The diameter of these posts is 3/16" and they are designed for use with a 1/4" hole that can be either punched or drilled into your documents to accept these posts.
The heads of the posts and the screws are 7/16" in diameter to ensure a good fit with 1/4" holes.
Check out these 7/8" removable aluminum fasteners often used for photo albums, swatch books, architectural and engineering drawings, menus, and many other applications where loose sheets need to be kept together. These 7/8" aluminum screw binding posts are sometimes called Chicago screws or Chicago screwposts, and they consist of two pieces (screw and post) that are designed to be inserted into round hole punched papers and covers. Measuring 7/8" in length, these screwposts should be used to bind documents of the same 7/8" thickness in order to acheive maximum strength. Screwposts are perfect for binding large documents and can even be combined with screwpost extensions to reach any length you might need. These particular 7/8" screwposts are designated with the product number SO078ASP.
Product Details
The diameter of these posts is 3/16" and they are designed for use with a 1/4" hole that can be either punched or drilled into your documents to accept these posts.
The post length for these screw posts is 7/8". This means that the maximum binding thickness for these screw posts is 7/8". For best results and to ensure a correct fit, please measure your document thickness and ensure that it will fit.
The heads of the posts and the screws are 7/16" in diameter to ensure a good fit with 1/4" holes.
These aluminum screw posts are packaged 100 Per Box
Part Number: SO078ASP
Demonstration Video
Everything There Is To Know About Screw Posts Video
Transcript :
Welcome to MyBinding video. This is everything you need to know about Screw Posts. When using screw posts, there is no support to keep your pages straight, so we recommend using a thicker cover to help it from bending easily. They can be good for binding other materials, such as leather, which is thick and can't be used in a punch machine. You can find sizes of posts ranging from 1/8" to 5" and we offer aluminum posts, brass posts, black, gold, white plastic and black plastic. There are also extensions so you can use your smaller posts on the occasional larger project. They are made to fit int ...
Welcome to MyBinding video. This is everything you need to know about Screw Posts. When using screw posts, there is no support to keep your pages straight, so we recommend using a thicker cover to help it from bending easily. They can be good for binding other materials, such as leather, which is thick and can't be used in a punch machine. You can find sizes of posts ranging from 1/8" to 5" and we offer aluminum posts, brass posts, black, gold, white plastic and black plastic. There are also extensions so you can use your smaller posts on the occasional larger project. They are made to fit into holes of 3 and 2-hole punch patterns. And those are screw posts. For more demos, reviews and how-to's, go to MyBinding.com.
Unfortunately, the screw post heads are less than 1/2" in diameter, and they have a flat screw end, not pointed. Unfortunately, the is the only style we offer.
That's a good question! For the 5/8" (any size) screw post the minimum is 5/8", but the screw can be losened up to about 6/8". Then you'll run into how lose you want your project. In that case, I would suggest looking into screw post extensions: https://www.mybinding.com/aluminum-screw-post-extensions-100pk.html
Screw posts can be flush with the paper that it binds. So that means it can hold from 180 to 220 sheets depending on how thick the paper is you are using. This is a rough estimate. We can always send samples if you want to test before you place your order.
Thank you for your question. It would depend on the thickness/weight of the paper you are using. For standard 20# copier a 3/4" screwpost should work. In general the best way to "fit" a screw post to the document is to measure the thickness of your document and buy a screwpost that matches that thickness. This "trick" doesn't work with other binding styles but it does with screwposts.
