S-98625A980 1/4"-80 Thumb Screws

Key Features & Benefits at a Glance

• Superior holding power in plastics with 50,000 psi tensile strength brass construction, preventing pull-out under load.
• Vibration-resistant performance due to the ultra-fine 1/4"-80 thread spacing and Class 3B fit, ensuring long-term thread integrity.
• Easy, secure press-fit installation designed for 5/16" drilled holes in plastic, minimizing assembly time and tooling costs.
• Corrosion-resistant brass material enhances durability in various industrial environments without galling or seizing.
• Open end design allows for through-bolt passage and simplifies cleaning in applications requiring fluid or debris clearance.
• RoHS 3 compliance with exemption for copper alloys, meeting international environmental and safety standards for industrial components.
• Optimized for thin plastic sections with a 0.735" body length, providing reliable threading in materials as thin as the minimum specified thickness.

Professional Applications & Engineering Value

This brass press fit threaded insert is engineered to solve common fastening challenges in plastic applications, where traditional threading often fails due to material softness or vibration. The ultra-fine 1/4"-80 UNS thread and Class 3B fit create a precise, tight engagement that distributes stress evenly, reducing the risk of stripping or loosening in high-cycle environments. Its press-fit design allows for quick installation into pre-drilled 5/16" holes, making it ideal for assembly lines in electronics enclosures, automotive plastic components, and consumer goods. The brass construction offers excellent corrosion resistance and non-magnetic properties, while the open end facilitates versatile mounting options. By providing a durable, reusable thread in plastics, this insert extends product lifespan and maintenance intervals, delivering consistent performance in demanding industrial use scenarios.

Specification Summary & Compliance

This insert features a 1/4"-80 UNS ultra-fine thread with Class 3B fit for high precision and minimal backlash. Dimensions include a body length of 0.735", flange diameter of 0.352", and compatibility with a 5/16" drill bit size for maximum hole diameter. It adheres to RoHS 3 (2015/863/EU) compliance under exemption 6(c) for lead in copper alloys, ensuring environmental regulatory alignment. The right-hand thread direction and open end type support standard assembly practices, with tensile strength rated at 50,000 psi for reliable performance in plastic substrates.