Sourcing

Split-Run Specs for Custom Pins, Coins and Keychains

Why Split Runs Fail Without a Version Matrix

The difficult part of a split-run order is usually not the logo. It is one product family divided into many small SKUs: 300 pins for each retail store, 500 keychains per event city, or challenge coins with the same front and different department names on the reverse. If the RFQ says only “same design, assorted versions,” the supplier may quote one combined quantity and later discover that each colorway, backstamp, plating finish or packing card needs separate control.

That creates avoidable cost and schedule risk. Artwork may need to be re-separated, print films remade, enamel colors mixed in smaller batches, or cartons relabeled after packing. On metal promotional products, these corrections commonly add 3 to 7 production days and can introduce mixed SKUs that are hard to detect once goods are sealed for export.

Treat version control as a manufacturing specification, not an email note. A proper split-run RFQ defines what is fixed, what changes, which tooling is shared, how each version is packed, and what inspection plan applies to the smallest SKU. This guide applies to custom enamel pins, brooches, keychains, fridge magnets, medals and challenge coins.

• Create one version matrix before quotation, not after sample approval.
• Use one row per sellable SKU with quantity, finish, attachment and packaging.
• Match artwork file names to the same SKU codes used in the matrix.
• Ask whether MOQ is per design, per version, per plating finish or per packing style.
• Require the quote to separate tooling, setup charges and FOB unit price.
• Approve packing labels and carton marks before mass packing starts.

Define Fixed and Variable Elements

Start by separating fixed elements from variable elements. Fixed elements usually include outer shape, size, base metal, thickness, die-struck line art, attachment position and main relief. Variable elements may include Pantone enamel colors, UV-printed text, engraved serial numbers, city names, backstamp wording, backing cards, polybag labels and carton marks.

The most economical split run keeps hard tooling unchanged and varies only low-cost decoration. A 30 mm soft enamel pin with the same metal lines and five Pantone color versions can usually share one die. A 45 mm zinc alloy keychain with the same molded body but ten UV-printed event logos can also share the casting mold if the print area and attachment remain unchanged.

Small artwork edits can still become tooling changes. Moving a raised metal line by 0.3 mm, changing a cutout, altering coin edge text, revising the rim, or increasing a pin from 30 mm to 32 mm normally requires new tooling. For die-struck brass, etched iron and cast zinc alloy products, changes outside a typical engineering tolerance of ±0.15 mm should be treated as a separate tool unless the factory confirms otherwise in writing.

Change Type	Can Usually Share Tooling	Typical Extra Cost	Main Risk If Missed
Pantone enamel color change	Yes, if metal lines stay fixed	USD 8-25 per color setup, often waived above 500 pcs/version	Wrong color allocation or delayed color approval
UV printed text or logo	Yes, if print area stays fixed	USD 10-35 per film or digital setup	Incorrect version quantity or print file used
Laser serial number or name	Yes	USD 0.03-0.15/pc depending on data handling	Duplicate, skipped or unreadable serials
Backstamp wording	Sometimes, if laser engraved or insert-stamped	USD 15-60 setup; new die if molded into tool	Wrong legal, brand or department text
Outer shape, cutout or rim change	No for most metal products	New tool, usually USD 45-180 for pins; USD 80-250 for coins/keychains	Underquoted PO and revised lead time
Attachment or hardware change	Sometimes	USD 0.02-0.25/pc plus separate packing control	Mixed clutches, chains or magnets

MOQ and FOB Price Tiers by Product

A supplier’s published MOQ does not automatically apply to split runs. “MOQ 100 pcs” may mean 100 pcs per design, per colorway, per plating finish or per retail packing style. For a 1,000-piece order split into ten versions, confirm whether the factory accepts 100 pcs per version or prices it as ten small orders.

For enamel pins and small metal badges, 100 pcs per version is a practical minimum when tooling is shared. Below that level, rack loading, color mixing, counting, inspection and packing often cost more than the metalwork. For challenge coins, 50 pcs per version may work if only the back is laser engraved, but 100-200 pcs per version is more stable for enamel fill, antique finishing and edge control.

Material also matters. Acrylic keychains can often split at 50 pcs per version because digital printing and laser cutting do not need a hard metal die. PVC magnets and PVC keychains are less friendly to tiny splits because each molded color and cavity setup consumes labor; 200 pcs per version is a more realistic floor. Metal keychains usually sit between pins and coins: 100 pcs per version is feasible if the body is common, while hardware or plating changes need stricter separation.

Product Type	Shared-Tool Split MOQ	Stable-Cost MOQ	Indicative FOB Range
Soft enamel pin, 20-35 mm	100 pcs/version	300 pcs/version	USD 0.45-0.95/pc at 1,000 pcs total
Hard enamel pin, 20-35 mm	100 pcs/version	300-500 pcs/version	USD 0.70-1.40/pc depending on polishing and colors
Challenge coin, 40-50 mm	50-100 pcs/version	200 pcs/version	USD 1.80-4.50/pc by thickness and finish
Metal keychain, 35-60 mm	100 pcs/version	300 pcs/version	USD 0.85-2.80/pc by alloy, plating and hardware
Acrylic keychain, 50-70 mm	50 pcs/version	200 pcs/version	USD 0.45-1.20/pc by print layers and thickness
PVC magnet or keychain	200 pcs/version	500 pcs/version	USD 0.65-1.80/pc by molded colors and size
Woven or embroidered patch	100 pcs/version	300 pcs/version	USD 0.35-1.25/pc by stitch density and backing

Tooling, Plating and Color Control

The main cost driver is whether versions share the same tool. A standard 25-35 mm enamel pin die commonly costs USD 45-90, depending on line density and size. A zinc alloy keychain mold or 3D challenge coin tool commonly ranges from USD 80-250 because relief depth, curved surfaces and undercuts require more machining. Eight unnecessary tools can erase the savings of a consolidated PO.

Plating is often underestimated. Gold, nickel, black nickel, copper, rose gold, antique brass and antique silver require separate plating batches or separate rack control. A 1,000-piece order split into five finishes is not equivalent to one 1,000-piece plating run. For decorative imitation gold, plating thickness is often around 0.05-0.10 microns over a nickel barrier. Nickel finishes specified for better wear resistance may use 3-5 microns, depending on base metal, exposure and compliance needs.

Color setup has its own limits. Soft enamel supports split colors well because enamel is filled after plating and contained by raised metal lines. Hard enamel adds filling, baking and polishing; a ten-version run with eight to twelve colors per version can add 2-4 production days versus a single colorway. For Pantone-controlled enamel or printing, specify coated or uncoated references such as Pantone 186 C, approve a physical swatch when possible, and use Delta E 2-3 as a realistic instrumental tolerance for promotional products. Do not judge final color against a backlit monitor.

Lead Time and Sampling Plan

Split runs take longer than single-version orders because every version adds control work. A simple 1,000-piece enamel pin order may take 12-18 production days after artwork and sample approval. The same quantity divided into ten SKUs may require 15-23 days, even with shared tooling, because color filling, curing, inspection, counting and packing must stay separated.

Sampling should match the production risk. If all versions share one tool, one full physical sample can approve metal shape, plating, attachment, enamel depth and epoxy coverage. The remaining versions can be approved by digital proof if they only change color names or printed text. If versions use different plating finishes, attachments, epoxy coverage, glow enamel, glitter enamel or retail packaging, approve one physical sample for each production route.

Rush split orders need discipline. If goods must leave China within 20 calendar days, keep the order to three to five versions, use standard plating, avoid hard enamel with many colors, avoid antique plating plus paint on deep relief, and use common hardware such as butterfly clutch, rubber clutch, split ring or lobster clasp. For air freight deadlines, build in at least 2 days for final QC, carton labeling and export pickup after production is complete.

Order Situation	Sample Time	Mass Production Time	Best Use Case
One shared tool, color-only split	5-7 days	12-18 days	Pins, badges and medals with stable metal shape
Shared tool, UV print text split	5-7 days	10-16 days	Acrylic keychains, metal tags and backing cards
Shared front, laser variable back	5-8 days	12-17 days	Department coins, award tags and member badges
Different plating by version	6-9 days	15-22 days	Retail sets needing gold, nickel and black nickel
Different mold by version	7-12 days	18-30 days	True separate designs under one consolidated PO
Accepted rush split order	3-5 days	8-14 days	Simple specs, limited SKU count and standard packing

Packing, Labels and Carton Control

Most split-run failures happen at packing, not casting or enamel. If version A and version B look similar, a packer can place the wrong item on a backing card, mix 20 pieces into the wrong inner box, or apply a carton label that does not match the SKU inside. “Pack separately” is not enough; packing must be written like a warehouse instruction.

A reliable structure for small metal products is one item per OPP bag, 50 or 100 pieces per inner bag or inner box, and one SKU per export carton. If the quantity is too small for one carton per SKU, use labeled inner boxes inside a master carton. Each inner label should show SKU code, version name, quantity, PO number, carton sequence and destination if applicable.

For split orders above five versions, use barcode labels or large human-readable labels such as NYC-BLUE-2026 rather than only factory item numbers. If the shipment goes to a 3PL or retail DC, set carton gross weight limits at 10-15 kg for metal items to prevent repacking. Keep spare retail cards by version, usually 2-5%, if cards are applied by hand and rejects are likely during packing.

• Use one SKU per inner box unless mixed cartons are approved in writing.
• Print version names on backing cards, polybag labels and carton labels.
• Match carton labels to the version matrix and commercial packing list.
• Set counting tolerance at exact quantity, or ±1 pc per SKU only if agreed.
• Request packing photos showing all SKUs, labels and carton marks before shipment.
• Keep master carton weights under the warehouse limit stated in the PO.

QC Sampling for Small Versions

Inspection must follow the version structure. If an inspector samples 80 pieces from a 1,000-piece order but checks only the largest SKU, small versions may ship with the wrong enamel color, backstamp, hardware or packing card. The inspection plan should cover both product defects and version accuracy.

For general promotional metal products, many buyers use AQL 2.5 for major defects and AQL 4.0 for minor defects. Critical defects should have zero acceptance: sharp edges that can cut skin, loose magnets that create a swallowing hazard, missing safety caps where required, unreadable compliance marks, or incorrect legal branding. Typical dimensional tolerances are ±0.2 mm for small stamped pins, ±0.3 mm for cast zinc alloy parts and ±0.5 mm for flexible PVC or embroidered patches.

Version accuracy needs a separate checklist. Inspectors should verify SKU quantity, enamel color, plating finish, attachment, backing card, serial range and carton label. For QR codes or laser serial numbers, scan samples from every serial range rather than only the first and last piece. If the buyer needs stronger control, request 100% counting by version and photo records for each SKU, but expect a handling charge on small split orders.

QC Item	Recommended Check	Acceptance Target
Version quantity	Count each SKU or weigh-count after master count approval	Exact quantity or agreed tolerance of ±1 pc
Color match	Compare with approved swatch under D65 light	Delta E 2-3 where instrument control is used
Plating finish	Visual check plus tape or rub test if required	No peeling, exposed base metal or obvious mismatch
Attachment strength	Pull test posts, chains, split rings or magnets	No detachment under agreed load, often 2-5 kgf
Dimensions and thickness	Caliper check by SKU against drawing	Within tolerance, commonly ±0.2-0.5 mm
Packing accuracy	Match inner labels, carton labels and packing list	No mixed SKU unless approved
QR or serial data	Scan sample from each supplied range	Readable, correct and non-duplicated

How to Quote the Order Cleanly

A clean split-run quote has three layers: shared tooling, per-version setup and FOB unit price by version quantity. If the supplier gives only one blended unit price, the buyer cannot see whether it assumes one plating finish, one enamel palette, one backing card or one carton label. That makes later changes harder to price and harder to control.

Ask for setup charges to be visible. A 30 mm soft enamel pin with one shared die and 1,000 total pieces may quote at USD 0.45-0.95 FOB per piece, depending on thickness, plating, color count, attachment and packing. The same item split into ten versions of 100 pcs may increase 10-30% because of setup, counting and packing labor. A 50 mm challenge coin may quote at USD 1.80-4.50 FOB per piece at moderate quantities, while variable back text may add USD 0.05-0.20 per piece or a fixed setup charge.

Split runs make sense when the versions reduce downstream sorting, support regional branding, create retail collectability or allow one central PO to serve multiple teams without losing SKU control. They do not make sense when the product will be handed out at one trade show and versioning adds no business value. Before issuing the PO, send the base artwork and version matrix for engineering review so the factory can mark which changes affect molds, plating, printing, engraving, packing and lead time.

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