S-91870A725 8-32 x 1 1/2" ASME B18.3 Tamper-Resistant Torx Plus Stainless Steel Flat Head Screws
Tamper-Resistant Torx Plus Stainless Steel 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
- Enhanced tamper resistance with Torx Plus IPR20 drive prevents unauthorized removal in high-security environments
- Superior corrosion protection through 18-8 stainless steel construction and passivated finish for extended service life
- Maximum load-bearing capacity with 70,000 psi tensile strength and Rockwell B70 hardness for heavy-duty applications
- Precision thread engagement with Class 3A fit and UNC coarse threading ensures reliable fastening performance
- Full-threaded design provides consistent clamping force along the entire 1-1/2" length
- Industry-standard compliance with ASME B18.3 specifications guarantees dimensional accuracy and interchangeability
- Environmental regulation adherence meeting RoHS 3 and REACH requirements for safe industrial use
Professional Applications & Engineering Value
This 8-32 UNC flat head screw with tamper-resistant Torx Plus drive addresses critical security and durability challenges in industrial settings. The 18-8 stainless steel material combined with passivated finish creates a robust barrier against chemical exposure and atmospheric corrosion, making it ideal for manufacturing equipment, electrical enclosures, and outdoor infrastructure. The Class 3A thread fit and standard 82° countersink angle ensure flush mounting without compromising structural integrity. Engineers specify these security fasteners for applications where vibration resistance and unauthorized access prevention are paramount, while the fully threaded design maintains consistent pressure distribution across joined components in machinery assembly and maintenance operations.
Specification Summary & Compliance
Manufactured to ASME B18.3 standards with Class 3A thread fit precision and UNC coarse threading. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Features include 8-32 thread size, 1-1/2" length, IPR20 drive size, and 82° countersink angle. The passivated finish on 18-8 stainless steel provides additional corrosion protection while maintaining the material's inherent strength characteristics.
