Quote by confirmed dimensions
Size notation and critical fit dimensions are checked before commercial approval.
Authorized product photography available
PRODUCT PHOTO
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Specification-led quotationNo placeholder price is treated as an order-ready offer.
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Replacement matching supportReference brands identify geometry; compatibility is confirmed.
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Inspection by agreementRequired checks and documents are stated in the quotation.
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International shipment coordinationCourier, air or sea freight is quoted to destination.
PRODUCT OVERVIEW
Product identification and RFQ basis
The website supports identification and inquiry. The written quotation, approved drawing or approved sample controls the order.
Blue 65Mn rectangular-wire die springs — TL / SWL light load. For injection molds, stamping dies, fixtures and general industrial compression. Send the size and we will review it for quotation; if you are replacing a spring in an existing tool, send the old one's dimensions and we will match it.
Read the colour code before you order
These springs follow the JIS-style colour system, not ISO 10243. The two systems assign different loads to the same colours, and this catches people out.
| Colour | Code | Load class (this system) | Max compression (300,000 cycles) | Max compression (1,000,000 cycles) |
|---|---|---|---|---|
| Yellow | TF / SWF | Extra light | 50% of free length | 40% of free length |
| Blue | TL / SWL | Light | 40% of free length | 32% of free length |
Under ISO 10243, blue means medium load. Under this system, blue means light. If your drawing calls out an ISO blue spring, this is not a drop-in equivalent — tell us the load you actually need and we will point you to the right one.
Maximum compression depends on the life you need
Published maximum-compression figures are always tied to a cycle count, and confusing the two is the most common reason die springs fail early. The widely quoted 40% for blue TL / SWL is the figure for around 300,000 cycles. For a tool that has to run a million cycles it drops to about 32%. Yellow TF / SWF follows the same pattern: roughly 50% at 300,000 cycles, about 40% at one million.
If you are designing a long-run production tool, size against the one-million-cycle figure and treat the 300,000-cycle number as a short-life limit, not as headroom. A spring that comes out of the tool shorter than its original free length has already been over-compressed and will not recover.
Maximum compression load by outside diameter
Blue TL / SWL, at 40% compression — the 300,000-cycle basis described above. Note that these values depend on outside diameter only: a longer spring of the same OD has the same maximum load.
| OD (mm) | ID (mm) | Max load (kgf) | Max load (N) | Max load (lbf) |
|---|---|---|---|---|
| 6 | 3 | 6.4 | 63 | 14.1 |
| 8 | 4 | 8.0 | 78 | 17.6 |
| 10 | 5 | 11.2 | 110 | 24.7 |
| 12 | 6 | 16.8 | 165 | 37.0 |
| 14 | 7 | 22.4 | 220 | 49.4 |
| 16 | 8 | 28.0 | 275 | 61.7 |
| 18 | 9 | 34.4 | 337 | 75.8 |
| 20 | 10 | 43.2 | 424 | 95.2 |
| 22 | 11 | 53.6 | 526 | 118.2 |
| 25 | 12.5 | 67.2 | 659 | 148.1 |
| 27 | 13.5 | 80.0 | 785 | 176.4 |
| 30 | 15 | 96.8 | 949 | 213.4 |
| 35 | 17.5 | 132.0 | 1294 | 291.0 |
| 40 | 20 | 172.8 | 1695 | 380.9 |
| 50 | 25 | 270.4 | 2652 | 596.1 |
| 60 | 30 | 388.8 | 3813 | 857.1 |
These are maximum (limit) values. For a working design, size the spring so normal operating compression stays well below the limit — running at the limit shortens fatigue life sharply.
Need a different load?
Yellow (TF / SWF) is the lighter option in this range. If you need medium, heavy or extra-heavy classes, ask — we will confirm availability and quote them alongside.
What to send us
| OD | Outside diameter — this sets the load class |
| L₀ | Free length |
| Working stroke | Normal operating compression, not the maximum |
| Required load | Load needed at that compression, if you know it |
| Cycle life | Expected cycles — this decides which compression limit applies |
| Quantity | Required — drives both unit price and freight |
Replacing an existing spring? The old spring's OD, free length and colour are usually enough. Send a photo with a caliper if you are unsure.
Material and documentation
Supplied in 65Mn spring steel. Material certificates and inspection reports can be provided with your order — tell us what your quality system requires and we will confirm the scope, and any cost, in the quotation.
Your drawings stay confidential
Technical files are used to evaluate and fulfill your inquiry or order. They may be shared only with relevant manufacturing, inspection, logistics or service partners as needed. Send only files you are authorized to share. See our Privacy Policy. NDA available on request from rfq@privleymold.com.
Not sure which load class you need? Email rfq@privleymold.com with your application and we will help you size it — no obligation to order.
Material and treatment stated
The quotation records confirmed material, heat treatment and surface basis.
Replacement review
Existing references are checked against controlling dimensions and function.
Documents by quotation
Material, hardness or dimensional records are included only when available.
TECHNICAL DATA
Current specification basis
Blank fields remain pending and are not filled by assumption.
- Part number
- PMC-SPR-65MN-B
- Standard / series
- Blue Rectangular-Wire Die Spring
- Material
- 65Mn spring steel
- Dimensions / notation
- RFQ dimensions required: outside diameter OD, inside diameter ID, free length L0, rectangular wire section a × b, working stroke, required load, and quantity. Color must not be assumed to equal a universal international load class.
SELECTION GUIDE
Build the RFQ around the part that must fit
There is no automatic configurator until supplier-verified combinations are loaded.
State every controlling size
Use the drawing notation or attach a marked drawing. Include tolerances where fit is critical.
Specify the required basis
Provide grade, accepted equivalent, heat treatment, hardness and finish.
Identify the existing component
Include brand reference, old part number, mating component and measured dimensions.
Define the buying condition
Quantity, destination, date, packaging, inspection and freight determine the quote.
APPLICATION & VISUAL EVIDENCE
Show where and how the component is used
Application photographs are displayed only when supplied with permission.
APPLICATION IMAGE PENDINGNo unauthorized factory or installed-part photograph is used.
This product may be reviewed for injection-mold, die-casting-mold or related tooling applications according to its family. Suitability must be confirmed from the buyer's requirement.
DOWNLOADS & FILES
Use structured files to reduce quotation errors
Only files actually available on the website are listed.
REQUEST A WRITTEN QUOTATION
Tell us exactly what must be supplied
A complete inquiry gives engineering, sourcing and purchasing the same reference.
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Part number, standard or drawing revision
✓
Dimensions, tolerances and mating information
✓
Material, treatment, hardness and finish
✓
Quantity, destination and required date
✓
Inspection, packaging and freight requirements
Files cannot be attached to this form.
Email authorized drawings, product photos or BOM files to sales@privleymold.com.
PRODUCT RFQPMC-SPR-65MN-B
WHY PRIVLEY MOLD COMPONENTS
A transparent international sourcing and quotation process
Hong Kong business operator
The legal trading company and contact details are stated clearly.
One contact for mixed BOMs
Standard, replacement and drawing-based requirements can be reviewed together.
Written specification basis
The quotation identifies confirmed and unresolved technical points.
Commercial terms before payment
Currency, validity, lead time, freight, inspection and payment terms are written.
PRIVLEY (HONG KONG) GLOBAL COMMERCE LIMITEDCompany No. 80820828 · BR No. 80820828-000-07-26-8
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IMPORT & DOCUMENTATION BASIS
US and European quotation checkpoints
These checkpoints reduce ambiguity before a formal quotation becomes an order. Exact responsibilities are set by the written quotation, delivery term, PI and final shipping documents.
Origin and import documents
Country-of-origin information and marking requirements are reviewed for the final item and packing as applicable. We do not publish a generic tariff rate or promise a fixed import duty on the product page.
Importer and customs data
Where the importer or customs process requires an EORI or other identifier, the buyer or importer can provide it later in the order or shipping workflow. The initial web RFQ should not contain unnecessary sensitive identifiers.
Final item basis
HS classification is reviewed against the final shipped product and declared on shipping documents where applicable. The quotation is not a binding customs classification or tax determination.
Document-backed requests only
Material certificates, inspection reports, origin statements and product-specific regulatory information are confirmed only when applicable and supported for the quoted item. No blanket CE, RoHS or REACH certification is implied.
Buyer review point
Before payment, confirm the offered specification, quantity, unit system, destination, delivery basis, requested documents, tax or duty assumptions and beneficiary details on the written quotation and formal PI.
COMMERCIAL ORDER TERMS
International RFQ order basis
Product pricing, freight, import charges, payment route and delivery responsibilities are confirmed in the formal written quotation before an order is approved.
Product, specification, quantity, inspection, packaging and commercial basis are stated before approval.
Multiple products, drawings or specifications can be reviewed together when practical.
An RFQ becomes an order only after the written quotation, specification and payment basis are accepted.
Freight, duties, taxes, customs clearance and destination charges are stated or allocated before approval.
Delivery basis
A quotation may use FCA China, DAP or another expressly stated term. Under DAP, import clearance, duties, taxes, brokerage and destination charges are normally paid by the buyer or consignee.
DDP requests
DDP is not the default. It applies only when the formal quotation expressly states DDP, identifies the destination and lists the included cost scope.
United States and other destinations
Freight is calculated from packed weight and dimensions, destination or postal code, route, carrier and service level. No free-shipping or fixed-duty assumption is made.
PAYMENT AFTER QUOTATION APPROVALVerified business payment routes
Payment instructions are issued only after the specification, quotation and formal PI have been reviewed.
PayPal may be offered for an approved quotation. The payer should verify the company and order reference before authorizing payment.
A verified company receiving account may be used only when the exact beneficiary and currency-specific receiving details are stated on the formal PI. Account details are not published openly.
Never redirect payment based only on an email or messaging-app request. Reconfirm any change through the contact details published on this website.
Anti-fraud payment rule
PRIVLEY (HONG KONG) GLOBAL COMMERCE LIMITED does not instruct business customers to send company order funds to an unverified personal account. The legal company name, currency, amount, quotation reference and beneficiary details must match the formal PI.
PREPARE A COMPLETE INQUIRY
Download the RFQ / BOM template
Open the CSV in Excel, enter one product or drawing item per line, and email the completed file with your drawings. A structured inquiry helps us quote the correct specification, inspection scope, freight basis and delivery requirement.
Download RFQ Template (.CSV)
Email completed file and drawings →
CSV opens in Microsoft Excel, Google Sheets and most spreadsheet applications.