Understanding Staple Series: What Do the Numbers Mean?
Ever wondered why staples come in different series numbers and what they actually signify? The truth is, these numbers don’t follow a universal system, they’re simply reference codes created by manufacturers to categorise staple types. While they don’t necessarily indicate size in a structured way, they do help differentiate between staple types and applications.
For example, an 80 series staple is larger than a 71 series. Both are commonly used for upholstery, but they’re available in different leg lengths, so the best choice depends on what you’re stapling. Fine fabrics often benefit from the slightly wider 80 series, which is less likely to tear delicate materials. However, if you’re attaching fabric to very thin materials, such as trimming car door cards, the shorter 3mm leg of the 71 series is ideal.
To make sense of which staple suits your job, it’s worth looking at the parts that make each one different; the crown, the wire, and the leg length.
What is a Crown in Staples?
The ‘crown’ of a staple is the bridge that connects its two legs. This dimension plays a crucial role in determining the staple’s application, whether it’s upholstery, flooring, or packaging.
What Kind of Wire is each Staple Made From?
Staple performance isn’t just about size, the shape and material of the wire are equally important. Different wire profiles are designed for specific applications.
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Fine wire staples (18 gauge) are delicate, making them ideal for upholstery because they are less likely to tear fabric.
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Flat wire staples distribute pressure over a larger area, reducing the risk of damaging soft materials, and are commonly used in heavy-duty furniture and packaging.
Staples also come in a variety of finishes, including galvanised, stainless steel (for better rust resistance, read here for more on this) , and coloured options, giving even more choice for your project needs.
Choosing the Right Staple for the Job
Staples come in different finishes, leg lengths, and crown widths, making it essential to select the right type for your specific task. Below is a quick reference guide to staple series, their characteristics, and their common uses.
Staple Size Guide |
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Series |
Available Finishes |
Leg Length |
Crown Width |
Application |
13 series |
Galvanised |
4-14 mm |
10.65 mm |
Fine Wire Upholstery |
14 series |
Galvanised |
19-50 mm |
10.7 mm |
Heavy Duty/Furniture |
17 series |
Galvanised |
19-38 mm |
26.5 mm |
Wide Crown/Packaging |
32 series |
Copper |
15-22 mm |
32 mm |
Wide Crown/Packaging |
35 series |
Copper |
15-22 mm |
35 mm |
Wide Crown/Packaging |
50 series |
Galvanised |
4-16 mm |
12 mm |
Fine Wire Upholstery |
53 series |
Galvanised |
6-16 mm |
11.35 mm |
Fine Wire Upholstery |
71 series |
Galvanised, Stainless Steel, Beige, Black |
3-16 mm |
9 mm |
Fine Wire Upholstery |
80 series |
Galvanised, Stainless Steel |
4-16 mm |
12.8 mm |
Fine Wire Upholstery |
90 series |
Galvanised, Divergent Point, Stainless Steel |
15-40 mm |
5.8 mm |
Narrow Crown/Flooring |
91 series |
Galvanised, Stainless Steel |
18-30 mm |
5.95 mm |
Narrow Crown/Flooring |
97 series |
Galvanised |
6-25 mm |
4.5 mm |
Narrow Crown/Flooring |
140 series |
Galvanised, Stainless Steel |
6-14 mm |
10.6 mm |
Fine Wire Upholstery |
4000 series |
Galvanised, Divergent Point |
6-25 mm |
4.8 mm |
Narrow Crown/Flooring |
Still Unsure? We Can Help!
If you’re uncertain about which staple is best for your project, we’re happy to assist. Selecting the right staple ensures a secure and professional finish, so don’t hesitate to reach out for expert guidance!