CAPTIVE NUTS PANEL PACK

Captive nuts are specialized fasteners designed to remain permanently or semi-permanently attached to a structure, typically sheet metal, even when a mating bolt is removed. They are primarily used in blind locations or where space is too tight to hold a standard nut with a tool.

Captive nuts and speed nuts are both fasteners designed to simplify assembly—particularly in "blind" locations where you cannot reach behind a panel—but they differ primarily in construction, strength, and how they secure a screw. 
A captive nut is a general term for any nut held in place by a cage, clip, or housing, while a speed nut (often a specific type of U-shaped captive nut) is a lighter-duty, stamped spring-steel fastener that cuts its own threads. 
Here is the detailed breakdown of the differences:

1. Structure and Design
Captive Nut (Cage Nut): Usually consists of a high-strength, multi-threaded nut housed inside a spring steel cage. The cage has wings that compress to fit into a square hole and snap into place.


2. Thread Type and Strength
Captive Nut: Uses standard machine screw threads. They are stronger and less likely to strip, making them ideal for heavy machinery or equipment racks.


3. Installation and Usage
Captive Nut: Ideal for pre-threaded holes that might be ruined by over-tightening; if a captive nut is damaged, it can be replaced, whereas a stripped hole cannot. They allow for minor adjustments during installation.