12 mm (0.47 in) 54-System Sheet-Metal Snap Fastener – Special Finish SB 1877

12 mm (0.47 in) 54-System Sheet-Metal Snap Fasteners

These specially finished 12 mm (0.47 in) 54-system sheet-metal snaps are four-part fasteners for garments, bags and compatible leather or textile accessories. A slightly domed cap provides a neat, visible metal accent, while the socket and stud allow the joined material layers to open and close. They are a practical choice to evaluate for coat and jacket fronts, bag flaps, wallets, certain shirts and carefully tested children's garments. Selecting by cap diameter alone is not enough: snap family, mating components, material thickness and setting-die profile must all match.

Base Material and Finish: Nickel, Gunmetal and Gold

According to the technical product record, both the cap and the three bottom components are made from sheet metal. They should not be described as solid brass or stainless steel. A plating or finish color is not a material declaration, and the record does not establish a particular salt-spray resistance, corrosion warranty, wash-cycle rating or other certified durability value.

Nickel gives a silver-tone metallic appearance. Gunmetal (Black Nickel) identifies the dark gray metallic finish; the Turkish name Füme refers to the same color family. The orderable option is labeled Black Nickel, rather than a separate Gunmetal or Smoke Gray option. Gold gives a gold-tone appearance without implying a gold or brass base material. If you need consistent finishes across zipper pulls, eyelets, rivets and snap caps, use physical samples or a finish reference agreed with your supplier.

Exact Component Measurements

The snap belongs to the commercial 12 mm (0.47 in) size class, approximately 20 ligne. The stated cap diameter is 12.2 mm (0.48 in). The spring/socket diameter is 11.8 mm (0.46 in), and the stud outside diameter is 9.8 mm (0.39 in). A 10 mm (0.39 in) measurement is listed for the post, but the source does not identify whether that value refers to its length, diameter or another dimension; do not infer a hole size from it.

The outer cap is the visible part of the snap. The socket holds the opposing stud, and the post helps secure the assembly through the selected material. These components must be supplied and set as the correct 54-system family. Snaps from the Alfa or other systems are not automatically interchangeable, even when an outside measurement looks similar. For reliable fit, check both component geometry and die profile before production.

250 Complete Sets Per Pack

One sales pack contains 250 complete four-piece snap sets, not 250 loose components. Specifically, it contains 250 caps, 250 sockets, 250 studs and 250 posts, totaling 1,000 individual metal pieces that make 250 usable snaps. Setting dies, hand tools, presses and hole punches are not included. The recorded minimum ordering quantity is 250 sets.

For planning and stockkeeping, 250 sets = 1 pack, 1,000 sets = 4 packs, 5,000 sets = 20 packs and 10,000 sets = 40 packs. Existing quantity-discount thresholds refer to the number of complete snaps, not to separately counted cap/socket/stud/post pieces. Review the live checkout quantity and displayed pricing at the time of purchase.

Choose the Right 54-System Setting Die

The associated die in the product's technical record is KLP0056, a 12.5 mm (0.49 in) 54-system snap setting die. This is a separate tool that must be matched to the specific cap profile and the other mating components. The die includes upper and lower setting pieces and is used with compatible equipment. The fact that two fasteners share a nominal diameter does not prove that the same die will set both correctly.

For sample work or modest workshop output, the M0099 manual hand press can be considered with the appropriate die. The M00100 manual impact press is another option when its die connection and operating pressure match the application. A KLP00EL01 hammer-operated die holder may be useful where a full press is not used, but a holder is not a replacement for the matching snap die. Check the threads or other mounting interface and press base support before placing a tooling order.

Do You Need a Hole Punch?

Not every four-part snap installation requires a pre-punched hole. The decision depends on the fabric or leather structure, layer count, post geometry and setting method. Do not use the 12.2 mm (0.48 in) outside cap measurement as the punch diameter. No single verified hole-punch size is listed for this product, so recommending a particular 3 mm, 4 mm or 12 mm punch for every application would be misleading.

Start by fitting the snap to an offcut of the real material. Where a prepared hole is necessary, choose the punch only after checking the post and material thickness. A punching die makes the opening; a snap setting die forms and joins the snap. They perform separate tasks and should not be confused.

Application and Quality Checks Before Production

For coat and jacket plackets, align the cap and mating side carefully so the material does not twist when closed. A bag flap or wallet may expose the snap to bending and repeated pulling in a different direction. On thicker leather, heavy denim or multilayer textiles, the same press adjustment may behave differently from a lightweight woven fabric. Make a representative sample before bulk use and review opening force, closure feel, cap marks, loosening and damage to the fabric.

Children's and baby garments need any pull-off, small-parts and other safety checks appropriate to the intended destination market. The fact that the snap may be used on children's garments is not proof of compliance with a particular standard. For consistent repeat orders, keep a physical sample labeled with the approved finish, component dimensions, setting die and fabric build-up.

For branded caps or a special finish, provide a sample, artwork and expected order quantity to the supplier so production feasibility and quotations can be assessed for the specific application.

Frequently Asked Questions

Is this snap made from stainless steel?

No. The cap and lower parts are listed as sheet metal. Nickel, Gunmetal (Black Nickel) and Gold refer to surface finishes, not base-metal composition.

How many complete snaps are supplied in one pack?

One pack contains 250 complete sets: 250 caps, 250 sockets, 250 studs and 250 posts, or 1,000 individual components.

Why is the cap measured as 12.2 mm?

12 mm (0.47 in) is the nominal size category. The product record gives the actual cap diameter as 12.2 mm (0.48 in).

Do Gunmetal and Black Nickel mean the same finish?

Yes. They describe the same dark gray metallic color family, also called Füme in Turkish. The selectable color is Black Nickel.

Which setting die is recommended?

The technical record lists KLP0056, a 12.5 mm (0.49 in) 54-system setting die. Confirm cap shape and press compatibility with a sample.

Should I punch a 12 mm hole?

No. Cap diameter is not the required hole diameter. Hole preparation depends on post geometry and the actual material; no fixed punch diameter is confirmed.

Are 54-system and Alfa components interchangeable?

No. They belong to different snap systems and should not be mixed without specific evidence of compatibility.

Is this suitable for baby clothing or leather goods?

It can be evaluated for these applications, but a real-material installation test and applicable safety checks are required.