S-91773A564 1/4"-28 x 1 1/2" ASME B18.6.3 Stainless Steel Round Head Phillips Screws
Stainless Steel Round Head Phillips 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 18-8 stainless steel construction and passivated finish, ideal for harsh environments
- High tensile strength of 100,000 psi ensures reliable load-bearing capacity and joint integrity under stress
- Fine UNF threading (1/4"-28) provides enhanced vibration resistance and precise fastening in critical assemblies
- Class 2A thread fit guarantees consistent, easy installation while maintaining secure engagement
- Phillips No. 3 drive design offers efficient torque transfer and reduced cam-out during high-volume applications
- Full 1-1/2" threading maximizes grip range and distribution across connected materials
- Rockwell B100 hardness delivers excellent durability and wear resistance for long service life
Professional Applications & Engineering Value
This 18-8 stainless steel rounded head screw addresses common industrial challenges like corrosion-induced failure and assembly inefficiency. The passivated finish significantly enhances oxidation resistance, making it suitable for outdoor equipment, marine hardware, and chemical processing installations where moisture exposure is frequent. Its 1/4-28 UNF fine thread configuration ensures tight sealing and stability in vibrating machinery, reducing maintenance needs. The Phillips No. 3 drive facilitates quick installation in automated or manual settings, while the fully threaded design allows uniform stress distribution across the entire length. Engineers value its compliance with ASME B18.6.3 for dimensional consistency, ensuring interchangeability and reliability in OEM and MRO applications.
Specification Summary & Compliance
Manufactured to ASME B18.6.3 specifications, this screw maintains precise Class 2A thread fit tolerances for consistent performance. The UNF fine thread (1/4"-28) and right-hand threading adhere to standardized industrial requirements. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions are met for global supply chain integration.
