S-97715A433 4-40 x 7/8" Brass Button Head Hex-Drive Screws
Brass 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
- Superior corrosion resistance with brass material, ideal for harsh industrial environments and electrical applications.
- High tensile strength of 50,000 psi ensures reliable load-bearing capacity and joint integrity under stress.
- Precision Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies.
- Hex drive design (1/16") allows for easy installation and removal with standard tools, reducing assembly time.
- Fully threaded 4-40 UNC coarse thread offers excellent grip and fast engagement in various materials.
- Rockwell B55 hardness enhances durability and wear resistance for long-term performance.
- Compliant with RoHS 3 and REACH regulations, ensuring safety and environmental standards for global supply chains.
Professional Applications & Engineering Value
These 4-40 UNC brass rounded head screws are engineered to address common challenges in precision assemblies, such as corrosion in electrical components or vibration loosening in machinery. The brass material naturally resists rust and galvanic corrosion, making them suitable for marine, automotive, and electronics industries. With a coarse UNC thread and Class 3A fit, they provide quick, secure fastening in softer materials like plastics or thin metals, reducing the risk of strip-out. The button-style rounded head and hex drive facilitate flush mounting and tool accessibility in confined spaces, enhancing efficiency in automated or manual assembly lines while maintaining 50,000 psi tensile strength for demanding applications.
Specification Summary & Compliance
This screw features a 4-40 UNC coarse thread with Class 3A precision fit, ensuring tight dimensional accuracy per inch system standards. It is fully threaded with a right-hand direction and manufactured to meet RoHS 3 (2015/863/EU) compliance under exemption 6(c) for lead in copper alloys, as well as REACH (EC 1907/2006) adherence. The specifications include a length of 7/8", head diameter of 0.213", and drive size of 1/16", supporting reliable performance in industrial fastening applications.
