S-97654A304 5/16"-18 x 5/8" 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 industrial environments
- Exceptional load-bearing capability with 70,000 psi tensile strength and Rockwell B70 hardness for reliable performance under stress
- Precise, secure fastening achieved through Class 3A thread fit and UNC coarse threading, minimizing loosening in high-vibration applications
- Efficient installation and high torque transmission enabled by the 3/16" hex drive and flanged design, reducing assembly time
- Wide seating surface from the flanged, rounded button head distributes clamping force evenly, protecting assembled materials
- Full threading along the 5/8" length ensures maximum grip and adjustability in various material thicknesses
- Compliance with environmental regulations including RoHS 3 and REACH, ensuring safe use in regulated industries
Professional Applications & Engineering Value
This flanged rounded head screw is engineered to address common industrial fastening challenges, such as vibration-induced loosening and corrosion in demanding environments. The 18-8 stainless steel material, combined with a passivated finish, provides excellent resistance to rust and chemical exposure, making it suitable for outdoor equipment, food processing machinery, and marine applications. The UNC coarse thread and Class 3A fit ensure tight, precise engagement in metals and plastics, reducing the risk of thread stripping. The integrated flange and hex drive allow for quick, high-torque installation without the need for separate washers, streamlining assembly in automotive, aerospace, and heavy machinery sectors where reliability and efficiency are critical.
Specification Summary & Compliance
This screw adheres to UNC thread standards with a Class 3A fit for high precision and strength. Dimensions include a 5/16"-18 thread size, 5/8" length, and 0.688" flange diameter. It is fully threaded and features a coarse thread spacing. The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets environmental and safety standards for industrial use.
