S-95894A113 4-40 x 1/2" Thread-Locking Stainless Steel Button Head Torx Screws
Thread-Locking Stainless Steel Button Head Torx 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
- Vibration-resistant locking with factory-applied epoxy thread locker prevents loosening in high-stress environments
- Superior corrosion resistance from 18-8 stainless steel construction ensures long-term reliability in harsh conditions
- Enhanced torque transmission with T8 Torx drive reduces cam-out risk and tool slippage during installation
- Precision thread engagement through Class 3A fit and UNC coarse threading provides consistent clamping force
- Wide temperature tolerance from -65° to 400°F maintains performance across diverse operating environments
- High-strength fastening with 70,000 psi tensile strength and Rockwell B55 hardness withstands heavy loads
- Regulatory compliance with RoHS 3 and REACH standards ensures environmental and safety requirements are met
Professional Applications & Engineering Value
These 4-40 UNC T8 Torx rounded head screws deliver critical vibration resistance in demanding industrial applications where secure fastening is paramount. The factory-applied epoxy thread locker begins hardening within 4 hours and reaches full strength in 72 hours, creating permanent bonds that withstand extreme thermal cycling from -65° to 400°F. Manufactured from 18-8 stainless steel with Class 3A thread fit and UNC coarse threading, these fully threaded fasteners provide superior corrosion resistance while ensuring precise engagement in electronic enclosures, machinery assemblies, and automotive components. The rounded button head profile offers a low-profile finish that minimizes snagging while the T8 Torx drive enables higher torque application without damaging the drive recess.
Specification Summary & Compliance
These screws feature 4-40 UNC coarse threads with Class 3A precision fit and fully threaded design for maximum engagement. The 1/2" length and right-hand thread direction provide standard installation compatibility. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring restricted substance compliance for global industrial applications.
