S-92451A108 4-40 x 3/8" ASME B18.6.3 Brass Slotted Flat Head Screws
Brass Slotted Flat 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 brass construction, ideal for harsh environments and long-term reliability.
- Exceptional tensile strength of 50,000 psi ensures secure, durable fastening under high-stress conditions.
- Rockwell B50 hardness provides excellent wear resistance and maintains thread integrity over repeated use.
- Class 2A thread fit with UNC coarse threading offers easy, quick assembly and reliable engagement in various materials.
- 82° countersink angle and flat head design allows for a flush, professional finish, reducing snagging and improving aesthetics.
- Fully threaded shank maximizes grip and holding power across the entire length for consistent performance.
- Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees adherence to industry standards and environmental safety regulations.
Professional Applications & Engineering Value
These 4-40 UNC brass flat head slotted screws are engineered to address common industrial challenges, such as corrosion in electrical components, plumbing systems, and marine applications. The brass material naturally resists rust and oxidation, extending service life in humid or corrosive settings. With a coarse UNC thread and Class 2A fit, they provide reliable fastening in soft materials like wood or plastic, reducing the risk of stripping. The slotted drive allows for straightforward installation with standard tools, while the flat head profile ensures a smooth, unobtrusive finish in countersunk holes. Ideal for precision assemblies in electronics, automotive, and machinery, these screws deliver consistent performance, minimizing maintenance and downtime.
Specification Summary & Compliance
This product features precise Class 2A thread fit and adheres to UNC coarse thread standards for consistent dimensional accuracy. Manufactured in compliance with ASME B18.6.3 specifications, it ensures reliable performance in industrial applications. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental safety and restricted substance compliance.
