S-90275A139 5-40 x 2" 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, extending service life in demanding industrial environments
- High tensile strength of 60,000 psi ensures reliable fastening under heavy loads and vibration
- Rockwell B70 hardness provides excellent wear resistance and durability for repeated use
- Class 2A thread fit offers consistent assembly performance with standard mating components
- 82° countersink angle enables flush mounting for clean, professional finishes
- Fully threaded design maximizes grip length and load distribution across the entire fastener
- Coarse UNC threading facilitates quick installation and reduces cross-threading risks
Professional Applications & Engineering Value
These 5-40 UNC flat head slotted screws deliver exceptional engineering value in industrial applications where reliable fastening is critical. The zinc-plated steel construction provides superior corrosion protection for machinery, equipment assemblies, and metal fabrication projects. The combination of 60,000 psi tensile strength and Rockwell B70 hardness ensures these fully threaded screws maintain integrity under vibration and dynamic loads. The 82° countersink angle and flat head profile create seamless surfaces in pre-drilled applications, while the coarse thread design enables rapid installation in production environments. These industrial fasteners are particularly valuable in assembly lines, metal enclosures, and machinery where consistent performance and regulatory compliance are mandatory.
Specification Summary & Compliance
These 2" flat head screws feature precision 5-40 UNC coarse threads with Class 2A thread fit ensuring dimensional accuracy and reliable mating. Manufacturing and dimensional specifications conform to ASME B18.6.3 standards for consistent quality and performance. The products are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making them suitable for global industrial applications with strict chemical substance restrictions.
