S-97654A261 1/4"-20 x 3/8" 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
- High-strength performance with 70,000 psi tensile strength and Rockwell B70 hardness for reliable, long-lasting fastening
- Precise Class 3A UNC thread fit ensures secure engagement and reduces the risk of cross-threading in assembly
- Convenient hex drive design (5/32") allows for easy installation and removal with standard tools, improving workflow efficiency
- Integrated flange and wide rounded button head distributes clamping force evenly, eliminating the need for separate washers
- Fully threaded coarse UNC threading provides faster installation and strong holding power in a variety of materials
- Compliance with RoHS 3 and REACH regulations ensures environmental safety and meets global industry standards
Professional Applications & Engineering Value
This 18-8 stainless steel flanged rounded head screw is engineered to address critical challenges in industrial assembly, such as vibration resistance and exposure to corrosive elements. The combination of a passivated finish and Class 3A UNC coarse thread ensures reliable performance in machinery, automotive, and electronic enclosures where consistent clamp load and durability are paramount. The integrated flange acts as a built-in washer, reducing part count and assembly time while the hex drive offers superior torque transmission compared to other drive types. Its fully threaded design and right-hand thread direction make it an optimal choice for high-volume production lines requiring fast, secure fastening without compromising on tensile strength or regulatory compliance.
Specification Summary & Compliance
This screw adheres to UNC coarse thread standards with a precise Class 3A thread fit for tight tolerances. Key dimensions include a 1/4"-20 thread size, 3/8" length, and 0.563" flange diameter. Manufactured from 18-8 stainless steel with a passivated finish, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free of hazardous substances and suitable for use in regulated industries.
