S-91440A639 3/8"-16 x 6" ASME B18.6.3 Steel Round Head Combination Phillips/Slotted Screws
Steel Round 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 zinc-plated steel construction for extended service life in demanding environments
- Enhanced installation versatility with combined Phillips/Slotted drive (No. 4) accommodating various tool types
- Reliable coarse thread engagement with UNC 3/8"-16 threading for faster assembly and reduced cross-threading risk
- Optimized load distribution through fully threaded 6" length for consistent clamping force across applications
- Precision thread compatibility with Class 2A fit ensuring smooth installation and secure fastening
- Industry-standard compliance meeting ASME B18.6.3 specifications for guaranteed dimensional accuracy
- Environmental regulation adherence with RoHS 3 and REACH compliance for safe industrial usage
Professional Applications & Engineering Value
This zinc-plated steel rounded head screw delivers exceptional performance in industrial applications where corrosion resistance and structural integrity are paramount. The UNC coarse thread (3/8"-16) design significantly reduces installation time while preventing cross-threading in high-volume assembly operations. The combination of Phillips/Slotted drive provides flexibility for maintenance crews using different tool systems, while the fully threaded 6-inch length ensures uniform stress distribution across the entire fastener. Engineered to ASME B18.6.3 standards, these screws maintain precise dimensional consistency for replacement parts and new installations in machinery, structural frameworks, and heavy equipment where Class 2A thread fit guarantees reliable performance without binding or loosening under vibration.
Specification Summary & Compliance
This fastener features UNC coarse threading (3/8"-16) with Class 2A thread fit tolerance for precise engagement. Manufacturing complies with ASME B18.6.3 specifications ensuring dimensional accuracy. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming compliance with hazardous substance restrictions for industrial use.
