S-90604A559 8-32 x 1/4" ASME B18.6.3 Stainless Steel Pan Head Combination Phillips/Slotted Screws
Stainless Steel Pan Head Combination Phillips/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
- Superior corrosion resistance with 18-8 Stainless Steel construction and passivated finish, ideal for harsh industrial environments
- Exceptional mechanical strength delivering 100,000 psi tensile strength and Rockwell B100 hardness for reliable, long-term fastening
- Versatile installation options with combined Phillips/Slotted drive (No. 2 size) accommodating various tool types and reducing inventory needs
- Precision thread engagement featuring Class 2A UNC coarse threads ensuring consistent, secure fits in diverse materials
- Optimized head design with rounded pan profile providing a finished appearance while maximizing drive contact surface
- Full-threaded length enabling complete thread engagement and uniform stress distribution across the entire 1/4" fastener
- Regulatory compliance assurance meeting ASME B18.6.3 specifications while adhering to RoHS 3 and REACH environmental standards
Professional Applications & Engineering Value
These 8-32 UNC rounded head screws deliver critical performance where corrosion resistance and high tensile strength are paramount. The 18-8 Stainless Steel composition with passivated finish provides exceptional protection against oxidation and chemical exposure in manufacturing, marine, and food processing equipment. The coarse UNC threads with Class 2A fit ensure rapid installation and reliable holding power in metals, plastics, and composite materials. The dual Phillips/Slotted drive accommodates both precision assembly tools and field maintenance equipment, while the rounded pan head design offers a clean aesthetic finish without sharp edges. These fully threaded industrial fasteners maintain consistent clamping force across their entire length, preventing loosening under vibration and thermal cycling.
Specification Summary & Compliance
Manufactured to ASME B18.6.3 specifications with Class 2A thread fit tolerance for consistent engagement. Features UNC coarse threads (8-32 size) with 1/4" length and standard rounded pan head profile (0.322" diameter). Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets.
