S-97715A533 1/4"-28 x 3/8" Brass Button Head Hex-Drive Screws
Brass 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 brass construction, ideal for harsh environments and electrical applications
- Precise, reliable fastening ensured by Class 3A thread fit for minimal backlash and vibration resistance
- High mechanical strength with 50,000 psi tensile strength and Rockwell B55 hardness for demanding loads
- Easy installation and removal with 5/32" hex drive, providing secure tool engagement and reducing strip-out risk
- Optimal thread engagement from fine 1/4"-28 UNF threading and full-length threads for maximum grip
- Low-profile, rounded button head design offers a finished appearance and reduces snagging hazards
- Compliance with global safety standards including RoHS 3 and REACH for responsible industrial use
Professional Applications & Engineering Value
This brass rounded head screw with 1/4"-28 UNF fine threading and Class 3A precision fit is engineered to solve critical fastening challenges in industries like electronics, marine, and instrumentation. The brass material provides excellent conductivity and resistance to galvanic corrosion, making it ideal for electrical enclosures and assemblies exposed to moisture. The fully threaded design and fine thread spacing ensure maximum holding power in thin materials and prevent loosening under vibration. With a hex drive for high-torque application, these screws deliver reliable performance in precision machinery, optical devices, and automotive systems where thread integrity and durability are paramount.
Specification Summary & Compliance
This screw meets UNF thread standards with a Class 3A thread fit for high-precision applications, ensuring tight tolerances and consistent performance. Manufacturing adheres to strict dimensional specifications, including a 0.25" thread diameter and 3/8" length. The product is fully compliant with RoHS 3 (2015/863/EU) under exemption 6(c) for lead in copper alloys and REACH (EC 1907/2006) regulations, confirming its suitability for global industrial and commercial use without hazardous substances.
