S-90276A544 1/4"-20 x 1 1/4" 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, extending service life in demanding industrial environments
- High tensile strength of 60,000 psi ensures reliable, heavy-duty fastening that withstands substantial mechanical stress
- Rockwell B69 hardness provides excellent durability and resistance to wear during installation and use
- Fully threaded UNC coarse design enables faster installation and superior grip in various materials
- Class 2A thread fit offers consistent, precise engagement for reduced cross-threading and assembly errors
- Slotted round head design allows for easy installation with standard tools while providing a low-profile finish
- Compliance with ASME B18.6.3 guarantees manufacturing consistency and interchangeability in professional applications
Professional Applications & Engineering Value
Engineered for industrial applications requiring dependable fastening under stress, these zinc-plated steel screws combine material strength with protective coating to solve common corrosion and failure issues. The fully threaded UNC coarse thread design ensures maximum holding power in wood, metal, and plastic assemblies, while the slotted round head facilitates quick installation in confined spaces. With 60,000 psi tensile strength and Rockwell B69 hardness, they maintain integrity in vibrating machinery, construction frameworks, and outdoor equipment, reducing maintenance needs and replacement costs. Their standardized 1/4"-20 thread size and right-hand threading make them ideal for production lines seeking efficiency and reliability.
Specification Summary & Compliance
This screw features precise Class 2A thread fit per UNC standards, ensuring dimensional accuracy for consistent performance. It meets ASME B18.6.3 specifications for slotted round head screws, with a length of 1-1/4 inches and full threading. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming adherence to environmental and safety regulations for industrial use.
