Size 20 Glossy

Random Mismatched Colors (1000 Sets) *FINAL SALE*

Size Guide
Choosing the Right Plastic Snap Size

Snaps are not one-size-fits-all.  If your snaps are too long for your fabric, they won't close properly.  If they're too short, they'll fall off. For this reason, it's important to choose the proper size / length for your material.

Which size works best for you will depend on a number of variables, such as the fabric you are using, its density and compression levels, how hard you are able to press, and your own personal preference.  For these reasons, we are unable to provide specific size recommendations for every scenario. 

------>>>>>> Download a printable pdf file showing each snap in its true-to-life size.

Plastic KAM Snaps Fasteners Size Comparison Chart - What Size Snaps Do I Have?


Dimensions of Size 20 Snap Parts


The 3 most commonly used sizes, in the order of popularity, are:

    1. Size 20 regular length
    2. Size 20 extra long (for thicker material)
    3. Size 16 regular length (for thinner material)

Size 20 (12.4mm or 1/2" cap diameter)

  • Size 20 Regular Length (5.6mm prong) is often used for lightweight to mid-weight fabric that isn't prone to tearing including baby diapers, menstrual pads, bibs, regular clothing, and household projects.   This is the most popular size of plastic snaps and is a good size to start with for most projects since most commonly used fabric fall within the desired thickness for this length. This size has a strong grip so if you're working with more delicate fabric at risk of tearing, consider size 16.

    ------>>>>>> Click here for sizing tips for baby & toddler clothing.
  • Size 20 Extra Long (6.2mm prong) is recommended for slightly thicker & denser material like double layers of standard marine vinyl for key fobs, medium weight leather, and chinese prefold diapers. (Some versions of these material may be so thick that they'll need larger/longer snaps.)

Size 16 (10.7mm or 7/16" cap diameter)

  • Size 16 Regular Length (4.6mm prong) is most commonly used for  projects that require a looser grip, such as doll clothes or reinforced stretch jersey.
  • Size 16 Extra Long is available in lengths ranging from 5.2mm - 7.2mm long for thicker material.

Size 22 (14.1mm or 9/16" cap diameter, 7.0mm prong)

  • A larger snap which can be used in similar situations as size 20 long-prong, or in situations where size 20 long-prong is still a little too short.

Size 24 (14.8mm or 9/16" cap diameter, 7.5mm prong)

  • Our largest, strongest snap which should only be used in very heavy duty applications with thicker material such as canvas tote bags, nylon webbing, dense leather and thick jackets. Because the grip is so strong, it can tear through more commonly used fabric.


Size 20 (1/2") regular length. 

Each bag contains 1000 identical pieces.  You will receive 2 bags of caps, 1 bag of females, and 1 bag of males, for a total of 1000 complete sets.  All bags may be the same color, or each bag a different color, or any combination in between.

These are ideal for Days for Girls shields. Order these only if color is not important and you can use whatever we send you.
  • Snaps are generally packed 1000 pieces in a single color per part. You will *not* receive a bunch of different colors.
  • You may receive large quantities of a single color (ex: lots of brown).
  • Each part or some parts may be a different color (ex: brown caps, blue sockets, purple studs).
  • You may receive colors you don't like.
  • Colors are *not* labeled.
  • Caps, males and sockets are all individually packaged (not mixed together). 





Customer Reviews

Based on 24 reviews
Rowena Pedersen
Plastic snaps

Love the price

Diane Benoit
craft snaps

I have ordered twice this assortment and loved it both times. I mismatch them for the children's toys that I make. They are wonderful

Jenn A

I bought these back when I decided I'd start using snaps in my sewing and knitting, and assumed I'd mess up a lot so I'd needed "practice" ones. These came in lovely colors and they have not only helped me learn how to snap with no issue what so ever, when I've had to fix things, or crafting things at random I'm able to dip into these.
Some projects I've used these for - fixing my daughter's backpack. making her PJs that snap in back. Possibly going to make one of those snapazoos... and more. When the project calls for snaps are you aren't picky about the color this deal is the way to go. I will definitely order another batch in the future (once i figure out how to store them all)


The colors truly didnt matter when I ordered these. Regardless I got a great mix of colors and a ton of them for a great price! They are sturdy and amazing! I love love love kam snaps! Won't ever order anywhere else. Durable and amazing. The suspense of what colors you'll get is fun too 💛💛💛


Perfect!! I'm using these to make diapers and cloth pads to send to Haiti so the colors do not matter as long as the quality is good I will defiantly be ordering these again

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