S-95894A112 4-40 x 3/8" 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
- Permanent vibration resistance with factory-applied epoxy thread locker that eliminates the need for secondary locking processes
- Superior corrosion resistance provided by 18-8 Stainless Steel construction, ideal for harsh industrial environments
- Enhanced drive security with T8 Torx drive that prevents cam-out and allows for higher torque application
- Reliable performance under extreme conditions with temperature resistance from -65° to 400° F
- Precision thread engagement with Class 3A fit ensuring consistent clamping force and reduced assembly issues
- Optimized for high-stress applications with 70,000 psi tensile strength and Rockwell B55 hardness
- Streamlined assembly process with fully threaded design and rounded button head profile
Professional Applications & Engineering Value
This 4-40 UNC T8 Torx rounded head screw delivers critical engineering solutions where vibration resistance and environmental durability are paramount. The epoxy thread locker begins hardening within 4 hours and reaches full strength in 72 hours, creating a permanent bond that withstands extreme thermal cycling from -65° to 400° F. Manufactured from 18-8 Stainless Steel, these screws maintain integrity in corrosive environments while the Class 3A thread fit and coarse thread spacing ensure rapid installation with minimal cross-threading risk. The T8 Torx drive system provides superior torque transfer for high-tension applications in electronics, aerospace, and precision machinery assemblies where reliability cannot be compromised.
Specification Summary & Compliance
This fastener features precision 4-40 UNC coarse threads with Class 3A fit for optimal engagement, right-hand thread direction, and fully threaded design. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring regulatory compliance for global industrial applications. The epoxy adhesive thread locker provides permanent locking performance with specified temperature resistance and curing characteristics.
