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2.5:1 Pitch Spiral Binding Coil - 100pk

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Item# SPCOIL251
  • Length: 12" Letter (or choose other length)
  • Pitch: 0.400 (2.5 Holes Per Inch)
  • Hole Pattern: 44 Hole
  • Quantity: 100 Per Box

ProductDescription

This heavy duty spiral coil is designed for use with a 2.5 to 1 pitch hole pattern (or 0.400 hole spacing). It can be used with a true 2.5:1 pitch hole pattern (mostly available for large industrial binding punches) or the more common 2:1 wire binding hole pattern for binding large sized books with coil. This special type of coil is only available in sizes greater than 23mm and it utilizes a more rigid filament to make the inserting process easier. 2.5:1 pitch coil is available in sizes from 23mm up to 50mm in diameter and in more than 45 colors. In the past, binding large documents with coil was a huge pain but using this coil it should be a whole lot easier.
Please Note that our 2.5:1 pitch coil is made to order, is non-returnable and can take an extra 1-2 business days to ship. If you need this product in a hurry please give us a call for options before ordering.

Product Details

  • Product Type: .400 Pitch Coil Binding Spines
  • Color: Choose Above (45 Choices Available)
  • Diameter: Choose Above (23mm-50mm Available)
  • Pitch: 0.400 (2.5 Holes Per Inch)
  • Length: 12" Letter (or choose other length)
  • Quantity: 100 Per Box
  • Part Number: SPCOIL251

Demonstration Video

Transcript : Welcome to MyBinding video. This is everything you need to know about spiral coil. First, there are sizes ranging from a 6mm diameter all the way to 50mm. The smallest size can hold up to 30 pages and the largest can hold up to 444. A great benefit to spiral coil is that the pages lay flat. Better yet, they fold nicely back to back and the choices of color is one of the largest in any type of binding. Standard size coil has a 4:1 pitch, which is compliant with its respected hole punches. The standard length of each coil is 12 inches. Coil should always be longer than the pages you're binding. ...

Coil Sizing Guide

Coil Diameter Fractional Equivalent (approx.) Maximum Thickness of Document including Covers Sheet Capacity (20# Bond)
6mm 1/4" 4mm - 5/32" 30
7mm 9/32" 5mm - 3/16" 42
8mm 5/16" 6mm - 7/32" 54
9mm 11/32" 7mm - 1/4" 65
10mm 3/8" 8mm - 5/16" 75
11mm 7/16" 9mm - 11/32" 85
12mm 15/32" 10mm - 3/8" 92
13mm 1/2" 11mm - 13/32" 105
14mm 9/16" 12mm - 7/16" 115
15mm 19/32" 13mm - 1/2" 125
16mm 5/8" 14mm - 17/32" 135
17mm 21/32" 15mm - 9/16" 142
18mm 11/16" 16mm - 5/8" 155
19mm 23/32" 17mm - 11/16" 160
20mm 3/4" 18mm - 23/32" 172
22mm 7/8" 20mm - 3/4" 190
23mm 15/16" 21mm - 27/32" 200
25mm 1" 22mm - 7/8" 220
28mm 1-1/8" 25mm - 1" 250
30mm 1-3/16" 27mm - 1 1/16" 270
32mm 1-1/4" 29mm - 1 1/8" 280
35mm 1-3/8" 32mm - 1 1/4" 310
38mm 1-1/2" 34mm - 1 5/16" 330
42mm 1-11/16" 38mm - 1 1/2" 350
45mm 1-3/4" 41mm - 1 5/8" 390
50mm 2" 46mm - 1 13/16" 440

Questions & Answers

Unfortunately, the largest spiral coil, (50 mm) would only hold up to about 440 sheets of 20lb paper. Screw posts would be an option for you https://www.mybinding.com/aluminum-screw-posts-100pk.html?sku=SO500ASP.

Answered by MyBinding.com
5 years ago
Thank you for the question. Unfortunately we do not carry a 2:1 plastic coil. The closest we would have is 2.5:1 pitch coil. It is a coil that is made to order. (link: https://www.mybinding.com/2-5-1-pitch-spiral-binding-coil-100pk.html ) In Googling your machine it looks like it is designed to use a proprietary coil from the manufacturer.

Answered by MyBinding
9 years and 7 months ago ago