S-96669A242 3/8"-16 x 3/4" ASME B18.3 Sealing Tamper-Resistant Torx Flat Head Screws
Sealing Tamper-Resistant Torx Flat 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 tamper resistance with T45 Torx drive design to prevent unauthorized access in security-sensitive installations.
- Reliable pressure sealing up to 1500 psi through the integrated Buna-N rubber O-ring, ideal for fluid and gas containment systems.
- Excellent corrosion resistance from 18-8 stainless steel construction and passivated finish, ensuring longevity in harsh environments.
- Broad temperature compatibility (-40°F to 225°F) for stable performance across industrial and outdoor applications.
- High tensile strength of 70,000 psi provides dependable load-bearing capacity in demanding mechanical assemblies.
- Precise Class 2A thread fit with UNC coarse threading for faster installation and reduced cross-threading risks.
- Undercut flat head profile allows flush mounting while maintaining clamping force in countersunk holes.
Professional Applications & Engineering Value
Engineered for critical sealing and security applications, this 3/8"-16 UNC flat head screw combines 18-8 stainless steel durability with specialized functional elements. The tamper-resistant Torx drive (T45 size) deters vandalism in public infrastructure, access panels, and regulatory equipment, while the Buna-N rubber O-ring creates a reliable seal against leaks in pressurized systems up to 1500 psi. Its passivated finish enhances corrosion resistance where moisture, chemicals, or outdoor exposure are concerns. The fully threaded design and coarse UNC threads ensure rapid assembly and vibration resistance in machinery, enclosures, and fluid handling systems, making it a versatile security and sealing fastener for OEM and MRO requirements.
Specification Summary & Compliance
This fastener maintains Class 2A thread fit per UNC standards and is manufactured to ASME B18.3 specifications for dimensional consistency. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental and safety adherence. The screw features a 82° countersink angle and is designed for a maximum hole diameter of 0.397", providing precise installation alignment.
