Precision Stainless Steel CNC Machining for a US Manufacturer
How Manufyn coordinated the production of 30 threaded hex-head stainless steel components at $0.89 per unit, including DHL shipping, with delivery to Chicago within 7 days.
Illustrative component visual. Not a photograph of the customer’s actual part.
A Small Batch. A Defined Budget. An International Delivery.
A US-based manufacturing company required a small batch of precision-machined stainless steel components manufactured to an engineering drawing.
Manufyn India Private Limited coordinated the manufacturing requirement through its Indian supplier network. The project involved CNC turning and hex milling of 303 stainless steel stock to produce a threaded hex-head fitting.
The requirement was for 30 pieces at a unit cost of $0.89, including DHL shipping. The completed order reached the customer within 7 days.
The customer and application are anonymized in this case study. Chicago is used as the stated customer location for this published version.
Understanding the Component Before Manufacturing
The component combines turned cylindrical surfaces, an external thread, and a hexagonal head. The selected manufacturing route needed to account for these features while maintaining the specified geometry.
| Component description | Threaded hex-head stainless steel fitting |
|---|---|
| Material | 303 stainless steel |
| Raw stock | 5/8 inch hexagonal bar |
| Hex dimension | 0.625 inch across flats |
| External thread | M14 × 1.5 |
| Thread length | 0.090 ± 0.003 inch |
| Cylindrical diameter | Ø 0.394 inch |
| Additional diameter | Ø 0.456 ± 0.002 inch |
| Head dimension | Ø 0.588 ± 0.001 inch |
| O-ring requirement | Not required |
Dimensions are transcribed from the supplied drawing. The approved customer drawing remains the controlling manufacturing specification.
CNC Turning and Hex Milling
The manufacturing route combined turning operations for the cylindrical geometry with milling operations for the hexagonal features. This route was selected around the geometry and specified requirements of the component.
Raw Material Preparation
The specified 303 stainless steel hexagonal stock provided the starting material for the component. Material grade and stock dimensions were considered during manufacturing preparation.
CNC Turning
Turning produced the cylindrical sections, stepped profiles and external threaded geometry. Thread dimensions and transitions between features were important considerations during machining.
Hex Milling and Edge Finishing
Milling operations established the required hexagonal geometry. The component then underwent the specified finishing and edge-breaking operations.
Quality Checks and Dispatch
The batch was prepared for dispatch following production and quality checks. Manufyn coordinated international shipment through DHL Express.
For other components, the appropriate process depends on drawing requirements, stock geometry, tolerance, quantity, machine capability and total landed cost. Learn more in our guide to production CNC machining in India .
Competitive Unit Cost With International Shipping
The project achieved a reported unit cost of $0.89, including shipping, for a batch of 30 components. The total project value was $26.70.
| Commercial Parameter | Project Result |
|---|---|
| Production quantity | 30 pieces |
| Cost per component | $0.89 |
| Total project value | $26.70 |
| Shipping partner | DHL Express |
| Reported delivery timeline | 7 days |
| Customer location used in this version | Chicago, USA |
This project illustrates how coordinated procurement can support low-volume engineering requirements without requiring an overseas buyer to manage every manufacturing activity directly.
Manufacturing Procurement From India for US Buyers
Manufyn India Private Limited supports international manufacturers by connecting engineering requirements with appropriate Indian manufacturing capabilities. Depending on the project, this can include RFQ review, supplier coordination, commercial evaluation, manufacturing follow-up, quality coordination and international shipment planning.
The objective is to help buyers evaluate the complete procurement requirement rather than compare unit prices without considering manufacturing suitability, logistics and delivery commitments.
Explore Manufyn’s India Purchasing Office service to learn how an on-the-ground procurement team can support supplier development and manufacturing coordination.
What to Include in a CNC Machining RFQ
A complete RFQ helps manufacturers evaluate the component more accurately and reduces avoidable clarification during quotation and production.
- Dimensioned engineering drawing with revision number.
- 3D STEP model, where available.
- Exact material grade and material certification requirements.
- Required quantity and expected annual demand.
- Dimensional tolerances and surface finish requirements.
- Thread specifications and relevant inspection criteria.
- Packaging requirements and delivery destination.
- Target delivery date and applicable shipping terms.
For additional engineering guidance, visit the Manufyn Manufacturing Resource Hub for practical guides on machining, materials, tolerances and manufacturing procurement.
Stainless Steel CNC Machining FAQs
Can Manufyn coordinate CNC machining from India for US companies?
Yes. Manufyn supports international manufacturing requirements through supplier coordination, RFQ management, manufacturing follow-up, quality coordination and international shipment planning. The proposed manufacturing route depends on the specific component and its requirements.
Does Manufyn support low-volume CNC machined components?
Manufyn supports small-batch and specialized engineering component requirements, subject to manufacturing capability and commercial feasibility. This case study describes a batch of 30 components.
What is 303 stainless steel used for in CNC machining?
303 stainless steel is a free-machining austenitic stainless steel used for components that benefit from good machinability. Material selection should account for corrosion exposure, mechanical requirements, the operating environment and the customer’s material specification.
What affects the cost of a CNC machined component?
Cost depends on material, stock dimensions, geometry, machining time, setup, quantity, tolerances, finishing, inspection, packaging and shipping. A drawing review is needed to estimate a new component accurately.
What information should I send for a CNC machining quote?
Send a dimensioned drawing, a 3D model where available, material grade, quantity, tolerances, finishing requirements, inspection criteria and delivery destination. Include your target delivery date and annual demand if the requirement is recurring.
Can Manufyn arrange international shipping?
Manufyn can coordinate international shipping as part of suitable procurement projects. Carrier, delivery schedule, shipping terms, customs documentation and any applicable import duties should be confirmed for each shipment.
Looking for a CNC Machining Procurement Partner in India?
Share your engineering drawing, STEP file, material specification and required quantity. Manufyn can review your requirement and coordinate a suitable manufacturing and procurement approach from India.
Manufyn India Private Limited · Manufacturing Procurement · Supplier Coordination · Quality Oversight · Global Delivery