CAPABILITIES

A UNIQUE COMBINATION OF AUTOMATION CONSISTENCY AND CREATIVE TEAMS FOR PRECISELY-MACHINED SOLUTIONS

A UNIQUE COMBINATION OF AUTOMATION CONSISTENCY AND CREATIVE TEAMS FOR MANUFACTURABLE SOLUTIONS

Self-tending CNC lathes, quick-change mill workholding, wire EDM and custom solutions allow for consistent and efficient job shop production — especially for repeat batch runs—supported by experienced teams of engineers and production specialists.

RATHBURN

Innovation is part of our heritage.

Creative solutions we’ve developed over time allow us to scale to meet customer demand, enabling us to drive cost efficiencies that can be shared with customers.

RATHBURN

Targeted small solutions up to large scale production

  • Complex precision milled, turned and wire EDM parts
  • Contract machining solutions to meet demanding accuracy and quality goals
  • Flexible Batch Production of 100 – 200,000+ EAU
  • Customers have been with us for 20+ years
RATHBURN

Not a supplier. An agile partner.

We proactively call out ways to solve challenges, so that Rathburn and our customers benefit from the outcomes. We continuously reinvent our role as partners with our customers to improve consistency and reduce waste while delivering the highest quality parts possible.

RATHBURN

Government contract production of CNC precision-machined components.

Rathburn Precision Machining, a division of Three Daughters Corporation, offers contract production of CNC precision-turned and milled components to government prints / specifications. Our focus is the manufacture of high-quality machined components and assemblies, including outsourced processes such as heat treat, passivation and coatings.

RATHBURN /
THREE DAUGHTERS CORP. CAPABILITIES STATEMENT

Corporate Information

CAGE code:

1SRL2

UEI:

SECPR1NJ9M26

DUNS:

#16 751 0833

Primary SIC:

3599 Industrial and Commercial Machinery and Equipment, Not Elsewhere Classified

Primary NAICS:

332721 Precision Turned Production Manufacturing

Other NAICS:

332710 Machine Shops

Primary UNSPSC:

73181000 Machining Services

Other UNSPSC:

73181001 Turning Services

WBE/WOSB certified

CMMC Level 2 (Self)

ISO 9001:2015 quality certified

IATF 16949:2016 quality certified

AS 9100D quality conforming

ITAR registered

Quality & Certifications

Material Traceability

Every material we use is tracked from the time it comes in to the time your parts ship. We keep certifications on file and tied to each job, so if you ever need documentation, it’s there.

First Article Inspection (FAI)

For new parts, we run a full first article before moving into production. That includes sample parts, ballooned drawings, and a detailed inspection report. This lets you confirm everything is right before production starts.

Certified Quality Systems

We run under standards like ISO 9001:2015 and IATF 16949:2016, with processes that meet aerospace and defense requirements. You get clear documentation and consistent results from the first run through production.

Need documentation for your project? Contact our team or request a quote.

Brochure
RATHBURN

Rathburn Precision Machining Brochure

Frequently Asked Questions

Our core capabilities include:

  • CNC horizontal turning
  • CNC vertical milling
  • CNC horizontal turning with live tooling, including Swiss machining
  • Wire EDM

We also offer secondary services including:

  • Assembly
  • Laser marking
  • Management of outside processes including specialty machining, grinding, heat treatment, black oxide, anodizing, e-coat, passivation, sinker EDM and other processes and coatings

We can provide support of new projects with prototype-to-production machining. Much of our work is repeat batch production, where we can scale up or down as customer demand changes month-to-month or year-to-year, with a range of 100 to 200,000 EAU.

Our outside diameter range for turning is 10” maximum for chucker work with length dependent on geometry. Our Swiss small diameter machining goes up to 32mm. Automated bar-fed lathes run up to 3” and gantry lathes process up to 8” diameter. Our envelope for milling is 20 × 20 × 20 inches. Our maximum ideal part weight is 30 lbs but we do process small quantities of larger parts.

Our standard tolerance for machining and measuring is ±0.001” standard with ±0.0005” achievable, depending on the application. Standard finish is 64Ra and 32Ra is achievable; finer finish is available through trusted local grinding sources.

We are able to process:

  • Aluminum
  • Steel (carbon and alloy)
  • Stainless steel (including Nitronic 60 and 4140 PH)
  • Tool steel
  • Cast iron (grey and ductile)
  • Brass
  • Inconel 625
  • Monel 400
  • Delrin
    •  

We work from bar stock, tubing, plate, sand castings, die castings, forging and extrusions. We often manage and machine customer-supplied raw materials as well.

Yes. Our engineering team actively works with customers early in the process to identify opportunities to improve part designs for machinability, reduce cost, and solve manufacturing challenges — functioning as an agile partner, not just a supplier.

For example, we have experience helping customers identify and resolve tolerance stack-up between our parts and mating parts. We have also helped other customers with reverse engineering and improving part life through alternative material selections. Where possible, we review part application with the customer and make suggestions as to how machining quality or costing can be improved.

<1%

Internal Scrap Rate

>97%

On-Time Delivery (OTD)

<50

Defective Parts Per Million (DPPM)