S-98164A451 8-32 x 1 1/4" 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 with 316 Stainless Steel construction and passivated finish, ideal for harsh industrial environments
- Exceptional mechanical strength delivering 70,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing performance
- Precision thread engagement with Class 3A fit and UNC coarse threads ensuring secure fastening and vibration resistance
- Efficient installation via 3/32" hex drive and rounded button head design for easy access in confined spaces
- Full threading coverage across the 1 1/4" length provides maximum grip and adjustment flexibility
- Regulatory compliance with ASME B18.3 standards and environmental directives (RoHS 3, REACH) for global industrial use
- Durable surface protection through passivation enhancing longevity in corrosive or high-moisture applications
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these 8-32 UNC fully threaded screws address critical challenges in machinery, marine, and chemical processing equipment. The 316 Stainless Steel material combined with a passivated finish provides exceptional resistance to chlorides and acidic environments, reducing maintenance costs and downtime. The Class 3A thread fit and coarse threading ensure rapid assembly and reliable performance under vibration, while the rounded head design with hex drive facilitates quick installation in tight spaces. Ideal for securing components in corrosion-prone settings, these screws deliver long-term reliability where standard fasteners fail.
Specification Summary & Compliance
This rounded head screw maintains precision Class 3A thread fit per UNC standards with 8-32 coarse threading and 1 1/4" length. Manufacturing complies with ASME B18.3 specifications, ensuring dimensional accuracy and interchangeability. The product is verified RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for industrial components.
