S-94674A550 4-40 Press-Fit Nuts
Press-Fit Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Flange Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
Other Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh industrial environments.
- Quick, tool-free installation via press-fit hex flange design, reducing assembly time and labor costs.
- Reliable thread engagement with Class 2B UNC coarse threads, ensuring consistent fastening and vibration resistance.
- Enhanced panel retention with a 0.03" thick hex flange, distributing load evenly and preventing pull-through in 0.125" minimum thickness panels.
- Streamlined procurement by matching standard No. 20 drill bit (0.161" diameter), eliminating guesswork and rework.
- Compliance with global standards including REACH and RoHS 3, meeting stringent environmental and safety regulations.
- Right-hand thread orientation for intuitive installation in standard assembly processes.
Professional Applications & Engineering Value
This 4-40 UNC press-fit nut in 18-8 stainless steel addresses common assembly challenges in electronics enclosures, control panels, and lightweight machinery. The hex flange press-fit design eliminates the need for welding or adhesives, providing a secure, permanent thread in thin materials prone to stripping. Its coarse UNC thread and Class 2B thread fit ensure rapid alignment and robust performance under vibration, reducing maintenance downtime. Ideal for high-volume production, the nut’s compatibility with a standard No. 20 drill bit (0.161" diameter) streamlines panel preparation, while the stainless steel material resists oxidation in humid or corrosive settings, extending service life in industrial applications.
Specification Summary & Compliance
This press-fit nut features a 4-40 UNC coarse thread with Class 2B thread fit for consistent dimensional accuracy. The hex flange measures 3/16" in width and 0.03" in thickness, engineered for panels with a minimum 0.125" thickness using a No. 20 drill bit (0.161" diameter). It complies with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) directives, ensuring adherence to environmental and safety standards for industrial fastener applications.
