S-97595A585 1/4"-20 x 7/8" ASME B18.3 Brass Hex Drive Flat Head Screws
Brass Hex Drive Flat Head 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 for long-lasting performance in demanding environments
- Exceptional thread engagement with Class 3A fit ensuring secure, vibration-resistant connections
- High mechanical strength with 50,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing capability
- Optimal flush mounting with 82° countersink angle and standard flat head profile for seamless surface integration
- Efficient installation with 5/32" hex drive providing positive torque transmission and reduced cam-out risk
- Broad compatibility with UNC coarse threading (1/4"-20) suitable for various industrial applications
- Regulatory compliance meeting ASME B18.3 standards and environmental regulations for global supply chain integration
Professional Applications & Engineering Value
These flat head brass screws deliver critical performance advantages for precision assembly applications where corrosion resistance and mechanical integrity are paramount. The combination of fully threaded UNC coarse spacing and Class 3A thread fit ensures maximum engagement in softer materials while maintaining precise alignment. The 82° countersink angle provides optimal flush mounting in machinery, electrical enclosures, and marine equipment, preventing snagging while maintaining aesthetic appeal. The brass material naturally resists galvanic corrosion and is ideal for environments with moisture, chemicals, or electrical conductivity requirements. With right-hand threading and hex drive compatibility, these screws enable rapid installation in high-volume manufacturing while meeting stringent industrial fastener specifications.
Specification Summary & Compliance
Manufactured to exacting ASME B18.3 specifications with Class 3A thread fit precision for superior dimensional accuracy. The UNC coarse thread spacing (1/4"-20) ensures reliable performance in various materials. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making these screws suitable for global industrial applications requiring strict regulatory adherence.
