S-97654A357 5/16"-18 x 1 1/2" Stainless Steel Flanged Button Head Hex-Drive Screws
Stainless Steel Flanged 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 and passivated finish, ideal for harsh environments
- Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for heavy-duty applications
- Precise thread engagement through Class 3A thread fit and UNC coarse threading for reliable fastening
- Enhanced stability and load distribution from the integrated flange design, eliminating the need for separate washers
- Secure installation and removal with hex drive (3/16") providing positive torque transmission
- Optimized partial threading for controlled clamping force and reduced thread galling
- Full regulatory compliance with RoHS 3 and REACH standards for global industrial use
Professional Applications & Engineering Value
This 5/16"-18 UNC rounded head flange screw delivers critical performance advantages in demanding industrial settings. The 18-8 stainless steel material combined with passivated finish provides exceptional resistance to corrosion, oxidation, and chemical exposure, making it ideal for outdoor equipment, marine components, and food processing machinery. The flange design distributes clamping force over a wider surface area, preventing surface damage and maintaining joint integrity under vibration. With Class 3A thread fit and coarse threading, installation is faster and more reliable in materials where fine threads might strip. The hex drive ensures high torque capability without cam-out, while the partial threading allows for precise tension control in assemblies requiring specific clamp load characteristics.
Specification Summary & Compliance
This screw maintains Class 3A thread fit per UNC standards with 5/16"-18 coarse threading and partial threading configuration. Manufacturing specifications include 70,000 psi tensile strength and Rockwell B70 hardness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for international industrial markets and restricted substance-free applications.
