Nakiri Knife Private Label Specification for Serious Buyers

Start With the Blade Geometry

The nakiri is a vegetable knife, not a mini cleaver. That line matters when you brief a nakiri knife factory China team. We’ve had buyers send a cleaver photo and then reject the first sample because the front felt too heavy on cabbage. A cleaver spec can carry a thicker blade and more weight forward; a nakiri spec needs a flatter edge, clean push cuts and lower resistance through onions, cabbage and herbs. Wrong reference photo, wrong sample.

For mainstream European and North American retail, a useful starting point is a 165–170 mm blade length, 48–52 mm blade height and 1.8–2.2 mm spine thickness at the heel. On our grinding line, we check heel thickness with a digital caliper before the blade goes to final edge work. If you want a premium cutting feel, ask for the edge to be thinned to about 0.25–0.35 mm before final sharpening. Push it much thinner and the math doesn’t work: slicing improves, but chipping claims rise when home users twist the blade through hard squash or frozen food.

The edge profile should be nearly flat, not dead flat. A dead-flat edge often leaves uncut fibers when the board is 1 mm out or the user rocks the handle. QC pulled one sample last year that looked perfect on the drawing but skipped parsley stems on a worn PE board. We normally run a slight belly, with the last 20–30 mm near the tip kept low. It still chops like a nakiri without annoying people in real kitchens.

Put tolerances into the drawing. “Blade length 167 mm ±2 mm” is better than a photo with a note. “Blade height 50 mm ±1.5 mm” stops a supplier from shaving the blade shorter to save steel. For a custom nakiri knife, the drawing should also show spine rounding, choil finishing, bevel type, logo position and handle centerline. We’ve seen this go sideways from one PO typo: logo 18 mm from the heel became 18 mm from the handle joint, and the buyer flagged every carton during inspection.

Steel and HRC Choices That Sell

Steel choice is half cutting feel, half shelf position. We ship a sound nakiri in 3Cr13, but the math does not work if a buyer wants to price it beside 5Cr15MoV, 7Cr17MoV, 10Cr15CoMoV or layered Damascus. The wrong question is “which steel name sells best?” Ask what HRC the heat-treatment oven can hold across the lot. On one 800-piece pilot run, QC pulled the sample after tempering and found a 2 HRC spread from heel to tip; that tells you more than the steel grade printed on the carton. For kitchen knives, HRC band and temper consistency decide whether the edge rolls after chopping cabbage or chips when the user hits a cutting board staple.

For entry retail and promo channels, 3Cr13 or 420J2 at 52–55 HRC keeps cost down and fights rust well. It sharpens fast. Edge life is short. For standard private label kitchen knives, 5Cr15MoV at 56–58 HRC is the safer export choice because Yangjiang grinding lines know how it behaves on a 180-grit belt before fine polishing. It fits mid-market gift sets and open stock without forcing the MOQ too high, often 1,000 pcs per handle color. For a sharper premium nakiri, 7Cr17MoV, AUS-8 type material or 10Cr15CoMoV can sit around 58–60 HRC, but the edge needs tighter grinding control, usually 0.25–0.35 mm behind the edge before final sharpening.

Damascus nakiri programs need clean specs. Around 7 out of 10 buyer RFQs we see only say “67-layer Damascus,” and that is not a knife specification. Commercial Damascus may mean a stainless clad build with a harder core, or a patterned laminate where the face pattern does most of the selling. Write the core steel, cladding layer count, etching depth, HRC target and corrosion test requirement on the PO. We have seen this go sideways when the buyer flagged a darker etch on the PP sample, but the PO never stated 8–12 μm etching depth or a salt-spray check.

These ranges are factory-floor references, not blanket quotes. A pakkawood handle, mirror polish, color box, 5-layer export carton, laser logo or AQL 2.5 inspection can move the price by 10–35%. Last month one buyer asked why the quote jumped US$0.42; the answer was simple: they changed from plain kraft sleeve to magnetic gift box after the PI, and the carton CBM increased by 18%.

Handle, Balance and Private Label Feel

A nakiri has a tall blade, so 8–15 g of handle weight can change the whole feel on the cutting board. Too light, and the blade drops forward like a cheap cleaver. Too dense, and you lose the front control buyers expect for cabbage, cucumber and leafy greens. For a 165 mm nakiri, a finished weight of 160–210 g usually fits mainstream retail; we check it on a digital scale after handle sanding, not from the CAD file. A wa-style octagonal handle usually lands lighter, while a full-tang Western handle often runs heavier.

Common private label handle choices are pakkawood, G10, ABS, PP, acacia, walnut and stabilized wood. Pakkawood sells well because it gives a warm shelf look without pushing the BOM too far, but the grinding line still has to watch moisture and rivet cleanup. G10 is tougher and more stable for premium, outdoor-looking kitchen ranges, though the sheet cost and CNC time are higher. ABS and PP work for dishwasher-safe budget programs. Careful here: we have seen dishwasher claims go sideways because the blade edge, laser logo or satin finish failed before the plastic handle did.

Do not approve a handle from a render. Wrong question. Ask for a physical pre-production sample and check five points with your hand and a feeler gauge: palm swell, rivet flushness, handle-to-bolster gap, spine comfort and balance point. A 0.3 mm gap at the scale can collect food residue and turn into an EU complaint. A rivet standing 0.2 mm proud sounds small, but customers feel it in three seconds. QC pulled a sample last season where the left scale sat proud by 0.4 mm; the buyer flagged it before we packed the first 500 pcs.

For nakiri knife OEM programs, put handle material grade, color tolerance, moisture content for natural wood, rivet material, tang exposure, surface roughness and logo placement into the spec sheet. If your retail packaging shows a dark walnut handle, do not accept mass production with mixed pale and dark scales unless that contrast is part of the design. We can control this in China factories, but only if the acceptable range is locked before cutting 1,000 sets of scales. One PO even said “wallnut” in the handle column; we stopped it before purchasing, because that typo would not help anyone during inspection.

Logo, Packaging and Compliance Details

Private label work is the point where a stock nakiri stops looking like a factory item and starts looking like your SKU. We run blade logos mainly by fiber laser; for handles and cartons we usually quote pad print, screen print, metal badge, box hot stamp or printed sleeve based on the material. For blades, laser marking is the safe choice. It holds 1.5 mm text, barcodes and model numbers cleaner than deep etching, and after artwork sign-off it usually adds 1 working day, not 5. The grinding line hates rework on finished blades, so this is the wrong place to test a tiny logo with thin lines.

Your logo file should be vector format, ideally AI, PDF or SVG. Define the mark size in millimeters, not just “same as picture.” A good blade marking note reads: “Logo laser marked, black, 22 mm wide, positioned 18 mm from heel and 12 mm above edge line, both sides optional.” If you need Amazon FNSKU, country of origin, warning label or importer address, put those on the packaging drawing early. We had one PO where “Made in Chian” passed the buyer’s first artwork check; QC pulled the color box sample before mass print, but fixing the plate still cost 3 days.

For Europe, ask about LFGB food-contact expectations, REACH requirements for restricted substances and packaging waste marking where applicable. For the United States, FDA food-contact expectations and Prop 65 review matter more when the handle uses coated wood, colored resin or brass parts. For Canada and the UK, importer labeling, bilingual text or UKCA-related packaging claims may appear in retailer manuals. Your supplier cannot guess your channel requirements. Send the retailer manual with the RFQ; we check font height, address format and warning icons before the carton dieline goes to the print shop.

At TANGFORGE in Yangjiang, Zhejiang, China, we normally separate packaging approval from knife sample approval. A knife sample can be approved while the box is still being adjusted. For retail programs, common packaging choices are kraft box for low-MOQ online runs, printed color box for shelf display, magnetic gift box for premium sets, PET window box when buyers want the blade visible, blade guard plus sleeve for light freight, or full gift set tray for bundles. A magnetic box can add US$0.80–2.50 per unit and increase carton volume from 0.045 CBM to 0.071 CBM per 24 pcs, which changes FOB value less than DDP landed cost. We’ve seen this go sideways when procurement approves the box and the forwarder later quotes 18 days by sea plus higher volumetric freight.

MOQ, Sampling and Price Reality

The nakiri knife MOQ comes down to what we must change on the line. Existing blade mold, stock pakkawood handle and laser logo: 300–600 pcs may pass, if the blank and handle scales are already in our rack. For a true custom nakiri knife with a new blade profile, handle tooling, special color box and exclusive handle color, 1,000–2,000 pcs is the honest range. At TANGFORGE, our normal private label MOQ is 600 pcs per SKU for kitchen knives, and lower trial quantities are reviewed case by case when materials are already in stock. We run the stock check by steel coil, handle slab and box paper, not by guesswork.

Sampling usually takes 7–15 days for a logo sample based on an existing model. A new blade drawing, handle CNC setup or Damascus pattern can push sample time to 18–30 days. That 12-day gap matters. Mass production is normally 35–50 days after deposit, sample approval and packaging artwork approval. Peak season before Q4 can stretch this, especially if you are buying gift boxes or mixed kitchen knife sets. Last October, QC pulled the sample because the buyer’s PO said “Nakiri 165mm,” but the artwork file showed 167mm; two days disappeared before anyone touched the grinding line.

Price talks go cleaner when tooling, sample fee, unit cost and freight are split line by line. Asking for “best price for 5,000 pcs” without a spec sheet is the wrong question to ask; the math will move after every detail changes. Send the blade drawing, steel grade, HRC, handle material, logo method, box type, inspection level and target Incoterm, and we can quote something your purchasing manager can use. We’ve seen this go sideways when a buyer approved 3Cr13 in chat, then wrote 5Cr15MoV on the PI after sample approval.

For small importers, FOB China is usually the cleanest first quotation basis. DDP works for some e-commerce sellers, but it hides freight, duty and tax assumptions. Compare FOB against DDP and you are not comparing factories; you are comparing two cost stacks. Ask for carton size, gross weight, pieces per carton and HS code estimate so your freight partner can calculate landed cost. A US$0.40 cheaper knife can lose money if the box doubles carton volume. We ship 24 pcs per master carton on some nakiri SKUs; change the gift box foam from 18 mm to 32 mm and the container count drops fast.

QC Risks Buyers Underestimate

Nakiri QC is not just a sharpness check. The defects we see most often are blade warp, uneven bevels, fat edges above 0.45 mm before final sharpening, bent corners, handle gaps, logo drift, rust freckles, scuffed gift boxes and crushed outer cartons. Tall, thin blades carry stress from heat treatment and the grinding line. QC pulled a sample last March where the warp was 1.5 mm on a granite plate; it still cut paper, but the buyer flagged it as soon as the edge rocked on a cutting board.

Use numbers on the spec sheet. Blade length ±2 mm, blade height ±1.5 mm, spine thickness ±0.2 mm, handle length ±1 mm, logo position ±1.5 mm, HRC within agreed band, and no blade warp over 1.0 mm when checked on a flat plate. Sharpness can be checked with copy paper for basic QC. For a premium line, run CATRA or set an internal cutting media test, such as 30 cuts through 10 mm rope with the same operator and jig. CATRA is the wrong spend for every budget SKU, but for a long-term premium program it gives the buyer and factory the same language.

For final inspection, AQL 2.5 major and AQL 4.0 minor is a practical default for export kitchen knives. Critical defects need zero tolerance: broken blade, loose handle, foreign material, severe rust, unsafe packaging or wrong warning label. If your retailer requires AQL 1.5 major, tell the factory before pricing. The math changes. On a 3,000 pcs MOQ, tighter inspection means extra sorting on the packing table, more rework bins and sometimes a higher rejection cost.

Ask for in-process checks, not just final inspection photos. A workable flow includes incoming steel thickness check, heat treatment HRC sampling, grinding thickness check, handle assembly check, logo first-article approval, final cosmetic inspection and carton drop check. We run the first logo approval before mass etching because one buyer once sent a PO with “Nakri” instead of “Nakiri”, and nobody wants to catch that after 2,400 blades are marked. In our China production line, a batch of 10,000 kitchen knives per month moves smoothly only when QC gates sit inside production, not after packing.

Build a Spec Sheet Suppliers Can Quote

A workable RFQ for a nakiri knife private label specification is one page plus drawings, not 27 messages in a mail chain. The first page should tell us what is locked and what we can adjust. If steel is fixed but handle material is open, write it that way. If retail price is fixed, give the target FOB band, for example USD 3.80–4.20. Then we can quote like a factory, not guess like a trader. On our side, the merchandiser will hand that sheet to the grinding line with calipers set for blade height and spine thickness, so vague wording burns time.

Your spec sheet should include product name, blade length, overall length, blade height, spine thickness, steel grade, HRC, surface finish, edge angle, handle material, handle color, tang construction, logo method, packaging, carton requirements, compliance documents, MOQ target, sample deadline and Incoterm. Add reference photos, but do not rely on photos alone. Photos show style; drawings control production. We once had a buyer send 6 photos and no 2D drawing; QC pulled the sample and found the blade height was 4 mm lower than the approved look, and both sides thought they were right.

Be careful with exclusive designs. If you need mold exclusivity or a no-resale agreement, discuss it before tooling. Around 8 out of 10 ODM handles in this category are factory-owned unless the buyer pays for exclusive tooling and signs ownership terms. For private label importers, this is not legal drama; it is supply chain hygiene. The math does not work if you pay for brand launch photos, Amazon content and carton printing, then see the same handle and blade profile in another distributor’s catalog 6 months later. We have seen this go sideways after a PO typo changed “exclusive handle” into “existing handle.”

The clean buying process is direct and boring: approve drawing, approve sample, approve packaging proof, start production, inspect against the same spec, ship. Problems usually appear when buyers approve one sample, revise artwork later, change packaging after deposit, then ask for 12 days instead of the quoted 18 days. That is the wrong question to ask after steel has been cut. A nakiri program can stay simple, but only if the specification is clear enough for a factory floor in Yangjiang, Zhejiang, China to follow without guessing, down to the 15° edge angle, carton mark and AQL 2.5 inspection point.

Frequently asked questions