S-95599A115 4-40 x 3/4" Stainless Steel Oversized-Flange Button Head Hex-Drive Screws
Stainless Steel Oversized-Flange 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, ideal for harsh industrial environments and extended service life.
- High tensile strength of 80,000 psi ensures reliable, vibration-resistant fastening for demanding applications.
- Integrated flange design eliminates the need for a separate washer, providing a larger bearing surface and simplifying assembly.
- Hex drive (1/16") allows for high-torque installation and secure gripping, reducing the risk of tool slippage.
- Class 2A thread fit with UNC coarse threads offers easier assembly and better performance in materials where fine threads might strip.
- Fully threaded shank provides consistent holding power along the entire length of the screw.
- Compliance with RoHS 3 and REACH regulations ensures environmental safety and meets global supply chain requirements.
Professional Applications & Engineering Value
This 4-40 UNC flanged rounded head screw is engineered to solve common industrial fastening challenges. The 18-8 stainless steel material provides excellent resistance to oxidation and corrosion, making it suitable for applications in electronics, machinery, and outdoor equipment where moisture or chemicals are present. The flanged button head design distributes clamping force effectively, preventing surface damage and maintaining joint integrity under vibration. Combined with a coarse UNC thread and Class 2A fit, it ensures quick, reliable installation in a variety of substrates, reducing assembly time and improving production efficiency. The hex drive facilitates secure tightening in confined spaces, offering a robust solution for maintenance and manufacturing professionals.
Specification Summary & Compliance
This screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy. It is manufactured from 18-8 stainless steel with a hardness of Rockwell B85 and a tensile strength of 80,000 psi. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets strict environmental and safety standards for industrial use.
