive
- Full threading for maximum grip along the entire 3/8" length, providing consistent holding power
- Compliance with major environmental regulations including RoHS 3 and REACH, ensuring safe and responsible sourcing
Professional Applications & Engineering Value
This 8-40 extra fine thread screw is engineered to solve critical challenges in precision assemblies where space is limited and vibration is a concern. The 18-8 stainless steel provides excellent corrosion resistance, making it suitable for electronics, medical devices, and marine equipment. The Class 3A thread fit and extra fine threading ensure tight tolerances and superior resistance to loosening under dynamic loads. The rounded button head offers a low-profile, aesthetically pleasing finish while the hex drive allows for secure installation with standard tools. This combination of high tensile strength and precision threading delivers reliable performance in demanding industrial fastening applications.
Specification Summary & Compliance
This screw features a Class 3A thread fit with 8-40 UNS extra fine threads, ensuring high precision and consistent performance. It is manufactured from 18-8 Stainless Steel with a tensile strength of 70,000 psi and Rockwell B55 hardness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards.
