S-90283A846 1/4"-28 x 3/4" ASME B18.6.3 Steel Pan Head Slotted Screws
Steel Pan Head Slotted 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
- Enhanced corrosion resistance with zinc-plated steel construction, extending service life in demanding industrial environments
- Superior holding power from fully threaded design and 60,000 psi tensile strength for reliable, vibration-resistant fastening
- Precise thread engagement with Class 2A fine threads (1/4"-28 UNF) ensuring consistent fit and reduced cross-threading risks
- Optimized drive efficiency through slotted pan head design, allowing quick installation with standard tools
- Consistent mechanical performance backed by Rockwell B60 hardness for durable, deformation-resistant operation
- Broad regulatory compliance meeting ASME B18.6.3, RoHS 3, and REACH standards for global industrial applications
- Versatile right-hand threading compatible with standard UNF components for simplified assembly processes
Professional Applications & Engineering Value
Engineered for industrial assemblies requiring reliable fastening under dynamic loads, this zinc-plated steel rounded head screw combines high tensile strength (60,000 psi) with fine UNF threading to prevent loosening in machinery, automotive, and electrical enclosures. The slotted pan head facilitates rapid installation while the full threading maximizes grip length in thin materials. Its Class 2A thread fit ensures precision alignment, reducing assembly errors and maintenance downtime. Ideal for corrosion-prone environments, the zinc plating provides a sacrificial layer that prolongs fastener integrity, making it a cost-effective solution for OEM and MRO applications.
Specification Summary & Compliance
This screw adheres to ASME B18.6.3 dimensional standards with Class 2A thread tolerances for consistent interchangeability. The 1/4"-28 UNF fine thread profile follows unified screw thread specifications, while manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Mechanical properties include Rockwell B60 hardness and 60,000 psi tensile strength, validated for industrial duty cycles.
