S-98164A468 5/16"-18 x 1 3/4" 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 in harsh environments thanks to 316 stainless steel construction and passivated surface treatment
- Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for demanding industrial applications
- Precise, reliable fastening ensured by Class 3A thread fit and UNC coarse thread spacing for vibration resistance
- Easy installation and removal with 3/16" hex drive design providing secure tool engagement
- Full-length threading offers maximum grip and load distribution across the entire 1 3/4" length
- Comprehensive compliance with ASME B18.3 standards and environmental regulations including RoHS 3 and REACH
- Durable rounded head design provides a finished appearance while resisting snagging in operational environments
Professional Applications & Engineering Value
Engineered for demanding industrial environments, these 316 stainless steel rounded head screws deliver exceptional performance where corrosion resistance is critical. The combination of passivated finish and UNC coarse threading creates an optimal solution for chemical processing, marine applications, and food processing equipment where exposure to moisture and aggressive substances is common. The Class 3A thread fit ensures precise engagement with mating components, reducing the risk of vibration-induced loosening in machinery and structural assemblies. With 70,000 psi tensile strength and fully threaded design, these hex drive screws provide reliable clamping force in high-stress applications while the rounded head profile minimizes protrusion concerns in confined spaces.
Specification Summary & Compliance
This 5/16"-18 UNC screw features Class 3A thread fit precision manufacturing with coarse thread spacing. Manufactured to ASME B18.3 specifications with complete compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The 1 3/4" length provides full threading coverage, while the 3/16" hex drive ensures secure tool engagement during installation and maintenance operations.
