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6mm long Chicago Screws.

Includes both Male and Female parts. 

Black Oxide.
Black oxide is unlike any other finish. No other process produces the same finish and combination of properties.

No dimensional changes: The as-formed dimensions do not change (as they do when plated or painted). Black oxide is a coloring of the base metal, no metal is removed or deposited.
 
Dark black color: (No patina or rainbow effect) The surface of the part may be shiny or matte depending on the surface of the part and the after finish applied. For example, a polished surface will retain its luster after black oxidizing.
 
The finish will not chip, peel, flake, or rub off: Black oxide can only be removed by mechanically or chemically removing the finish itself.
 
Reduces light glare (reflection): Black oxide makes an excellent finished surface for moving parts such as hand tools and machine parts. The reduction in reflectivity reduces eye fatigue and is less distracting.
 
Can be coated for additional protection: Black oxide finishes with supplementary treatments ("after-finishes") improve the appearance, abrasion resistance, and corrosion resistance of the part to which they are applied. The normal after-finishes are Oil, Wax, Lacquer, and Chromic Seals. The part configuration and the end-use will help to determine which after-finish to specify.
 
Improved lubrication characteristics: Black oxidized parts have improved lubricity and anti-galling characteristics due to the after-finish (oil or wax) resulting in smoother running, mating parts.
 

Color change resistant to temperature: Black oxide finishes can be exposed to a temperature of  900 degrees F. (482 degrees C.) before the color begins to change.
 
No hydrogen embrittlement: The black oxide process does not require an acid activation nor is it an electro-process; therefore, hydrogen embrittlement is not a factor. If the parts are scaled or rusty and an acid pickle is required, any hydrogen that may have evolved will quickly dissipate in the black oxide tank (running temp. 285 degrees F). Any remaining hydrogen will be completely dissipated within 48 hours after processing.
 
No white corrosion: The finished part does not have a "white-corrosion" state as some electro-plated parts exhibit over time. This makes black oxide an excellent finish for parts used internally on electronic components. The small white corrosive flecks are conductive and may cause an electrical short.
 
Weldable: Welding black oxided parts does not produce noxious fumes nor hamper the ease with which a part can be welded as may be encountered by welding plated or painted parts.


Chicago screws, also known as screw posts, screw binders, or bookbinding screws, are a type of fastener commonly used in various applications. They consist of two threaded screw-like components that can be easily assembled and disassembled by hand, without the need for any tools. The components typically include a male screw (with a threaded post) and a female screw (with a threaded receptacle).

Here are some common uses and applications of Chicago screws:

Bookbinding: Chicago screws are frequently used in bookbinding and leatherworking to create binders and portfolios. They allow for the easy removal and replacement of pages, making it convenient to update or rearrange the contents of a book.

Sample Books and Swatch Books: In industries such as textiles, flooring, or printing, Chicago screws are often used to create sample books or swatch books. This allows for the easy organization and display of various samples that can be updated or replaced as needed.

Scrapbooking: DIY enthusiasts and scrapbookers use Chicago screws to bind and organize their scrapbook pages. This allows for flexibility in rearranging and adding new elements to the scrapbook.

Menu Covers: In the restaurant and hospitality industry, Chicago screws are employed in menu covers. This makes it simple to update menus by adding or removing pages without having to replace the entire menu cover.

Leathercraft: Leatherworkers use Chicago screws to attach straps, belt loops, or other components in leather projects. The screws provide a secure connection while allowing for easy disassembly if adjustments are needed.

DIY Projects: Chicago screws are popular in various DIY projects where a temporary or adjustable connection is required. They are versatile and can be used in a wide range of creative applications.

Photography Portfolios: Photographers often use Chicago screws to create customizable and easily updatable portfolios. This allows them to showcase their work professionally and make changes as needed.

Overall, Chicago screws offer a practical and versatile solution when a temporary, adjustable, or easily replaceable fastening method is required. They provide a balance between stability and flexibility, making them suitable for a variety of applications across different industries.

 

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