S-91900A649 3/8"-16 x 1/2" ASME B18.3 Tamper-Resistant Torx Stainless Steel Button Head Screws
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
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Key Features & Benefits at a Glance
- Superior tamper resistance with T45 Torx drive design, preventing unauthorized access in high-security environments.
- Exceptional corrosion resistance from 18-8 Stainless Steel and passivated finish, ensuring long-term reliability in harsh conditions.
- High tensile strength of 70,000 psi provides reliable fastening under heavy loads and vibration.
- Precise Class 3A thread fit ensures smooth installation and secure engagement with mating components.
- Low-profile rounded button head offers a flush finish, reducing snagging and improving aesthetic appeal.
- Full threading and coarse UNC thread enables faster assembly and stronger holding power in various materials.
- Consistent hardness (Rockwell B70) maintains structural integrity and resists wear over repeated use.
Professional Applications & Engineering Value
This T45 Torx rounded head screw is engineered for industrial applications where security, corrosion resistance, and durability are critical. The 18-8 Stainless Steel construction, combined with a passivated finish, effectively resists rust and chemical exposure in environments like marine, food processing, and outdoor machinery. The tamper-resistant Torx drive deters vandalism and unauthorized disassembly, making it ideal for public infrastructure, electrical enclosures, and transportation equipment. Its Class 3A thread fit and coarse UNC threading ensure quick, reliable fastening in metals and plastics, reducing installation time and minimizing the risk of cross-threading. This screw delivers consistent performance in high-vibration settings, maintaining clamp load and preventing loosening.
Specification Summary & Compliance
This screw meets ASME B18.3 specifications for dimensional accuracy and performance. Threading conforms to UNC coarse thread standards with a Class 3A fit for precise tolerance. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for various industrial applications.
