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Buyer-ready formats • Specs-first sourcing • California supply programs

Bulk Walnut Products

Source California bulk walnut products across in-shell programs, kernels, roasted formats, cuts/meals, oils, and spreads—aligned to your process, grade targets, packaging, and documentation needs. Atlas Nut Supply, LLC cooperates with multiple suppliers and processors to support consistent procurement lanes for manufacturing and global trade.

If you already know what you need, use the quote-ready checklist. If you’re comparing options, start with the specs-by-format section below to match the right walnut input to your application.

Formats
14+
Programs
Domestic + export lanes
Support
Specs • packaging • documentation

Request a quote Open format pages Back to catalog

Specs by format Quality & QA Packaging programs Buying guide Format pages Quote checklist

Fastest quoting: specify format, size/cut, grade/defect tolerance, micro requirements (pasteurized if needed), pack-out (bags/cartons or drums/totes for oils), volume + forecast, destination/port, and documentation needs (COA/traceability/certs).

Bulk Walnut Products for wholesale supply — Atlas Nut Supply

Available walnut formats

Common program formats (availability varies by season and supplier program). If you need a specific style (skin-on vs blanched, roast profile, or oil spec), include it in your inquiry so we can align a quote-ready option.

  • In-shell walnuts (natural or bleached appearance programs)
  • Raw walnut kernels (halves/pieces programs depending on grade targets)
  • Pasteurized walnut kernels (micro-aligned programs as required)
  • Dry roasted walnuts (profile, color, and flavor intensity defined)
  • Oil roasted walnuts (oil type, seasoning compatibility, and profile defined)
  • Diced walnuts (cut size alignment for inclusions and process flow)
  • Walnut meal / walnut flour (mesh/particle size, fat content alignment)
  • Defatted walnut protein powder (protein and functionality targets program dependent)
  • Walnut oil (cold-pressed edible, crude, refined)
  • Walnut butter (grind, texture, oil separation targets)
  • Retail packaging programs (if applicable to your channel)

For each format we can align: grade/defect limits, pack-out (bags/cartons/drums/totes), and documentation (COA/traceability) per program.

Industrial applications

Typical manufacturing and ingredient uses:

  • Bakery: inclusions for breads, cookies, brownies, laminated pastries, fillings
  • Confectionery: clusters, bars, inclusions, pralines, nut pastes and spreads
  • Snacks: roasted kernel programs, seasoned SKUs, nut blends and trail mixes
  • Sauces & culinary: walnut-based sauces, pesto-style applications, toppings
  • Nutrition: meal/flour and protein powder applications (format dependent)
  • Oils: dressings and culinary oils, ingredient blends, private-label programs (program dependent)

For deeper application and procurement guidance, see the Atlas Nut Academy.

Product specifications by format (buyer-ready)

Below is a practical, quote-oriented spec map used across many bulk walnut programs. Think of these as the fields procurement & QA teams typically lock before approving a supplier lane. If you already have a spec sheet, send it—we’ll match it to an available program.

Grades & defects Size & cut Micro / pasteurized Oxidation & shelf-life Packaging COA & traceability

1) Walnut kernels: halves & pieces

Kernels are usually qualified by color, halves/pieces ratio, and defect tolerance, then backed by lot COA and traceability.

Specification Common request Notes (how to specify for quotes)
Form Halves / large pieces / medium pieces / small pieces Define your inclusion needs and acceptable breakage. For visual products (bakery toppings, premium mixes), halves % matters.
Color / appearance Extra Light / Light / Light Amber / Amber Color language is commonly standardized for walnut trade. Share target color class and tolerance for mix by lot.
Size definition Screen/sieve-based size targets If your line is sensitive to fines/dust, specify minimum size and max fines content, and how it’s measured.
Defects & foreign material Program-defined limits Typical specs include insect damage, mold, shrivel, shells, stones, and other FM. Provide your internal defect sheet if available.
Micro / pasteurization Raw or pasteurized programs Some buyers require pasteurized kernels aligned to their QA program. Include micro targets and pasteurization preference (if required).
Packaging Bags/cartons; palletized Confirm case pack, pallet height/weight constraints, and if you need liners or vacuum/modified atmosphere packaging (program dependent).

If you’re replacing an existing supplier, send a photo and the exact grade/size call-out from your current spec—this is the fastest way to match a like-for-like program.

2) In-shell walnuts

In-shell programs are usually qualified by size class, shell appearance, and soundness. Destination requirements can also matter.

Specification Common request Notes (how to specify for quotes)
Shell appearance Natural or bleached/treated appearance programs Appearance preferences can be market-specific. Specify destination and any special labeling/compliance requirements.
Size class Jumbo / Large / Medium / Small (program-dependent) In-shell sizing is typically diameter-based. Specify your preferred size band and tolerance for mixed sizes.
Soundness Program-defined Quotes commonly align to internal quality and shell integrity expectations (e.g., damage, mold, excessive loose kernels).
Packaging Bags/cartons; palletized Confirm pack size, pallet limits, and container loading preferences for export.
Documentation COA / COO / traceability Export lanes often require additional docs. Share destination, port, and incoterms preference if applicable.

3) Roasted walnuts (dry roasted / oil roasted)

Roasted programs are qualified by roast profile, color, flavor intensity, and breakage/fines, then packaged to protect freshness.

Specification Common request Notes (how to specify for quotes)
Roast method Dry roast or oil roast Specify method and whether seasoning is applied. For oil roast, specify oil type if it matters to your allergen or label program.
Profile Light / medium / dark (program-defined) Provide target color and flavor intensity and whether “toasted” notes are acceptable.
Salt/seasoning None or defined If seasoned, specify inclusion rate targets and acceptable variance.
Breakage & fines Program-defined Important for snack blends and inclusions. Define maximum fines content if your line is sensitive.
Packaging Barrier bags/cartons (program-dependent) Roasted formats often need higher-barrier pack-outs to protect aroma and reduce oxidation drift.

4) Diced walnuts (controlled cut)

Diced programs are chosen when you need controlled distribution in bars, bakery, or confectionery, and consistent flow through hoppers/feeders.

Specification Common request Notes (how to specify for quotes)
Cut size Program-defined (e.g., small dice vs larger cut) State target size and allowed fines %. If you have an existing screen spec, share it.
Fines control Max fines % Critical for weight accuracy and line cleanliness. Specify measurement method if required (screening).
Color/defects Program-defined For visible inclusions, define color expectations and defect tolerance.
Micro requirements Raw or pasteurized (if required) Include micro targets if your product is RTE and your QA program requires it.

5) Walnut meal / walnut flour (milled)

Meal/flour is specified by mesh/particle size, fat content (natural vs partially defatted), and flowability for your process.

Specification Common request Notes (how to specify for quotes)
Particle size Defined mesh / microns Tell us your use (breading/coating, bakery blend, extrusion, R&D) and your preferred mesh or sieve call-out.
Fat level Natural meal vs lower-fat options Fat level impacts clumping, flavor, and oxidation stability. Specify if you need a more “defatted” profile.
Moisture & stability Program-defined Share shelf-life targets and storage conditions so we can align oxidation expectations and pack-out.
Micro / allergens Program-defined Include micro targets and allergen handling expectations (facility constraints, cross-contact declarations, etc.).
Packaging Bags/cartons; liners Meal/flour often benefits from liners and moisture control. Specify pallet constraints and receiving method.

6) Defatted walnut protein powder (press-cake derived)

Protein powder programs are typically qualified by protein %, residual fat %, mesh, and application performance (bars, bakery, blends).

Specification Common request Notes (how to specify for quotes)
Protein target Program-defined % Share target protein %, end use, and any functional expectations (water binding, dispersibility, texture impact).
Residual fat Program-defined % Residual fat affects flavor and oxidation. Specify your max residual fat and shelf-life expectations.
Particle size Defined mesh / microns Choose finer mesh for smoother blends; coarser for texture systems. Provide your preferred spec.
Micro / pasteurization Program-defined If used in RTE products, define micro targets and whether a validated pasteurization step is required.
Packaging Bags/cartons Specify bag size and pallet constraints; consider liners for moisture and odor control.

7) Walnut oil (cold-pressed edible / crude / refined)

Bulk oils are qualified by sensory and oxidation limits (commonly FFA/acid value and peroxide value), then pack-out (drums/totes). Cold-pressed oils are often selected for flavor; refined oils for neutrality.

Specification Common request Notes (how to specify for quotes)
Oil type Cold-pressed edible / crude / refined Tell us whether you want walnut character (cold-pressed) or a more neutral oil (refined). Crude may be used as a processing input.
FFA / acid value Max target Primary oxidation/stability metric. Specify your max and how it’s measured in your QA program.
Peroxide value (PV) Max target Key freshness indicator. Specify your max PV and your shelf-life expectations under your storage conditions.
Color & clarity Range + filtration expectations Cold-pressed oils can be more aromatic and may vary more by lot. Specify acceptable variation and filtration needs.
Sensory Odor/flavor target + acceptable variance Provide benchmark sample references if you have them. This is the fastest way to align flavor-forward programs.
Packaging Drums or totes Confirm receiving constraints: dock access, forklift capability, temperature controls, pallet limits, and unloading preferences.
Documentation COA / traceability / export docs Include any label claims, certifications, or destination documentation requirements in your request.

If you’re benchmarking against an existing refined oil spec, send your target acid value + peroxide value and sensory notes—this lets us match a similar lane when available.

8) Walnut butter (spread / ingredient)

Butter programs are qualified by grind/texture, oil separation, and intended use (spread vs ingredient system).

Specification Common request Notes (how to specify for quotes)
Texture / grind Smooth / medium / coarse (program-defined) Define texture target and whether visible particulates are acceptable.
Oil separation Target separation behavior Specify whether stabilizers are allowed and what “acceptable separation” means for your channel.
Ingredient statement 100% walnut vs formulations If you need “100% walnuts” or specific label constraints, specify upfront.
Packaging Pails/drums/totes (program-dependent) Share your receiving method and whether heated handling is acceptable or required.
Micro / allergens Program-defined Include micro targets, allergen declarations, and facility constraints if required.

Industry terminology note: Size/color/grade language commonly references U.S. trade standards and California walnut industry conventions. If your internal spec uses different naming, send it—we’ll translate and match.

Quality & QA (how bulk programs reduce risk)

Bulk walnut programs typically succeed when quality is defined in measurable targets and verified lot-by-lot. We can align supplier lanes around the controls most QA teams require:

  • COA parameters: program-appropriate tests for the format (kernels vs meal vs oil)
  • Traceability: lot IDs, production/pack dates (where applicable), and chain-of-custody support
  • Micro expectations: pasteurized programs where required; buyer-defined targets where applicable
  • Foreign material controls: screens/metal detection programs (supplier-program dependent)
  • Allergen declarations: tree nut handling statements and facility constraints as required

If you’re onboarding a new supplier lane, send your internal QA spec sheet and any required test panels—this helps us match compliant programs faster.

Oxidation, freshness, and shelf-life

Walnuts and walnut oils are naturally sensitive to oxidation. Stable supply programs usually define both product targets (what’s in spec) and handling expectations (how it’s stored and moved).

  • Moisture & storage: specify facility conditions and expected storage duration
  • Freshness controls: FIFO rotation and lot-level traceability in your receiving workflow
  • Oil programs: define FFA/acid value and peroxide value targets plus sensory expectations
  • Packaging impact: barrier pack-outs and liners can reduce off-odor risk (format dependent)

Share your shelf-life goal and distribution conditions (ambient vs temperature-controlled) and we’ll align the best program and pack-out.

Packaging programs (nuts, meal/flour, protein)

Bulk walnut solids are typically shipped in industrial cases/bags. Quote accuracy improves when pack-out constraints are included upfront.

  • Pack types: bags/cartons (program dependent)
  • Liners/barrier: specify if you require liners or higher-barrier packaging
  • Pallet limits: max height and weight; dock constraints
  • Receiving method: forklift access, clamp preferences, internal handling requirements
  • Labeling: lot ID, pack date (where applicable), and documentation alignment

Packaging programs (oils & butters)

Oils typically run in drums or totes. Butters may ship in pails/drums/totes depending on viscosity and handling requirements.

  • Oils: drums or totes; confirm receiving temperature preferences and pump/handling capability
  • Butters: pails/drums/totes (program dependent); confirm whether warming is acceptable/required
  • Export lanes: specify port, incoterms preference (if applicable), and documentation requirements

Include your destination (city/state/country or port) and required delivery window so we can plan lane feasibility and lead time.

How to choose the right walnut format

Many buyers start with “walnut” and discover late-stage constraints (cut size flow, micro targets, oxidation stability, or packaging limitations). This quick guide helps align the right format to your process:

Kernels: halves & pieces

  • Choose kernels when appearance and bite matter in the finished product
  • Define halves/pieces ratios, color expectations, and defect tolerance
  • If your QA program requires it, ask about pasteurized programs

Diced, meal, flour, protein

  • Choose diced pieces for consistent inclusions and controlled distribution
  • Choose meal/flour for milling, coatings, bakery blends, or texture systems
  • For protein powder programs, define protein % and functionality expectations

Roasted walnuts

  • Choose roasted formats when you want ready-to-use flavor and reduced in-house processing
  • Specify dry vs oil roast, color targets, flavor intensity, and seasoning compatibility
  • Align packaging to preserve freshness and reduce breakage

Walnut oil & butter

  • Oils are typically qualified by sensory and oxidation limits (often FFA/PV), then pack-out (drums/totes)
  • Butter is qualified by grind/texture, oil separation targets, and intended use (spread vs ingredient)
  • Share your application so we can align the best program (cold-pressed vs refined options vary)

Walnuts product pages

Open an individual walnuts format page for specs, applications, and quote-ready checklists.

Bulk In-shell walnuts (natural) for wholesale supply — Atlas Nut Supply

In-shell walnuts (natural)

Specs-first page for bulk in-shell walnuts (natural) sourcing, packaging, documentation, and lanes.

 Bulk In-shell walnuts (bleached) for wholesale supply — Atlas Nut Supply

In-shell walnuts (bleached)

Specs-first page for bulk in-shell walnuts (bleached) sourcing, packaging, documentation, and lanes.

 Bulk Raw walnut kernels for wholesale supply — Atlas Nut Supply

Raw walnut kernels

Specs-first page for bulk raw walnut kernels sourcing, packaging, documentation, and lanes.

 Bulk Pasteurized walnut kernels for wholesale supply — Atlas Nut Supply

Pasteurized walnut kernels

Specs-first page for bulk pasteurized walnut kernels sourcing, packaging, documentation, and lanes.

 Bulk Dry roasted walnuts for wholesale supply — Atlas Nut Supply

Dry roasted walnuts

Specs-first page for bulk dry roasted walnuts sourcing, packaging, documentation, and lanes.

 Bulk Oil roasted walnuts for wholesale supply — Atlas Nut Supply

Oil roasted walnuts

Specs-first page for bulk oil roasted walnuts sourcing, packaging, documentation, and lanes.

 Bulk Diced walnuts for wholesale supply — Atlas Nut Supply

Diced walnuts

Specs-first page for bulk diced walnuts sourcing, packaging, documentation, and lanes.

 Bulk Walnut meal for wholesale supply — Atlas Nut Supply

Walnut meal

Specs-first page for bulk walnut meal sourcing, packaging, documentation, and lanes.

 Bulk Defatted walnut protein powder for wholesale supply — Atlas Nut Supply

Defatted walnut protein powder

Specs-first page for bulk defatted walnut protein powder sourcing, packaging, documentation, and lanes.

 Bulk Cold-pressed edible walnut oil for wholesale supply — Atlas Nut Supply

Cold-pressed edible walnut oil

Specs-first page for bulk cold-pressed edible walnut oil sourcing, packaging, documentation, and lanes.

 Bulk Crude walnut oil for wholesale supply — Atlas Nut Supply

Crude walnut oil

Specs-first page for bulk crude walnut oil sourcing, packaging, documentation, and lanes.

 Bulk Refined walnut oil for wholesale supply — Atlas Nut Supply

Refined walnut oil

Specs-first page for bulk refined walnut oil sourcing, packaging, documentation, and lanes.

 Bulk Walnut butter for wholesale supply — Atlas Nut Supply

Walnut butter

Specs-first page for bulk walnut butter sourcing, packaging, documentation, and lanes.

 Bulk Retail packaging programs for walnuts for wholesale supply — Atlas Nut Supply

Retail packaging programs for walnuts

Specs-first page for bulk retail packaging programs for walnuts sourcing, packaging, documentation, and lanes.

Specs checklist (quote-ready)

Send your spec sheet if you have one. Otherwise, start with the checklist below for faster alignment.

  • Format: in-shell, kernels, roasted, diced, meal/flour, protein, oil, or butter
  • Grade & size targets: halves/pieces ratio, cut size, mesh/particle size (meal/flour)
  • Quality targets: defect tolerance, moisture/freshness expectations, oxidation/rancidity expectations
  • Roast profile: dry vs oil roast, color targets, flavor intensity (if applicable)
  • Micro requirements: specify targets; request pasteurized programs if needed
  • Allergen handling expectations: as required by your QA program
  • Packaging: bags/cartons; oils in drums/totes; include pallet and receiving constraints
  • Volume: first order + annual/rolling forecast
  • Delivery cadence: one-time shipment vs scheduled releases
  • Destination: city/state/country (or port) and required delivery window
  • Documentation: COA, COO/traceability, and certifications if required

Tell us the end application and process (baking, confectionery, milling, roasting, extrusion, or oil processing) and we’ll help confirm the best format and spec targets.

Request a quote Contact options

FAQ: bulk walnut

What walnut formats do you supply in bulk?

We source in-shell (natural/bleached appearance programs), raw and pasteurized kernels, roasted walnuts, diced pieces, meal/flour, defatted protein powder, walnut oil programs (cold-pressed/crude/refined), walnut butter, and select retail packaging programs (program dependent).

What is the difference between natural and bleached in-shell walnuts?

In-shell programs may be offered with natural shell appearance or bleached/treated shell appearance for specific market preferences. Availability depends on program and destination requirements.

Do you supply walnut pieces and meal for industrial use?

Yes. We can source diced pieces and walnut meal. Specify cut size, defect allowance, and intended application so we can match grade.

Can you provide walnut oil and walnut butter in bulk?

Yes. We can supply cold-pressed edible walnut oil, crude/refined oil programs, and walnut butter depending on program availability. Share packaging needs (drums/totes for oil) and intended end use for best alignment.

Do you support domestic and export lanes?

Yes. We supply within the U.S. and support global exports. Share destination, packaging preferences, and required documentation so we can align the lane.

Can you provide COA and traceability documentation?

Yes. COA and traceability documentation are available per supplier program. If you require certifications or additional compliance documents, include them in your inquiry.