S-90275A724 1/2"-13 x 3" ASME B18.6.3 Steel Slotted Flat Head Screws
Steel 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 zinc-plated steel construction for extended service life in demanding environments
- High tensile strength of 60,000 psi ensures reliable performance under heavy loads and vibration
- Class 2A thread fit provides consistent, precise engagement while maintaining easy assembly
- 82° countersink angle allows for flush mounting and clean aesthetic finish in applications
- Rockwell B70 hardness delivers excellent durability and resistance to wear during installation
- Coarse UNC threading enables quick assembly and disassembly in various materials
- Partial threading design offers optimal grip strength while reducing material stress
Professional Applications & Engineering Value
These zinc-plated steel flat head screws with 1/2"-13 UNC coarse threading are engineered to address critical industrial fastening challenges. The combination of 60,000 psi tensile strength and Rockwell B70 hardness ensures reliable performance in structural applications, machinery assembly, and heavy equipment where vibration resistance is paramount. The 82° countersink angle provides seamless flush mounting in metal fabrication, woodworking, and construction projects, eliminating protrusions that could interfere with operational safety. The zinc plating offers essential corrosion protection for outdoor equipment, industrial machinery, and marine applications, significantly extending service life while maintaining consistent Class 2A thread fit for precision assembly operations.
Specification Summary & Compliance
Manufactured to exacting ASME B18.6.3 standards with Class 2A thread fit tolerance for consistent performance. Features 1/2"-13 UNC coarse threads with right-hand direction and standard flat head profile. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets. The 3" length with partial threading provides optimal fastening capability for medium to heavy-duty applications.
