🔩 OEM & Custom Parts

MOQ for custom parts is fundamentally a tooling economics question, not a manufacturing capacity question. Let me break it down honestly.

For CNC-machined custom components from existing bar stock with no special tooling — say, a custom body machined in CW617N from standard hex bar — our MOQ is typically 200–500 pieces, depending on machining time per piece. Simpler parts (under 5 operations) can be viable at 200 pieces. Complex parts (8+ operations, multiple setups) need higher volume to absorb setup amortisation.

For custom components requiring new special tooling — a form tool for a specific profile, a broach for a non-standard hex socket, a special thread insert — the tooling cost is charged separately (typically INR 15,000–80,000 depending on complexity) and the MOQ is set at the volume that amortises the tooling to a per-piece cost you can commercially accept. We discuss this explicitly rather than burying tooling cost in an inflated unit price.

For forged custom components — new forging dies — the die cost ranges from INR 1.5 lakh to 6 lakh for a single-cavity brass die, and MOQ is typically 2,000–5,000 pieces for the first order to justify the investment. Multi-cavity dies reduce per-piece tooling cost at higher volumes.

One practical suggestion: if your volume is too low for a custom forged part, consider a machined-from-bar alternative. It costs more per piece but eliminates the tooling investment — often the right decision for low-volume or early-stage product development before you've proven the market.

Tooling ownership is something I insist we agree explicitly before any money changes hands. The confusion around this issue has ended otherwise good supplier relationships, and it's entirely avoidable.

Our policy is simple: custom tooling that is charged to the customer as a separate line item belongs to the customer once payment is received. This includes forging dies, custom casting moulds, special form tools manufactured for your specific component profile, and custom thread gauges made to your drawing. The tooling physically lives in our facility because it only works with our equipment — but legally, it is your asset.

What this means practically: if you decide to move production to another supplier, we will not hold your tooling hostage. You provide a 90-day notice period (to allow for manufacturing transition without disruption to your supply), and we will cooperate fully with the transfer, including providing tooling maintenance records and design documentation to facilitate another manufacturer's use of the die.

Standard cutting tools (carbide inserts, drills, boring bars) used in producing your components are our consumables — absorbed in the per-piece cost, owned by us. Custom fixtures made to hold your component during machining: our ownership unless you specifically request purchase, in which case we sell at cost.

All of the above is documented in our Customer Tooling Agreement, which we sign before any tooling investment begins. If a supplier doesn't offer you this clarity, ask for it in writing before signing anything. A verbal "of course it's yours" is not a commercial agreement.

Drawing format is where engineering professionalism either speeds up your project or creates weeks of back-and-forth. Here's exactly what we need and why each element matters.

Formats we accept: PDF (2D, for review and reference), DWG/DXF (2D AutoCAD, for dimensioned manufacturing use), STEP (3D model — our preferred format and the one we actually machine from), IGES, Parasolid (x_t/x_b), and CATIA V5/V6 natively. We can also work with SolidWorks, Inventor, and CREO native files if needed. A PDF drawing alone without a 3D model is technically sufficient but creates interpretation risk at complex features — we always prefer STEP + PDF together.

What must be on the drawing: Title block with part number, revision level, and date. Material specification by alloy designation (e.g., CW617N to BS EN 12165), not just "brass." Thread callouts with standard (e.g., G½ A to ISO 228, or ½-14 NPT to ASME B1.20.1). Surface finish callout (Ra value per ISO 1302). All critical dimensions identified as KPCs — these drive our inspection frequency and SPC monitoring. General tolerance block (we work to ISO 2768-m as default unless your title block states otherwise). Third-angle or first-angle projection called out clearly.

What creates problems: undimensioned "artistic" 3D models with no tolerances. Drawings that say "same as sample" without a drawing. Thread callouts that say "BSP ½ inch" without specifying parallel or taper (BSPP or BSPT). We'll always ask before assuming — but asking adds time.

DFM is the stage where we earn our keep as a technical manufacturing partner rather than just executing drawings. Most buyers who come to us with a first drawing have designed for function first — which is correct — but haven't considered how manufacturing constraints affect cost, lead time, and consistency.

Our DFM process: within 5 working days of receiving your drawing, we return a written DFM report that covers three areas. Feasibility flags: features we cannot produce on our equipment as drawn (e.g., an internal undercut that can't be machined without a special tool, a wall thickness that will collapse under forging pressure, a thread form that requires a non-standard gauge). Cost drivers: features that significantly increase machining time without adding functional value — deep small-diameter bores, unnecessary chamfers that require tool changes, surface finish requirements tighter than needed. For each cost driver, we suggest an alternative that achieves the same function. Quality risks: features that are likely to produce measurement variation or be difficult to inspect consistently — for example, a critical dimension in a difficult-to-access location.

The DFM report is not a negotiation to weaken your spec — it's a dialogue to make the spec manufacturable. You retain the right to override any DFM suggestion. We've had customers override DFM feedback for good engineering reasons. We've also seen customers save 20–30% on unit cost by accepting a DFM recommendation that replaced a complex feature with a simpler equivalent that worked identically in the field. Either outcome is the right one if it's deliberate and informed.

Timeline transparency is something I insist on with every OEM customer. Underquoting timelines to win business and then missing them is a fast route to losing the relationship — and it's endemic in the precision machining industry. Here's our honest schedule.

CNC machined from existing bar stock, no new tooling: First article (30 pieces) in 3–4 weeks from approved drawing. This covers programming, fixture design, trial runs, and first article inspection. CNC machined with one or two new form tools or special taps: Add 1–2 weeks for tool procurement. 4–6 weeks total. CNC machined requiring complex custom fixtures: Add 2–3 weeks for fixture design and manufacture. 6–8 weeks total. Forged component (new die required): Die design and manufacture takes 5–7 weeks for a single-cavity die. Add 2 weeks for trial forging, finishing machining setup, and first article inspection. 8–10 weeks total, sometimes up to 12 for complex geometries.

The clock starts on approved drawing — not on the day you send us a drawing for review. Changes requested after DFM approval reset the tooling clock to the extent of the change. This is why DFM review upfront saves time overall even though it feels like a delay at the start.

First article quantities: we typically produce 30–50 first article pieces. Enough for you to conduct functional testing, send to your end customer for approval, and keep a reference set. If your qualification process requires a specific quantity, tell us at the RFQ stage.

Yes — and early involvement typically produces better components at lower cost than handing us a completed drawing from an engineering team that's never considered manufacturing constraints.

What early-stage support looks like: once we understand your functional requirement (what the component needs to do, what it connects to, what loads it carries, what fluid environment it lives in), we can provide application engineering input on material selection, propose a component geometry based on similar successful designs in our portfolio, flag known failure modes in similar applications and how the design can avoid them, and provide indicative cost and lead time at the concept stage so you can assess commercial viability before investing in detailed design.

We've supported product development teams from concept through first article in sectors including: residential heating controls (thermostatic valve bodies), commercial refrigeration (manifold blocks for refrigerant distribution), industrial automation (pneumatic valve manifolds), water meters (precision metering bodies with certified materials), and marine engine cooling (copper-alloy heat exchanger fittings).

NDA: we sign an NDA before any design discussion involving your proprietary requirements. Standard is a mutual NDA protecting both parties; we can also sign your company-standard NDA if it's commercially reasonable. We don't ask you to share competitive intelligence — we work within what you need to share.

How to start: send a brief functional description, key dimensions (even approximate), and your target annual volume. That's enough for an initial scoping call. We don't charge for early-stage engineering discussions — the value exchange is clear if the project reaches production.

Partly — and I'll be precise about what we do in-house versus what we source and assemble, because the distinction matters for your supply chain design.

What we manufacture in-house: All brass, copper, and aluminium metal components. PTFE machined parts — we CNC-machine PTFE seats, balls, discs, and custom PTFE components on dedicated non-contaminating machines. Machined nylon, acetal (Delrin), and PEEK components as part of an assembly. Metal spring components in stainless steel (sourced from a specialist coil spring manufacturer in Jamnagar and assembled).

What we source and assemble but don't manufacture: Elastomeric O-rings and seals (NBR, EPDM, FKM/Viton, silicone). We purchase these from established rubber manufacturers with full material traceability, test incoming batches against material specification (Shore hardness, compression set), and incorporate them into assemblies. Compressed fibre and PTFE gaskets — sourced and assembled. Stainless steel or brass springs — sourced and assembled.

The commercial benefit for you: for a valve or fitting assembly that includes a brass body + PTFE seat + O-ring + spring, we can deliver the complete, assembled, tested, and labelled component. One PO. One CoC. One quality responsibility. The alternative — buying components from five suppliers and assembling in-house — carries your team's time and quality risk. Our assembly capabilities include torque-controlled fastening, leak testing of completed assemblies, and sampling of compression set and seal integrity.

Yes — and private-label or OEM marking is something we do routinely for customers who need finished components to carry their own brand identity.

Engraved markings (CNC or laser): Part numbers, revision codes, material designations, and logos can be CNC-engraved into the machined surface or laser-marked post-machining. CNC engraving is permanent and wear-resistant — appropriate for components that will be handled or installed repeatedly. Laser marking is faster for high volumes and allows finer detail, but is shallower. Both are traceable and cannot be removed without defacing the component. Stamped markings (die stamp): For high-volume forged components, brand identification can be stamped into the die itself — meaning every forged piece carries the marking at no additional per-piece cost once the die is cut. Pad printing and labelling: For smooth-surface components where engraving isn't appropriate (e.g., polished valve handles), we can pad-print or apply adhesive labels. Less permanent, typically used for catalogue identification rather than permanent product marking.

Certification marking: if your marking includes regulatory symbols (CE mark, WRAS mark, NSF mark), we include these only on products that genuinely hold the relevant certification for that exact product specification. We don't apply certification marks as branding — that's misrepresentation of conformity and creates regulatory liability for you.

All marking specifications are agreed in writing before tooling — part number format, font, depth, location, and any protected brand marks — and confirmed on the first article.

FAI is standard on every new component we produce, whether the customer explicitly requires it or not. Shipping parts without a documented first article check is production gambling — and we don't gamble with our customers' product launches.

Our standard FAI report contains: a balloon-numbered copy of the customer drawing with every dimension identified. A full dimensional measurement result against each balloon number — measured value, nominal, tolerance, and pass/fail. Measurement method noted for each dimension (CMM, micrometer, thread gauge, profilometer, etc.). Material verification — XRF result confirming alloy composition against specification. Surface finish measurement result (Ra value vs specification). Thread form verification — Go/No-Go gauge result for all threaded features. Visual inspection result and any surface anomalies noted with photos. Pressure test result if applicable. Signature of QC inspector and date. Reference to the production lot from which the first article pieces were drawn.

FAI sample size: 3–5 pieces fully measured for standard components. For critical applications (medical devices, safety valves), we measure 10–30 pieces and provide a mini-Cpk study on critical dimensions to demonstrate process capability from the first production run.

FAI approval cycle: we send the FAI report with the first article samples. You have two paths: unconditional approval (proceed to production), conditional approval with deviation (we note the agreed deviation in writing), or rejection with redline (we implement the change and redo the FAI). We don't proceed to full production without written FAI approval — ever.

Intellectual property protection is a legitimate concern when you're sharing engineering drawings, product concepts, and competitive specifications with a manufacturer. Let me tell you exactly how we handle it — not with general assurances but with specific commitments.

We sign NDAs before any design discussion that involves proprietary information. We work with both our own standard mutual NDA (5-year duration, governed by Indian law, ICC arbitration clause) and customer-standard NDAs — if your legal team has a preferred template that is commercially reasonable, we'll sign it. We've signed NDAs governed by German, UK, Australian, and US law for customers who require it.

Technical controls: your drawings and specifications are maintained in a segregated section of our ERP system accessible only to personnel assigned to your account. We maintain a drawing register that shows every person who has accessed your documentation. We do not share customer drawings with competitors, and we don't manufacture products to your specification for other customers. If we see a similar requirement from another buyer, we treat it as a separate development — we don't reuse your design.

Physical security: the machining area for OEM custom parts is access-controlled. Visitors to the facility (including other customers) don't have access to the OEM machining bay. This isn't theatre — it's a genuine operational separation that prevents inadvertent disclosure.

One honest boundary: we can't guarantee that a competitor will never independently develop a similar product. What we guarantee is that the similarity won't come from information you shared with us. The distinction matters legally and practically.

Yes — white-label and private-brand supply is a significant part of our business, and we treat it with the same operational discipline as branded manufacturing. Let me explain how the arrangement works in practice.

White-label supply typically means: we manufacture the component to your specification (or our standard with modifications), we apply your brand name, part numbers, and any required marking, and the product goes to market under your brand without Brassland's name visible. Your customers see your brand; we provide the manufacturing backbone behind it.

What we require: a written supply agreement that defines product specification, quality requirements, minimum annual volumes, pricing structure, and exclusivity terms (if applicable). For exclusively branded products — products we only make for you and won't supply to others in your market — we typically require a minimum annual commitment that justifies the exclusivity. Market exclusivity protects your commercial position; volume commitment protects our manufacturing planning.

What we don't do: white-label a product that carries certification marks (WRAS, NSF, CE) that weren't obtained for that specific product in your brand's name. If you need WRAS-approved product sold under your brand name, the WRAS approval must be in your name and we manufacture to that approved specification. We support the certification application process, but the approval must be correctly attributed. Misattributing certification marks is a regulatory violation — not a commercial grey area.

Lead time for establishing a white-label relationship: typically 8–12 weeks from signed agreement to first delivery, allowing for specification alignment, sample production, and approval.

New product development is genuinely where a partnership with a manufacturer adds the most value — and the least value is added when you show up with a finished engineering model and say "can you quote this?"

Here's how we prefer to work: at the concept stage, share your functional brief — what the fitting needs to do, what it connects to, what the operating parameters are, and what your target cost is. We'll come back with a geometry proposal and material recommendation based on similar successful products in our portfolio, a rough cost range at two or three volume levels, and any regulatory flags (certification requirements for your target market). This initial response costs you nothing and saves you from investing in a design that's expensive to manufacture or can't pass the required certification.

At the design stage, we run parallel tracks: your engineering team refines the functional design while our manufacturing engineers do DFM review. We converge on a drawing that's both functionally correct and manufacturable. This parallel process typically cuts 30–40% off the timeline compared to the sequential "design, send to manufacturer, get DFM feedback, redesign" cycle.

At the first article stage, we produce and test, you validate. If your product needs regulatory testing (WRAS, NSF, WaterMark), we can coordinate with the test laboratory and provide the test samples and supporting technical documentation.

We've taken products from brief to certified first article in 16 weeks for simple components and 32–40 weeks for complex valve assemblies requiring certification. The range is real — complexity and certification requirements drive the timeline more than manufacturing does.