4-40 zinc plated steel captive nuts,What are 4 - 40 Zinc Plated Steel Captive Nuts? 4 - 40 zinc plated steel captive nuts are really useful little component
What are 4 - 40 Zinc Plated Steel Captive Nuts?
4 - 40 zinc plated steel captive nuts are really useful little components in the world of mechanics and construction. A captive nut is a type of nut that is designed to be held in place, usually within a piece of equipment or a structure. The "4 - 40" refers to the size. In the United States, the "4" represents the diameter of the screw or bolt in a numbered sizing system, and the "40" refers to the number of threads per inch.
The zinc plating on these captive nuts is also important. Zinc plating is a process where a layer of zinc is applied to the surface of the steel nut. This serves multiple purposes. First of all, it provides a certain level of corrosion resistance. For example, if these nuts are used in outdoor equipment or in a damp environment like a basement, the zinc plating can help prevent rust from forming on the nut, which could otherwise weaken it over time.
Another advantage of the zinc plating is that it can give the nut a more finished look. In a lot of applications, especially in consumer products or in machinery that is visible, the shiny zinc - plated surface just looks better than a plain, un - plated steel nut.
Where are 4 - 40 Zinc Plated Steel Captive Nuts Used?
These 4 - 40 zinc plated steel captive nuts are used in a variety of applications. One common place you'll find them is in furniture assembly. For instance, in the construction of wooden desks or cabinets. Let's say you're putting together a desk. The captive nut can be inserted into a pre - drilled hole in the wood. Then, a 4 - 40 screw can be easily screwed into it to attach different parts of the desk together, like attaching the legs to the tabletop. Since the nut is captive, it won't fall out of its position while you're trying to insert the screw, which makes the assembly process much easier.
They are also used in the automotive industry. In a car, there are many small components that need to be fastened together. These captive nuts can be used in areas where access is a bit difficult. For example, inside the dashboard or under the hood. The fact that they are zinc - plated helps them withstand the various environmental conditions that a car is exposed to, such as rain, heat, and road salt.
Questions and Answers
Question: What is the significance of the "4 - 40" in 4 - 40 zinc plated steel captive nuts?Answer: The "4" represents the diameter of the screw or bolt in a numbered sizing system, and the "40" refers to the number of threads per inch.
Question: Why is zinc plating used on 4 - 40 zinc plated steel captive nuts?Answer: Zinc plating is used for two main reasons. First, it provides corrosion resistance, especially in damp or outdoor environments. Second, it gives the nut a more finished and better - looking appearance.
Below is,4-40 zinc plated steel captive nutspartial price list| Category | Market Price | Use Cases |
| 3 16 plate steel | 1029$/Ton | Storage, transportation |
| 316 stainless steel plate | 1041$/Ton | Building exterior walls, roofs |
| 1 4 inch stainless steel rod | 1062$/Ton | Stair handrails, walls |
| 1mm stainless steel sheet | 1098$/Ton | Train cars, ships |
