TruBind 6mm (1/4 in.) 4:1 Pitch 12 in. Binding Coils (100/bx)
TruBind 6mm (1/4 in.) 4:1 Pitch 12 in. Binding Coils (100/bx) - Black is backordered and will ship as soon as it is back in stock.
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Spiral coil binding offers both a professional, finished look to documents and a "lay-flat" design with the ability to flip pages 360° from front to back. Plastic coils such as these Premium 4:1 Pitch 12 in. book binding coils are an excellent high-quality choice for business proposals, annual reports, company presentations, restaurant menus and more!
All Premium plastic spiral binding coils have a 4:1 pitch (4 holes per inch) and are fully compatible with any matching 4:1 pitch coil binding machine; models include brands such as Akiles, USI, GBC, Ibico, NSC, Tamerica, Fellowes, Rhin-O-Tuff, Renz, and HIC.
These book binding coils are available in a 12 in. length and are designed to be used with Letter size documents, leaving excess on either edge to allow for crimping the ends shut with pliers. (We do have select diameters available in 36 in. lengths here on our website for books with spines more than 11 in. long.) These plastic spiral binding coils can easily be cut to accommodate books with spines smaller than 11 in. long and can then be used with a binding machine equipped with disengaging pins.
TruBind 6mm (1/4 in.) 4:1 Pitch 12 in. Binding Coils (100/bx)
Product Specifications
Product Specifications
What coil size do I need?
What coil size do I need?
The exact diameter needed for your document varies based upon the thickness of the inner sheets of paper as well as the covers. Below is a chart that provides recommendations based on both the number of pages (using regular 20# bond) and the thickness of the stack being bound.
| Pages | Thickness | Coil Size |
|---|---|---|
| 30 | 3/16" | 6mm (1/4") |
| 42 | 1/4" | 7mm (9/32") |
| 54 | 9/32" | 8mm (5/16") |
| 65 | 5/16" | 9mm (11/32") |
| 75 | 11/32" | 10mm (3/8") |
| 85 | 3/8" | 11mm (7/16") |
| 92 | 7/16" | 12mm (15/32") |
| 105 | 15/32" | 13mm (1/2") |
| 115 | 1/2" | 14mm (9/16") |
| 125 | 9/16" | 15mm (19/32") |
| 135 | 19/32" | 16mm (5/8") |
| 142 | 5/8" | 17mm (21/32") |
| 155 | 21/32" | 18mm (11/16") |
| 160 | 11/16" | 19mm (23/32") |
| 172 | 23/32" | 20mm (3/4") |
| 190 | 3/4" | 22mm (7/8") |
| 200 | 7/8" | 23mm (15/16") |
| 220 | 15/16" | 25mm (1") |
| 250 | 1" | 28mm (1-1/8") |
| 270 | 1-1/8" | 30mm (1-3/16") |
| 280 | 1-3/16" | 32mm (1-1/4") |
| 290 | 1-1/4" | 33mm (1-5/16") |
| 310 | 1-5/16" | 35mm (1-3/8") |
| 330 | 1-3/8" | 38mm (1-1/2") |
| 350 | 1-1/2" | 40mm (1-9/16") |
| 390 | 1-9/16" | 45mm (1-3/4") |
| 440 | 1-3/4" | 50mm (2") |
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