S-90920A156 6-32 x 1 1/4" ASME B18.6.3 Alloy Steel Torx Flat Head Screws
Alloy Steel Torx Flat Head 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, extending service life in demanding industrial environments
- Enhanced torque transmission and reduced cam-out thanks to the Torx T10 drive system for reliable, secure installations
- Exceptional holding power with 60,000 psi tensile strength and Rockwell B70 hardness for high-stress applications
- Precise thread engagement with Class 3A fit and UNC coarse threads ensuring vibration resistance and easy assembly
- Maximum fastening coverage from fully threaded design, providing consistent clamping force along the entire 1-1/4" length
- Flush mounting capability with standard 82° countersink angle flat head profile for sleek, professional finishes
- Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards including RoHS 3 and REACH
Professional Applications & Engineering Value
These 6-32 UNC flat head screws deliver critical engineering solutions where vibration resistance and corrosion protection are paramount. The zinc-plated steel construction combined with Torx T10 drive prevents stripping during high-torque applications in machinery, electronics, and automotive assemblies. The coarse UNC threads and Class 3A thread fit ensure rapid installation and reliable performance in materials where fine threads might fail. With full threading along the 1-1/4" length, these screws distribute stress evenly, preventing loosening under dynamic loads while the 82° countersink creates seamless surfaces in precision equipment and metal fabrications.
Specification Summary & Compliance
Manufactured to ASME B18.6.3 specifications with Class 3A thread fit for precision tolerance. Features UNC coarse threads (6-32 size) with right-hand thread direction and standard 82° countersink angle. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.
