S-94135A135 8-32 x 2 1/2" ASME B18.6.3 Tamper-Resistant Drilled Spanner Stainless Steel Truss Head Screws
Tamper-Resistant Drilled Spanner Stainless Steel Truss 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
- Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh environments
- Enhanced load distribution due to the wide rounded truss head design, reducing surface pressure and material damage
- Reliable fastening performance with 70,000 psi tensile strength and Rockwell B87 hardness for high-stress applications
- Secure tamper-resistant installation using the drilled spanner drive, preventing unauthorized access
- Optimized thread engagement through UNC coarse threading and Class 2A fit, ensuring quick assembly and vibration resistance
- Versatile partial threading allowing unthreaded shank sections for precise clamping and alignment in assembled components
- Long-term durability backed by compliance with ASME B18.6.3, RoHS, and REACH standards for safety and reliability
Professional Applications & Engineering Value
This 8-32 UNC partially threaded rounded truss head screw is engineered to address common industrial challenges such as corrosion, vibration loosening, and installation security. The 18-8 stainless steel material combined with a passivated finish provides excellent resistance to rust and chemicals, making it suitable for outdoor equipment, marine hardware, and food processing machinery. The wide truss head distributes clamping force over a larger area, preventing damage to soft materials while the drilled spanner drive offers tamper-resistant fastening for public fixtures or security panels. With coarse UNC threads and a partially threaded design, it ensures rapid assembly and stable grip in dynamic environments, reducing maintenance needs and downtime in manufacturing, construction, and automotive applications.
Specification Summary & Compliance
This screw features precise Class 2A thread fit and UNC coarse threading with a diameter of 0.164" and length of 2 1/2". It is manufactured in accordance with ASME B18.6.3 specifications and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safety and quality for industrial use.
