S-91355A151 4-40 x 1/8" Steel Flanged Button Head Hex-Drive Screws
Steel Flanged Button Head Hex-Drive 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
- Exceptional tensile strength of 120,000 psi ensures reliable performance in high-stress industrial applications, reducing the risk of fastener failure.
- Superior corrosion resistance from the Black-Oxide finish extends service life in harsh environments, minimizing maintenance and replacement costs.
- Precision Class 3A thread fit with coarse UNC spacing provides secure, vibration-resistant connections for improved assembly integrity.
- Integrated flange design eliminates the need for separate washers, speeding up installation and distributing load more effectively.
- Hex drive compatibility with 1/16" drive size allows for easy installation and removal using standard tools, enhancing workflow efficiency.
- Full threading along the 1/8" length ensures maximum grip and holding power in a wide range of material thicknesses.
- High hardness rating (Rockwell C32) resists wear and deformation, maintaining thread integrity over repeated use.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, these 4-40 UNC Class 3A rounded head screws address common challenges like vibration loosening and corrosion. The Black-Oxide Alloy Steel construction, combined with a coarse thread spacing, ensures quick assembly and reliable performance in electronics, machinery, and automotive components. The flanged design provides a larger bearing surface, reducing surface damage and improving clamp load distribution. With a right-hand thread and hex drive, these screws offer consistent torque application and ease of maintenance, making them ideal for precision assemblies where durability and compliance are critical.
Specification Summary & Compliance
This screw features a 4-40 UNC thread size with Class 3A tolerance for precise fit, and is fully threaded with a length of 1/8". It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards, ensuring environmental safety and regulatory adherence in industrial applications.
