S-91772A910 4-48 x 1" 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 environments and long-term reliability
- Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for demanding applications
- Precise thread engagement through Class 2A thread fit and UNF fine threading, ensuring secure fastening and vibration resistance
- Optimized drive performance with Phillips #1 drive and pan head design for efficient installation and reduced cam-out
- Full thread coverage along the 1" length provides maximum grip and load distribution across connected components
- Regulatory compliance assurance meeting ASME B18.6.3 specifications and RoHS/REACH environmental standards
- Right-hand thread direction enables standard installation procedures and compatibility with common assembly tools
Professional Applications & Engineering Value
Engineered for precision industrial fastening applications, these 4-48 UNF pan head Phillips machine screws deliver critical performance where fine thread spacing and material integrity matter most. The passivated 18-8 stainless steel construction provides excellent corrosion resistance in manufacturing, electronics, and machinery assemblies exposed to moisture or chemicals. The fully threaded design ensures maximum contact surface, preventing loosening under vibration while the Class 2A thread fit maintains precise tolerances for repeated disassembly and reassembly cycles. These screws solve common engineering challenges by combining high-strength performance (70,000 psi tensile strength) with standardized Phillips #1 drive compatibility, reducing installation time and tooling requirements in automated or manual assembly lines.
Specification Summary & Compliance
This 1" machine screw features 4-48 UNF fine threads with Class 2A thread fit per unified thread standards, ensuring dimensional accuracy and interchangeability. Manufacturing complies with ASME B18.6.3 specifications for machine screws, while material composition and surface treatment meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements for environmental safety and restricted substance control.
