S-91249A647 1/4"-20 x 5" 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 black-oxide coated 18-8 stainless steel construction, ideal for harsh industrial environments
- Exceptional load-bearing capacity with 70,000 psi tensile strength for reliable performance in heavy-duty applications
- Easy installation and removal thanks to the No. 3 Phillips drive and standard pan head design
- Secure fastening with precise thread engagement from UNC coarse threading and Class 2A thread fit
- Full-length threading ensures maximum grip and uniform stress distribution along the entire 5" length
- Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards (RoHS 3, REACH)
- Versatile industrial applicability with rounded head profile preventing surface damage and enabling flush mounting
Professional Applications & Engineering Value
This black-oxide stainless steel Phillips pan head screw delivers critical engineering solutions where corrosion resistance and structural integrity are paramount. The 18-8 stainless steel core combined with black-oxide surface treatment provides enhanced protection against oxidation and chemical exposure in manufacturing, construction, and outdoor equipment applications. The 1/4"-20 UNC coarse thread with Class 2A fit ensures rapid assembly and vibration resistance, while the fully threaded 5" length maintains consistent clamping force across thick materials. Engineers specify these ASME B18.6.3 compliant fasteners for machinery assembly, structural frameworks, and maintenance operations where 70,000 psi tensile strength prevents joint failure under dynamic loads.
Specification Summary & Compliance
Manufactured to ASME B18.6.3 standards with Class 2A thread fit tolerance for precise engagement. Features 1/4"-20 UNC coarse threads in right-hand direction with standard pan head configuration. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. All dimensions conform to inch system measurements with 0.492" head diameter and 5" length.
