S-92451A552 1/4"-20 x 2 1/2" ASME B18.6.3 Brass Slotted Flat Head Screws
Brass Slotted 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
- Excellent electrical conductivity making it ideal for electrical and electronic assemblies requiring grounding
- High tensile strength of 50,000 psi ensures reliable fastening under significant mechanical stress
- Precise Class 2A thread fit provides smooth installation and secure engagement with mating components
- 82° countersink angle with standard flat head profile enables flush mounting for clean, professional finishes
- Partially threaded design offers optimal grip length control for specific material thicknesses
- Slotted drive compatibility allows for quick installation with standard screwdrivers
Professional Applications & Engineering Value
This 1/4"-20 UNC brass flat head screw delivers exceptional engineering value through its Rockwell B50 hardness and specialized construction. The coarse thread spacing provides superior holding power in softer materials and faster installation times. The partially threaded shank concentrates engagement where needed most, preventing overtightening in delicate assemblies. Its brass material offers natural corrosion resistance without additional plating, making it perfect for marine, electrical, and plumbing applications where conductivity and non-magnetic properties are critical. The standard 82° countersink angle ensures seamless integration with matching countersunk holes, creating smooth surfaces ideal for machinery, furniture, and architectural applications where protrusions are unacceptable.
Specification Summary & Compliance
Manufactured to ASME B18.6.3 specifications with Class 2A thread fit tolerance for consistent performance. Features 1/4"-20 UNC coarse threads with right-hand direction and 2 1/2" overall length. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across industrial and consumer applications.
