S-90276A540 1/4"-20 x 3/4" ASME B18.6.3 Steel Round Head Slotted Screws
Steel Round 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, ideal for industrial environments requiring durable protection
- Exceptional mechanical strength with 60,000 psi tensile strength and Rockwell B69 hardness for reliable load-bearing performance
- Precise thread engagement through Class 2A UNC coarse threading, ensuring secure fastening and vibration resistance
- Easy installation and removal with standard slotted drive design, compatible with common hand tools
- Full-length threading provides maximum grip and uniform stress distribution across the entire fastener length
- Compliance with industry standards including ASME B18.6.3, guaranteeing dimensional accuracy and interchangeability
- Environmental regulation compliance with RoHS 3 and REACH, making them suitable for global industrial applications
Professional Applications & Engineering Value
This zinc-plated steel rounded head slotted screw delivers exceptional engineering value in demanding industrial settings. The combination of 60,000 psi tensile strength and Rockwell B69 hardness ensures reliable performance in high-stress applications, from machinery assembly to structural frameworks. The UNC coarse threading with Class 2A fit provides superior resistance to vibration loosening while enabling quick installation. The zinc plating offers critical corrosion protection, extending service life in harsh environments. These fully threaded screws maintain consistent clamping force across the entire engagement length, preventing joint failure in critical assemblies where uniform load distribution is essential for operational safety and longevity.
Specification Summary & Compliance
This fastener features precise 1/4"-20 UNC coarse threading with Class 2A thread fit tolerance for consistent engagement. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and mechanical properties. The product meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) regulations for chemical safety, ensuring suitability for industrial applications worldwide.
