S-90288A540 1/4"-20 x 3/4" Tamper-Resistant One-Way-Drive Stainless Steel Round Head Screws
Tamper-Resistant One-Way-Drive Stainless Steel Round Head Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 stainless steel and passivated finish, ideal for harsh industrial environments.
- High tensile strength of 80,000 psi ensures reliable performance in demanding heavy-duty applications.
- Coarse UNC thread with Class 2A fit provides easy installation and secure fastening in various materials.
- Fully threaded design maximizes grip and load distribution along the entire screw length.
- Rockwell B96 hardness offers excellent durability and resistance to wear and deformation.
- One-way drive rounded head allows for tamper-resistant assembly in security-sensitive installations.
- Compliance with RoHS 3 and REACH ensures environmental safety and regulatory acceptance in global markets.
Professional Applications & Engineering Value
This 18-8 stainless steel rounded head screw is engineered to address common industrial challenges such as corrosion, vibration loosening, and high-stress conditions. The passivated finish enhances its ability to withstand moisture, chemicals, and outdoor exposure, making it suitable for industrial applications in machinery, construction, and automotive sectors. Its UNC coarse thread and Class 2A fit ensure quick, reliable assembly with reduced risk of cross-threading, while the fully threaded design provides consistent clamping force. The one-way drive adds tamper resistance, ideal for public or security-focused installations where disassembly must be controlled. By combining high tensile strength and corrosion resistance, this screw delivers long-term reliability and reduces maintenance costs in demanding environments.
Specification Summary & Compliance
This product adheres to precise dimensional standards, including UNC coarse thread with Class 2A fit for consistent threading accuracy. It meets manufacturing specifications for 18-8 stainless steel material and passivated finish, ensuring performance in various conditions. Compliance is confirmed with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), supporting use in regulated industrial and commercial applications without environmental concerns.
