S-91771A140 2-56 x 1" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws
Stainless Steel Phillips 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 passivated 18-8 stainless steel construction, ideal for harsh industrial environments
- Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B80 hardness for reliable load-bearing performance
- Precision thread engagement through Class 2A fit and UNC coarse threading, ensuring secure fastening and vibration resistance
- Optimal flush mounting with standard 82° countersink angle and flat head design for seamless surface integration
- Efficient installation using Phillips No. 1 drive, providing good torque transfer and reducing cam-out risks
- Full thread coverage across the 1" length for maximum grip and holding power in various material thicknesses
- Regulatory compliance meeting ASME B18.6.3 standards and environmental regulations for global industrial use
Professional Applications & Engineering Value
These 2-56 UNC flat head screws deliver critical engineering advantages in demanding applications where material integrity and precise fit are paramount. The passivated 18-8 stainless steel provides excellent resistance to oxidation and chemical exposure, making them ideal for electronics enclosures, machinery assemblies, and outdoor equipment. The fully threaded design and Class 2A thread fit ensure consistent clamping force distribution, preventing loosening under vibration while the 82° countersink angle enables flush mounting in precision-machined components. With 80,000 psi tensile strength, these Phillips drive screws maintain structural integrity in high-stress applications across aerospace, automotive, and industrial manufacturing sectors.
Specification Summary & Compliance
Manufactured to ASME B18.6.3 specifications with Class 2A thread fit and UNC coarse thread spacing. Features include 1" length, right-hand threading, and full threading. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in global industrial markets.
