S-97715A437 4-48 x 1/4" Brass Button Head Hex-Drive Screws
Brass 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 brass construction, ideal for harsh environments and electrical applications where rust prevention is critical
- Exceptional thread engagement and vibration resistance due to Class 3A precision fit and UNF fine threading, ensuring reliable, long-term fastening
- High mechanical strength with a 50,000 psi tensile strength and Rockwell B55 hardness, providing durability under significant load and stress
- Easy and secure installation with a hex drive (1/16") and rounded button head, allowing for high torque application and a low-profile, finished appearance
- Maximum grip and holding power from the fully threaded design, distributing clamp force evenly along the entire 1/4" length
- Guaranteed material safety and compliance, meeting RoHS 3 and REACH regulations for use in regulated industries and global markets
Professional Applications & Engineering Value
This 4-48 UNF brass screw is engineered to solve critical challenges in precision assembly. The brass material inherently resists corrosion and is non-magnetic, making it indispensable in electrical enclosures, marine hardware, and instrumentation. The fine thread and Class 3A fit provide a tighter tolerance than standard fits, drastically reducing the risk of loosening from vibration—a common failure point in machinery and automotive subsystems. The combination of high tensile strength and the rounded button head design ensures a secure, flush mount that withstands operational stresses without compromising the assembly's aesthetic or functional integrity. It is a reliable precision fastener for applications demanding repeatable, high-performance results.
Specification Summary & Compliance
This screw conforms to the UNF (Unified National Fine) thread standard with a 4-48 thread size and a precision Class 3A thread fit. Key dimensional specifications include a 1/4" length, 0.213" head diameter, and 1/16" hex drive. The product is manufactured to meet material regulations, confirmed as RoHS 3 (2015/863/EU) compliant under exemption 6(c) and REACH (EC 1907/2006) compliant.
