S-90275A546 1/4"-20 x 1 1/2" ASME B18.6.3 Steel Slotted Flat Head Screws
Steel Slotted Flat Head Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
- Optimized flush mounting with standard 82° countersink angle for seamless surface integration
- High-load capacity with 60,000 psi tensile strength and Rockwell B70 hardness for reliable performance
- Quick installation through UNC coarse threading and Class 2A fit for efficient assembly operations
- Universal compatibility with standard slotted drivers and right-hand thread direction
- Full-thread engagement along the 1-1/2" length for maximum holding power
- Regulatory compliance meeting ASME B18.6.3 specifications and environmental standards
Professional Applications & Engineering Value
This zinc-plated steel flat head screw delivers exceptional engineering value in industrial fastening applications where surface flushness and corrosion resistance are critical. The UNC coarse threading combined with Class 2A thread fit ensures rapid installation while maintaining precise tolerances for machinery assembly, electrical enclosures, and structural frameworks. The 82° countersink angle provides optimal seating in tapered holes, preventing protrusion in precision equipment. With 60,000 psi tensile strength and complete threading, it offers reliable performance in vibration-prone environments, making it ideal for manufacturing equipment, automotive components, and industrial machinery where flat head slotted screws must withstand mechanical stress while maintaining regulatory compliance.
Specification Summary & Compliance
Manufactured to ASME B18.6.3 specifications with Class 2A thread fit tolerance for consistent performance. Features 1/4"-20 UNC coarse threading with right-hand direction and standard flat head profile. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The inch system measurement ensures compatibility with North American industrial standards and equipment specifications.
