S-90272A434 1/2"-13 x 1 1/4" ASME B18.6.3 Steel Pan Head Phillips Screws
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 zinc plating that protects against rust and extends service life in harsh industrial environments
- High tensile strength of 60,000 psi ensures reliable load-bearing capacity and prevents fastener failure under stress
- Rockwell B70 hardness provides excellent durability and resistance to wear during repeated installation and removal
- UNC coarse threading with Class 2A fit enables quick assembly, reduces cross-threading risks, and maintains secure connections
- Phillips pan head design offers easy drive engagement and a low-profile finish that sits flush with surfaces
- Full threading along the 1-1/4" length allows for maximum grip and adjustability in various material thicknesses
- Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees consistent quality, safety, and environmental responsibility
Professional Applications & Engineering Value
This zinc-plated steel pan head screw is engineered to address common industrial fastening challenges, such as vibration loosening and environmental degradation. The UNC coarse thread design ensures rapid installation in metal, wood, and composite assemblies, while the Class 2A thread fit maintains precision without sacrificing speed. With a 60,000 psi tensile strength and Rockwell B70 hardness, it withstands heavy loads and repetitive stress in machinery, construction, and automotive applications. The zinc plating adds a protective barrier against moisture and chemicals, reducing maintenance needs. Its fully threaded shank and Phillips drive make it ideal for production lines requiring efficient, reliable fastening with standard tools.
Specification Summary & Compliance
This screw meets ASME B18.6.3 specifications for dimensional accuracy and performance, with a Class 2A thread fit ensuring proper clearance and interchangeability. It is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to strict environmental and safety standards. Threading follows UNC coarse standards (1/2"-13 size), and the material—zinc-plated steel—provides consistent hardness and strength as verified by testing.
