Where Is Each Snap Fastener Used? The Real Differences Between VT2, 54 System, and Alfa 61 Snaps

Choosing a snap fastener is often done by looking only at size. In reality, the correct choice is not based on diameter or cap size, but on fabric thickness and how the product will be used.

Because the same systems are sold under different names in the market, customers frequently get confused. Some sellers rename products to create the impression that a “special” system exists only with them. In fact, snap systems are standardized—and each system has clear, correct use cases.

The first thing to check when choosing a snap: fabric thickness

The most important rule in snap selection is:

• Thin product → small system
• Medium thickness → 54 system
• Thick fabric → 61 system

If you choose the wrong snap:

• The fabric may tear
• The snap may pop open by itself
• The product may look low quality
• Product lifespan becomes shorter

If you choose the right snap:

• Opens and closes smoothly
• Does not damage the fabric
• Makes the product look more professional

What Is a VT2 (54 Small System) Snap?

VT2 is a small snap system commonly used for thin work and small products. Thanks to its compact structure, it looks more elegant and does not appear bulky on small items.

Typical use cases

• Wallets and leather accessories
• Keychain production
• Knife safety straps / closures
• Outerwear for ages 0–7
• Small accessory products

Recommended cap sizes

• 9 mm
• 10 mm
• 12.5 mm

Important installation tip: It is recommended to punch a hole where the snap will be installed. This prevents the cap post from forcing the material, lets the socket sit properly, and improves the open/close feel. This is especially recommended for leather products.

If you would like to see the products, please click on the link: VT2 / Small System Snaps

What Is a Klikit / Pronged Snap Used in Baby Clothing?

Snaps used for babywear are different from metal spring systems. The key advantage of Klikit (pronged) snaps is that they grip via multiple prongs rather than relying on a single post. This structure adapts better to stretchy knit fabrics, reduces the risk of tearing, and provides a softer open/close action.

Why is it preferred for baby products?

• Baby garments are opened/closed frequently
• Fabrics are thin and stretchy
• Hard closing snaps can tear delicate fabric

Things to watch out for

• Do not install with excessive hard удар / impact
• Interfacing (tela) or binding is recommended underneath
• Installing directly on fabric without support can cause tearing

Typical use cases

• Baby bodysuits
• Onesies
• Baby underwear / innerwear

If you would like to see the products, please click on the link: Baby Snaps / Pronged Snaps

What Is the 54 System (Standard Snap)?

The 54 system is the most widely used snap system on the market. Compared to VT2, it has a larger structure and closes with a medium firmness. This balance makes it ideal for everyday use products.

Typical use cases

• Sweatshirts
• Sportswear
• Kids’ clothing
• Lightweight bags
• Spring / light outerwear

Cap sizes

• 12.5 mm
• 15 mm
• 17 mm
• 19 mm
• 20 mm

Note: On very thick fabrics, the post may be too short. In that case, consider switching to the 61 system.

If you would like to see the products, please click on the link: 54 System Snaps

What Is the 61 System / Alfa 61 Snap?

61 system snaps are designed for thick fabrics and products requiring high durability. They are often referred to as “Alfa 61” in the market.

Key note: The “61 Alfa cap” and the “61 system cap” are the same. The difference is naming, not technical.

  

Typical use cases

• Coats
• Leather jackets
• Outdoor products
• Workwear

For bags, the 54 system is often sufficient. The 61 system is mainly for heavy outerwear and tough workwear applications.

If you would like to see the products, please click on the link: 61 System / Alfa 61 Snaps

Most Common Snap Fastener Mistakes

• Installing a 61 system snap on thin fabric
• Installing metal snaps on knit fabric without pre-punching
• Not using interfacing (tela)
• Choosing the wrong post length
• Installing with excessive hard impact

These mistakes can cause deformation, tearing, accidental opening, and a noticeable drop in perceived quality.

The Simplest Snap Selection Table

• Thin work / small product → VT2 (54 small system)
• Baby clothing → Klikit / pronged snap
• Everyday clothing → 54 system
• Thick coat / workwear → 61 system / Alfa 61

Choosing the right snap fastener is not just a technical detail—it directly impacts product lifespan and quality perception. Choose based on fabric thickness and intended use, not just measurements. If you are unsure, make your decision according to the fabric structure and thickness of your product.

Frequently Asked Questions

Which snap fastener does not tear fabric?

The snap that won’t tear fabric is the one chosen according to fabric type and thickness. Use VT2 for thin work, 54 system for everyday products, 61 system for thick fabrics, and Klikit (pronged) snaps for babywear and knit fabrics.

Where are VT2 (54 small system) snaps used?

VT2 snaps are used for wallets, keychains, knife safety closures, and outerwear for ages 0–7. Their smaller caps provide a cleaner, more elegant look on compact products.

Why are pronged (Klikit) snaps used for baby clothing?

Pronged snaps grip using multiple prongs, which helps them adapt to stretch in knit fabrics and reduces the risk of tearing. They also provide a softer open/close action.

Where is the 54 system snap used?

The 54 system is the most commonly used standard snap for sweatshirts, sportswear, kids’ clothing, lightweight bags, and spring outerwear.

What is the difference between 54 system and 61 system snaps?

The 54 system closes with medium firmness and suits everyday use. The 61 system closes harder, offers higher strength, and is preferred for thick fabrics such as coats and workwear.

Are Alfa 61 and 61 system the same?

Yes. “Alfa 61” is a market name. Technically, the Alfa 61 cap and the 61 system cap are the same.