S-91802A573 1/4"-20 x 4 1/2" ASME B18.6.3 Stainless Steel Phillips Oval Head Screws
Stainless Steel Phillips Oval Head 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, ensuring long-term reliability in harsh industrial environments
- High tensile strength of 80,000 psi provides exceptional load-bearing capacity for demanding mechanical applications
- Rockwell B80 hardness maintains structural integrity under vibration and stress, reducing fastener failure risks
- Class 2A thread fit with UNC coarse threading enables quick installation and secure fastening in various materials
- Phillips No. 3 drive design offers improved torque transmission and reduced cam-out during assembly
- Partial threading configuration allows for precise clamping force distribution across connected components
- Comprehensive compliance with ASME B18.6.3, RoHS 3, and REACH standards ensures quality and environmental responsibility
Professional Applications & Engineering Value
This 1/4"-20 oval head screw delivers critical engineering advantages through its passivated 18-8 stainless steel composition and optimized mechanical properties. The UNC coarse threads provide excellent engagement in metal, wood, and composite substrates, while the partial threading design prevents joint loosening under dynamic loads. The oval head profile with Phillips No. 3 drive combines aesthetic flush mounting with efficient installation in confined spaces. These industrial screws solve common fastener challenges in machinery assembly, electrical enclosures, and structural frameworks where corrosion resistance, 80,000 psi tensile strength, and regulatory compliance are paramount for operational safety and equipment longevity.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit and UNC coarse threading (1/4"-20). This 4 1/2" partially threaded screw features a standard oval head profile with 82° countersink angle and complies with ASME B18.6.3 mechanical specifications. The fastener meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring restricted substance compliance for global industrial applications.
