S-90283A126 5-40 x 3/8" ASME B18.6.3 Steel Pan Head Slotted Screws
Steel Pan Head Slotted 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
- Excellent thread engagement with 5-40 UNC coarse threading that resists loosening under vibration
- Optimized drive performance with standard slotted drive for reliable installation with common tools
- Enhanced mechanical strength with Rockwell B60 hardness rating for dependable load-bearing capability
- Maximum fastening coverage through fully threaded design ensuring consistent grip along the entire 3/8" length
- Precise thread compatibility with Class 2A fit for smooth assembly and consistent torque performance
- Rounded pan head design providing a finished appearance while distributing clamping force effectively
Professional Applications & Engineering Value
These zinc-plated steel rounded head screws deliver exceptional value in industrial assembly applications where corrosion resistance and mechanical reliability are paramount. The 5-40 UNC coarse thread configuration ensures rapid installation and superior vibration resistance in machinery, electrical enclosures, and automotive components. The fully threaded design maximizes thread engagement across the entire fastener length, providing consistent clamping force in materials ranging from metals to reinforced plastics. With Rockwell B60 hardness, these screws maintain structural integrity under repetitive stress cycles, while the slotted drive offers compatibility with standard installation tools for maintenance-friendly applications across manufacturing and equipment sectors.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances for consistent assembly performance, these screws conform to ASME B18.6.3 mechanical standards. The zinc-plated steel construction meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements, ensuring environmental regulatory adherence for global industrial applications. The UNC coarse thread profile and right-hand thread direction follow standardized inch system specifications for reliable interchangeability in North American and international markets.
