S-90275A577 1/4"-20 x 5" 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
- Exceptional load-bearing capacity with 60,000 psi tensile strength to withstand high-stress applications
- Optimized flush mounting with standard 82° countersink angle for seamless surface integration
- Reliable thread engagement through UNC coarse threading and Class 2A fit for vibration-resistant connections
- Enhanced installation control with slotted drive design for precise torque application
- Full-length threading ensures maximum grip strength across the entire 5" fastener length
- Consistent performance backed by Rockwell B70 hardness for maintained mechanical properties
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these zinc-plated steel flat head screws solve critical challenges in machinery assembly, structural frameworks, and equipment manufacturing. The UNC coarse threading provides superior pull-out resistance in soft materials while maintaining installation efficiency. The 82° countersink angle ensures flush mounting in predrilled surfaces, eliminating protrusions that could interfere with moving components. With full threading along the 5" length, these slotted flat head screws deliver maximum clamping force across extended joints, making them ideal for construction, automotive, and industrial maintenance applications where vibration resistance and long-term reliability are paramount.
Specification Summary & Compliance
Manufactured to ASME B18.6.3 specifications with Class 2A thread fit tolerance for consistent mating with standard nuts and tapped holes. The UNC 1/4"-20 coarse thread profile ensures reliable engagement in various materials. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming safe use in regulated industries. Right-hand threaded with standard flat head profile for universal compatibility across industrial applications.
