S-92949A332 5-40 x 3/4" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws
Stainless Steel Button Head Hex-Drive 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 industrial environments.
- High tensile strength of 70,000 psi ensures reliable, long-lasting fastening under demanding loads and vibrations.
- Precise Class 3A thread fit provides excellent engagement and reduces the risk of cross-threading during installation.
- Hex drive design (5/64") allows for secure tool engagement and efficient installation with standard hex keys.
- Fully threaded coarse UNC pattern enables faster driving and superior holding power in a wide range of materials.
- Rounded (button) head profile offers a low-profile, finished appearance while minimizing snagging risks.
- Compliance with ASME B18.3, RoHS 3, and REACH guarantees adherence to strict industrial safety and environmental standards.
Professional Applications & Engineering Value
These 5-40 UNC rounded head screws are engineered to address critical fastening challenges in industrial settings. The 18-8 stainless steel material, combined with a passivated finish, provides exceptional resistance to corrosion and oxidation, making them suitable for applications in machinery, electronics, and outdoor equipment where exposure to moisture and chemicals is a concern. The coarse thread and Class 3A fit ensure quick, secure installation with minimal risk of stripping, while the hex drive offers superior torque transmission for reliable assembly. With a Rockwell B55 hardness and 70,000 psi tensile strength, these screws maintain integrity under stress, reducing maintenance needs and downtime in heavy-duty fastening applications.
Specification Summary & Compliance
This screw features a 5-40 UNC coarse thread with a Class 3A fit for precise dimensional accuracy and secure fastening. It is manufactured in accordance with ASME B18.3 specifications, ensuring consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and safe for various industrial uses.
