S-91772A572 1/4"-28 x 2 1/2" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws
Stainless Steel Pan 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 passivated 18-8 stainless steel construction, ideal for harsh industrial environments and extended service life.
- High tensile strength of 70,000 psi ensures reliable load-bearing capacity and resistance to mechanical stress in demanding applications.
- Fine UNF threads and Class 2A fit provide precise, secure fastening with reduced risk of stripping and improved vibration resistance.
- Partially threaded design allows for controlled clamping force and easier alignment in assembly operations.
- Phillips No. 3 drive offers efficient torque transmission and compatibility with standard tools, speeding up installation.
- Rockwell B70 hardness enhances durability and wear resistance, minimizing deformation under repeated use.
- Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees adherence to industry standards and environmental safety for global supply chains.
Professional Applications & Engineering Value
This 1/4"-28 UNF pan head screw in passivated 18-8 stainless steel addresses critical engineering challenges in industrial settings, such as corrosion-induced failure and assembly inefficiencies. The fine thread spacing and Class 2A thread fit ensure tight, reliable connections in machinery, electronics, and automotive components, reducing maintenance downtime. With a partially threaded shank, it provides optimal grip in materials prone to splitting, while the Phillips drive facilitates quick installation with common tools. Ideal for rounded head screw applications requiring high strength and regulatory compliance, it supports long-term performance in environments exposed to moisture, chemicals, and mechanical stress.
Specification Summary & Compliance
This screw features precise inch system dimensions, including a 1/4"-28 UNF fine thread with Class 2A tolerance for consistent fit. It meets ASME B18.6.3 manufacturing specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity.
