S-94648A320 4-40 Press-Fit Nuts
Press-Fit Nuts
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Basic Information
Thread Parameters
Head Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
Other Parameters
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Key Features & Benefits at a Glance
- Superior retention in thin panels with a minimum panel thickness of 0.06", ensuring reliable performance in lightweight assemblies.
- Excellent corrosion resistance thanks to 18-8 stainless steel construction, ideal for harsh or humid environments.
- Easy and secure installation using a standard No. 19 drill bit, reducing assembly time and tooling costs.
- Consistent thread engagement with UNC coarse threads and Class 2B fit, providing reliable fastening and vibration resistance.
- RoHS 3 compliance ensures environmental safety and meets global regulatory standards for hazardous substances.
- Durable round head design with 0.22" OD and 0.07" height, offering a low-profile and robust finish.
- Right-hand thread direction for standard assembly processes, enhancing compatibility and ease of use.
Professional Applications & Engineering Value
This 4-40 UNC press-fit nut is engineered to address common challenges in thin-panel applications, such as electronic enclosures, chassis, and lightweight machinery. Made from 18-8 stainless steel, it provides exceptional corrosion resistance, reducing maintenance costs and extending service life in demanding conditions. The press-fit design ensures maximum retention without additional hardware, simplifying assembly and minimizing the risk of loosening under vibration. With a Class 2B thread fit and coarse thread spacing, it offers reliable performance in high-stress environments, making it a go-to solution for B2B sectors like aerospace, telecommunications, and industrial equipment where precision and durability are critical.
Specification Summary & Compliance
This press-fit nut adheres to UNC thread standards with a Class 2B thread fit for precise dimensional accuracy. It is manufactured to meet RoHS 3 (2015/863/EU) compliance, ensuring it is free from hazardous substances. Specifications include a thread size of 4-40, right-hand thread direction, and compatibility with a No. 19 drill bit (0.166" diameter) for installation in panels with a minimum thickness of 0.06".
