12.5 mm / 0.49 in Optic White Plastic Cap Snap Fastener Set, 54 System, 100 Sets ERC00125PLOBeyaz

This 12.5 mm / 0.49 in optic white plastic cap snap fastener set is designed for garments that need a lightweight, tidy, and easy-to-use closure. It is a 54 System S-spring snap with one visible plastic cap and three stainless silver lower parts that create the working closure.

The optic white cap is a strong fit for baby clothing, children’s apparel, medical uniforms, shirts, bodysuits, rompers, sleepwear, and light spring garments. It gives pale fabrics a consistent look and can also be used as a purposeful contrast on dark fabric colors.

Best Applications for This Snap Fastener

This size works best on light and medium-weight textile products where the closure should remain functional without creating an oversized hardware detail. It is useful for bodysuit openings, babywear, children’s clothing, shirts, aprons, nurse or doctor uniforms, lightweight workwear, and similar sewn products.

For thick outerwear, dense multilayer construction, or closure points exposed to significant pulling force, review the garment structure before selecting the snap. A larger closure size or another fastening solution may be more suitable for those applications.

Why Choose a Plastic Cap Snap?

Plastic cap snaps are useful when the finished garment needs a softer and more color-coordinated appearance than a fully metal snap can provide. The cap remains visible on the garment surface, while the stainless lower parts handle the mechanical snap connection.

This product uses an optic white cap with silver lower components. It is a practical combination for brands working with white, cream, pastel, pale gray, light blue, or medical-textile color palettes.

54 System Construction

This is a 54 System S-spring snap fastener. One complete snap contains four components: the plastic cap, socket, stud, and post. The snap should be installed only with compatible 54 System parts and the correct setting die.

Using different snap systems or mismatched lower components can affect closure strength and alignment. Keep the components from the same system together throughout sampling and production.

Installation Instructions

For a consistent installation, use the matching 12.5 mm / 0.49 in plastic cap 54 System snap setting die. The correct die supports the cap during pressing, helps keep the lower components centered, and reduces the risk of visible pressure marks or cap damage.

The snap can be applied with hand-setting equipment, a manual press, an impact press, an electric machine, or a pneumatic machine when the correct die connection is selected. For workshop applications, the M0099 hand press fastening machine offers a practical base for compatible snap dies and other garment-accessory applications.

Before full production, test the installation on the actual fabric. Check the closure feel, cap alignment, reverse-side appearance, and holding performance. Thin knit, stretch, or loosely woven fabrics may require an appropriate stabilizer or backing layer.

Technical Details

• Snap size: 12.5 mm / 0.49 in
• Ligne size: 20L
• System: 54 System, S-spring
• Visible cap: Optic white plastic
• Lower components: Stainless silver metal
• Complete set: Cap, socket, stud, and post
• Pack quantity: 100 complete snap sets

Care and Use Conditions

The stainless lower components are intended for standard apparel use and regular washing conditions. When the finished product will experience prolonged saltwater, chlorine, strong chemical exposure, or marine use, test the complete garment before moving into large-scale production.

The 100-set pack is suitable for prototype development, small collections, garment alterations, sampling, and production styles that use the same closure across multiple units.

Frequently Asked Questions

Does one pack contain 100 individual pieces or 100 complete sets?

The pack contains 100 complete snap fastener sets. Each set has one plastic cap and three stainless lower components.

What is the difference between 12.5 mm and 20L?

They refer to the same product size using two different measurement systems. The snap diameter is 12.5 mm / 0.49 in, commonly identified as 20L.

Can I use these snaps for baby bodysuits and rompers?

Yes. This size is well suited to bodysuits, rompers, babywear, children’s clothing, and other lightweight garment applications.

Are the lower parts stainless steel?

Yes. The three silver lower components are stainless metal parts, while the visible cap is plastic.

Is a setting die included in the pack?

No. Select the matching 12.5 mm / 0.49 in plastic cap 54 System snap setting die separately according to your press or installation equipment.

Will this snap work for saltwater or swimwear use?

It is suitable for standard textile use. For swimwear, marine garments, or products with repeated saltwater or chlorine exposure, test the finished item under real use conditions before production.