S-90272A535 1/4"-20 x 3/8" 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 for extended service life in demanding industrial environments
- High tensile strength of 60,000 psi ensures reliable fastening under heavy loads and vibration
- Rockwell B70 hardness provides excellent durability and resistance to wear during installation and use
- Class 2A thread fit with UNC coarse threads enables quick assembly and secure holding power
- #3 Phillips drive design offers efficient installation with standard tools while minimizing cam-out
- Fully threaded shank maximizes grip length and distributes stress evenly across the entire fastener
- Pan head profile combines low-profile appearance with substantial bearing surface for secure fastening
Professional Applications & Engineering Value
This zinc-plated steel pan head screw delivers exceptional engineering value across multiple industrial sectors. The combination of 60,000 psi tensile strength and Rockwell B70 hardness makes it ideal for applications requiring reliable fastening under stress, such as machinery assembly, electrical enclosures, and automotive components. The UNC coarse threads provide excellent engagement in various materials while resisting cross-threading, and the zinc plating offers crucial corrosion protection in environments exposed to moisture or chemicals. The #3 Phillips drive ensures compatibility with standard tools, streamlining installation processes in production lines and maintenance operations. These rounded head screws are engineered to maintain integrity in vibration-prone applications, reducing the need for frequent retightening and maintenance interventions.
Specification Summary & Compliance
This fastener maintains precise Class 2A thread fit tolerances with 1/4"-20 UNC coarse threads and features a 3/8" length with fully threaded design. Manufacturing and dimensional compliance adhere to ASME B18.6.3 specifications, ensuring interchangeability and reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting current environmental and safety standards for industrial applications worldwide.
