S-96439A120 4-40 Press-Fit Nuts

Key Features & Benefits at a Glance

• Superior retention in thin panels with a minimum panel thickness of 0.04", ideal for lightweight and compact assemblies.
• Durable 18-8 stainless steel construction offers excellent corrosion resistance and long-term reliability in harsh environments.
• Effortless installation with a round head design that simplifies the press-fit process, reducing assembly time and labor costs.
• Secure coarse UNC threading (4-40) with a Class 2B fit ensures reliable, vibration-resistant connections in right-hand applications.
• Precision compatibility with a standard No. 19 drill bit (0.166" diameter) for accurate, hassle-free hole preparation.
• Environmental compliance with RoHS 3 standards, making it safe for use in regulated industries and electronics.
• Consistent performance in inch-system designs, providing seamless integration with existing tooling and specifications.

Professional Applications & Engineering Value

This 4-40 UNC press fit nut is engineered to address common challenges in thin-panel fastening, such as loosening under vibration and limited space. Made from 18-8 stainless steel, it resists rust and wear, ensuring longevity in industrial, electronics, and automotive applications. The round head and press-fit design enable quick, tool-free installation, reducing assembly errors and costs. With a Class 2B thread fit and coarse threading, it maintains tight tolerances for secure connections in right-hand thread systems, ideal for high-stress environments where reliability is critical. Its compatibility with a 0.04" minimum panel thickness makes it a go-to solution for lightweight enclosures and chassis.

Specification Summary & Compliance

This press-fit nut adheres to UNC coarse thread standards with a Class 2B thread fit for precise dimensional accuracy. It meets RoHS 3 (2015/863/EU) compliance, ensuring it is free from hazardous substances. Manufactured to inch-system specifications, it includes a head height of 0.07" and head OD of 0.25", with thread size 4-40 and right-hand direction. Designed for use with a No. 19 drill bit (0.166" diameter), it supports consistent performance in panel thicknesses from 0.04" upward.