S-91997A217 10-32 x 1/2" ASME B18.3 Sealing Tamper-Resistant Torx Stainless Steel Button Head Screws
Sealing Tamper-Resistant Torx Stainless Steel Button Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
Installation & Application
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Key Features & Benefits at a Glance
- Superior Sealing Performance: Integrated Buna-N rubber O-ring provides reliable sealing up to 1500 psi, preventing leaks in pressurized applications.
- Exceptional Corrosion Resistance: 18-8 Stainless Steel construction with passivated finish ensures long-term durability in harsh environments.
- Enhanced Security & Tamper Resistance: Tamper-Resistant Torx T25 drive prevents unauthorized removal, ideal for public or secured facilities.
- Precision Thread Fit: Class 3A UNF fine threads deliver superior engagement and vibration resistance in critical assemblies.
- Broad Temperature Tolerance: O-ring maintains integrity across -40° to 225°F, suitable for extreme thermal cycling.
- High Tensile Strength: 70,000 psi tensile rating supports heavy-duty mechanical fastening requirements.
- Regulatory Compliance: Meets ASME B18.3 standards with RoHS 3 and REACH compliance for global industrial use.
Professional Applications & Engineering Value
Engineered for high-pressure sealing applications, this 10-32 UNF rounded head screw solves critical leakage challenges in hydraulic systems, pneumatic controls, and fluid processing equipment. The 18-8 Stainless Steel material combined with passivated finish provides exceptional resistance to chemical corrosion and environmental degradation, while the Buna-N rubber O-ring ensures consistent performance under thermal expansion and pressure fluctuations. The tamper-resistant Torx T25 drive adds security layers for public infrastructure and regulated industries, making it ideal for industrial machinery, automotive assemblies, and electronic enclosures where reliability and compliance are paramount.
Specification Summary & Compliance
This screw features Class 3A thread fit with UNF fine threading (10-32) and fully threaded design for maximum engagement. Manufacturing adheres to ASME B18.3 specifications with dimensional accuracy (0.361" head diameter, 1/2" length). Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material traceability.
