S-98164A443 6-32 x 5/8" 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 in harsh environments due to 316 stainless steel construction with passivated finish
- Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing performance
- Precise thread engagement ensured by Class 3A fit and UNC coarse threading for vibration resistance and easier assembly
- Secure hex drive installation with 5/64" drive size providing positive torque transmission and reduced cam-out risk
- Full threading coverage along the 5/8" length for maximum grip and uniform stress distribution
- Low-profile rounded button head design offers sleek appearance while minimizing protrusion in confined spaces
- Regulatory compliance assurance meeting ASME B18.3 standards and environmental directives (RoHS 3 & REACH)
Professional Applications & Engineering Value
These 316 stainless steel rounded head screws deliver critical performance advantages in demanding industrial settings where corrosion resistance and mechanical reliability are paramount. The combination of Class 3A thread fit and UNC coarse threading provides superior vibration resistance in machinery assemblies, while the passivated finish significantly enhances pitting resistance in chemical processing, marine, and food processing equipment. The hex drive configuration ensures secure installation in high-torque applications, and the fully threaded design maximizes clamping force distribution across the entire 5/8" engagement length. These button head screws are engineered to maintain integrity in temperature-fluctuating environments where thermal cycling would compromise inferior fasteners.
Specification Summary & Compliance
This 6-32 UNC thread screw features precise Class 3A thread fit tolerances with coarse thread spacing, manufactured to ASME B18.3 specifications. The fastener maintains dimensional accuracy with 0.262" head diameter and 0.073" head height. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial applications with strict material restrictions.
