S-90058A201 8-32 x 1 1/4" Tamper-Resistant Tri-Groove-Drive Steel Round Head Screws
Tamper-Resistant Tri-Groove-Drive Steel Round Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
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Key Features & Benefits at a Glance
- Superior corrosion resistance with zinc-plated steel construction for extended service life in harsh industrial environments
- Exceptional tensile strength rated at 80,000 PSI ensures reliable performance under high-stress applications
- Precision Class 3A thread fit provides superior engagement and vibration resistance in critical assemblies
- Fully threaded coarse spacing delivers maximum holding power and faster installation across various materials
- Optimized tri-groove drive system (No. 6 size) enables secure tool engagement and reduced cam-out during installation
- High rounded head profile offers improved clearance and professional appearance in visible applications
- Rockwell C28 hardness maintains thread integrity and prevents stripping during repeated use
Professional Applications & Engineering Value
These 8-32 UNC zinc-plated steel screws deliver critical engineering advantages where corrosion resistance and high tensile strength are paramount. The fully threaded coarse spacing design ensures maximum pull-out resistance in sheet metal, machinery, and structural applications, while the Class 3A thread fit provides precise engagement that withstands vibration and thermal cycling. The tri-groove drive system offers superior torque transmission compared to standard drives, reducing installation time and tool wear. With their high rounded head profile and zinc-plated finish, these industrial fasteners maintain performance in manufacturing, automotive, and electrical enclosure applications where both durability and appearance matter.
Specification Summary & Compliance
Manufactured to precise UNC thread standards with Class 3A thread fit tolerance for superior engagement. Features 8-32 thread size with coarse spacing and right-hand thread direction. Dimensions include 1-1/4" length, 0.28" head diameter, and 0.148" head height. Complies with industry standards for mechanical properties and RoHS/REACH environmental requirements.
