S-92210A412 4-40 x 1 3/8" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws
Stainless Steel Hex Drive 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 18-8 stainless steel and passivated finish for extended service life in harsh environments
- Exceptional tensile strength rated at 70,000 psi for reliable performance in demanding applications
- Precise Class 3A thread fit ensures secure fastening with minimal vibration loosening
- Hex drive design provides superior torque transmission and prevents tool slippage during installation
- 82° countersink angle creates flush mounting for clean, professional finishes
- Full threading along the entire 1-3/8" length maximizes grip strength and load distribution
- Comprehensive compliance with ASME B18.3, RoHS 3, and REACH ensures regulatory acceptance
Professional Applications & Engineering Value
These 4-40 UNC flat head screws deliver exceptional engineering value through their 18-8 stainless steel construction and passivated finish, providing superior corrosion resistance that prevents failure in moisture-rich industrial environments. The Class 3A thread fit with coarse thread spacing ensures rapid assembly while maintaining vibration resistance, making them ideal for machinery, electronic enclosures, and structural applications where reliability is critical. The hex drive design allows for high-torque installation without cam-out, while the 82° countersink angle ensures seamless integration into precision components. These fully threaded screws distribute stress evenly across the entire 1-3/8" length, preventing point loading and extending the service life of assembled products.
Specification Summary & Compliance
Manufactured to exacting ASME B18.3 standards with Class 3A thread fit precision and UNC coarse thread spacing. The 18-8 stainless steel construction achieves Rockwell B55 hardness and 70,000 psi tensile strength. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets. Features right-hand thread direction and standard flat head profile for consistent performance in professional applications.
