S-96640A248 1/4"-20 x 7/8" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws
Stainless Steel Phillips 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 Black-Oxide coated 18-8 Stainless Steel construction, ideal for harsh industrial environments
- High tensile strength of 80,000 psi ensures reliable fastening under heavy loads and vibration
- Rockwell B80 hardness provides excellent durability and resistance to wear during installation
- Fully threaded UNC coarse pattern delivers faster installation and superior holding power
- 82° countersink angle allows for flush mounting in standard applications
- Class 2A thread fit ensures consistent, precise engagement with mating components
- Phillips No. 3 drive offers common tool compatibility while preventing cam-out during tightening
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these flat head screws solve critical fastening challenges where corrosion resistance and structural integrity are paramount. The Black-Oxide 18-8 Stainless Steel construction provides exceptional protection against rust and chemical exposure in manufacturing, machinery, and outdoor equipment. The combination of 80,000 psi tensile strength and fully threaded UNC coarse pattern ensures vibration-resistant connections that maintain clamp force in high-stress assemblies. The 82° countersink angle and flat head profile create seamless, flush surfaces ideal for applications requiring aerodynamic or safety-conscious designs, while the Phillips drive enables efficient installation with standard tools.
Specification Summary & Compliance
This 1/4"-20 x 7/8" flat head screw features precise Class 2A thread fit tolerances and UNC coarse threading manufactured to ASME B18.6.3 specifications. The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets. All dimensional characteristics including head diameter (0.477"), head height (0.153"), and thread specifications meet established industrial standards for consistent performance.
