4-1/2" Aluminum Screw Posts in Black (20 Sets)

Your Price: $40.89


These posts are manufactured the same as our Aluminum screw posts, then a hard anodize coating is added to produce a black color. These posts are ideal for uses where an enhanced appearance is desirable, yet the strength of aluminum posts is required. The posts are open on the bottom and threaded all the way through, as in the picture to the right. This allows the screws to thread all of the way through the post, giving them greater strength.

The post length is 4 1/2" and the diameter is 3/16". The post length is the maximum binding thickness (inside length.) We recommend that you measure your document to obtain the best fit. We also recommend that you punch or drill a 1/4" hole in your documents to accept these posts.

If you would like to have a different appearance, you might want to look at our plastic screw posts. If you need greater strength to hold large or heavy materials, please consider our steel screw posts.


  • Posts are 3/16" diameter.
  • Post and screw heads are 7/16" diameter and 1/16" thick. The screw thread is #8-32.
  • 3/8" long screws are furnished with all posts.
  • Quantity per package is 20 for these aluminum screw posts. We can supply larger quantities on request. Please call for a quote on orders of 30 or more packages.
  • These screw posts can be extended using our 1/4", 1/2", 3/4", and 1" screw post extensions.



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