S-91440A213 8-32 x 3" 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 driving versatility with combined Phillips/Slotted No. 2 drive for flexible installation tool options
- Maximum load distribution through the rounded head design that minimizes surface damage during tightening
- Reliable thread engagement with fully threaded UNC coarse spacing providing excellent pull-out resistance
- Consistent performance backed by 60,000 psi tensile strength and Rockwell B70 hardness ratings
- Precision fit assurance with Class 2A thread tolerance ensuring smooth assembly and disassembly
- Dual-drive convenience allowing use with both Phillips and flat-head screwdrivers for installation flexibility
Professional Applications & Engineering Value
These zinc-plated steel rounded head screws deliver critical engineering solutions for industrial assembly challenges where corrosion resistance and high tensile strength are paramount. The UNC coarse thread configuration with Class 2A fit provides rapid installation and superior holding power in materials ranging from metals to plastics, while the rounded head profile distributes clamping force evenly to prevent surface damage. The dual Phillips/Slotted drive system offers installation flexibility in confined spaces, making these 8-32 x 3" fully threaded screws ideal for machinery assembly, electrical enclosures, and structural frameworks where vibration resistance and long-term reliability are essential.
Specification Summary & Compliance
This 8-32 UNC coarse thread screw features precise Class 2A thread fit tolerances and 3" full threading for consistent performance. Manufactured to ASME B18.6.3 specifications with 60,000 psi tensile strength and Rockwell B70 hardness. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards for industrial applications requiring regulatory adherence.
