S-98164A133 8-32 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 with 316 stainless steel construction and passivated finish, ideal for harsh industrial environments
- High tensile strength of 70,000 psi ensures reliable performance under demanding mechanical loads
- Precise Class 3A thread fit provides secure, vibration-resistant fastening in critical applications
- Fully threaded design offers maximum grip length and uniform load distribution
- Hex drive (3/32") compatibility enables easy installation with standard tools while preventing cam-out
- Rounded button head profile delivers a smooth, low-profile finish that reduces snagging risks
- Comprehensive regulatory compliance including ASME B18.3, RoHS 3 and REACH for global market acceptance
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these 8-32 UNC 316 stainless steel rounded head screws combine exceptional material properties with precision manufacturing. The passivated finish significantly enhances the natural corrosion resistance of 316 stainless steel, making these button head screws ideal for chemical processing, marine environments, and food equipment where moisture and corrosive agents are present. The Class 3A thread fit ensures tight tolerances for vibration-resistant assemblies in machinery, electronic enclosures, and precision instruments. With their fully threaded design and 70,000 psi tensile strength, these hex drive screws maintain clamping force integrity in high-stress applications while the rounded head profile prevents damage to adjacent components.
Specification Summary & Compliance
This 8-32 UNC screw features precision Class 3A thread fit with coarse thread spacing, manufactured to exacting dimensional standards. The product complies with ASME B18.3 specifications (ASTM F879) and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulatory requirements for environmental compliance and substance restrictions. With a 1/4" length and Rockwell B55 hardness, these industrial fasteners deliver consistent performance across demanding applications.
