S-97715A530 1/4"-28 x 3/16" 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 from high-quality brass material, ideal for harsh industrial environments
- Exceptional thread precision with Class 3A fit ensuring reliable, vibration-resistant connections
- High tensile strength of 50,000 psi provides dependable load-bearing capacity for demanding applications
- Rockwell B55 hardness offers excellent durability and resistance to wear during installation
- Secure 5/32" hex drive enables easy installation with standard tools while preventing cam-out
- Full threading allows maximum engagement depth and uniform stress distribution
- Regulatory compliance with RoHS 3 and REACH standards ensures environmental safety
Professional Applications & Engineering Value
These brass rounded head screws with 1/4-28 UNF fine threading deliver critical performance advantages in precision assembly applications. The combination of Class 3A thread fit and fully threaded design eliminates loosening under vibration while maintaining consistent clamping force. Brass construction provides natural corrosion resistance without additional plating, making these button head fasteners ideal for electrical components, marine equipment, and plumbing systems where galvanic compatibility is essential. The 5/32" hex drive ensures positive torque transmission during installation, reducing the risk of head stripping in soft material applications while the rounded head profile offers a finished appearance with reduced snagging hazards.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 3A thread tolerance per UNF specifications, ensuring consistent fit and performance. These brass screws feature right-hand fine threading with 28 threads per inch and maintain 50,000 psi tensile strength with Rockwell B55 hardness. Fully compliant with RoHS 3 (2015/863/EU) under exemption 6(c) for lead in copper alloys and REACH (EC 1907/2006) regulations, meeting current environmental standards for industrial use.
