S-90275A133 5-40 x 1" 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
- Exceptional corrosion resistance with zinc-plated steel construction, ensuring long-term reliability in demanding environments.
- High tensile strength of 60,000 psi provides superior load-bearing capacity and prevents fastener failure under stress.
- Rockwell B70 hardness offers excellent durability and resistance to wear and deformation during installation and use.
- Fully threaded design maximizes grip and holding power along the entire 1" length for secure fastening.
- Class 2A thread fit with UNC coarse threading ensures easy, quick assembly and reduces cross-threading risks.
- 82° countersink angle and standard flat head profile allow for a flush, clean finish in countersunk holes.
- Slotted drive style enables simple installation with standard tools, ideal for maintenance and repair tasks.
Professional Applications & Engineering Value
These 5-40 UNC flat head slotted screws are engineered to address critical fastening challenges in industrial settings. Made from zinc-plated steel, they provide robust corrosion protection, extending service life in machinery, electrical enclosures, and assembly lines. The coarse UNC threads and Class 2A fit facilitate rapid installation while maintaining precise alignment, reducing assembly time and errors. With a tensile strength of 60,000 psi and full threading, these screws deliver reliable clamping force in applications like metal framing, automotive components, and equipment manufacturing, where vibration resistance and structural integrity are paramount. The flat head design with an 82° countersink ensures a seamless surface, preventing snagging and enhancing safety.
Specification Summary & Compliance
This product adheres to ASME B18.6.3 specifications, ensuring dimensional accuracy and performance consistency. Threads are manufactured to UNC coarse standards with Class 2A fit, providing reliable interchangeability. The screws are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming they are free of hazardous substances and safe for various industrial uses.
