Custom Made Marine Stainless + Aluminum Parts

Precision custom marine parts in stainless and aluminum—built for corrosion resistance, clean cosmetics, and repeatable production. From prototypes to first articles to volume runs, we help you launch (and keep shipping) without supplier fire drills.  Product Design That Matches Your Process

Built for the marine environment

Saltwater doesn’t forgive. We build with marine-appropriate alloys and finishes so parts look right, fit right, and hold up season after season. 

Prototype to production-ready

Launching something new or replacing a drifting supplier? We lock critical features early, validate with first articles, and maintain consistency through production runs. 

Materials matched to the job

Common materials include 316/304 stainless and 6061-T6 / 6063-T6 aluminum. If you’re unsure, we’ll recommend the right option based on environment, loads, cosmetics, and cost targets. 

Finish-ready + cosmetic consistency

Finishing is where marine parts either win or fail. We support coating/anodizing/paint systems with process control to keep cosmetic results consistent run after run. 

Quality that protects your brand

We use PMI (Positive Material Identification) testing to verify alloy chemistry and maintain chain-of-custody through manufacturing—so specs stay specs. 

Inputs and deliverables

What you can send us (any of these work)

  • CAD files, drawings, or a spec sheet

  • A reference part/sample (even if it’s “close but not right”)

  • Target quantity + cadence (one-off, pilot run, production)

  • Material preference (or tell us the environment + load requirements)

  • Finish requirement (polished, anodized, powder coat, paint, etc.) 

What you get back

  • A clear quote and lead time

  • DFM / risk flags (before you cut metal)

  • Prototype and/or first article validation

  • Production-ready repeatability and controlled finishing

  • Material verification support when required 

Simple workflow

  1. Send your drawing (or rough idea)

  2. Review + DFM (we flag risks early)

  3. Prototype / first article (lock in critical features)

  4. Production runs + finishing (keep cosmetics consistent)

  5. QC + delivery (stable supply, fewer surprises) 

What we make (examples)

Custom marine parts commonly include components like brackets, hinges, handrails, tie-down hardware, intakes, stanchions, levers, and other stainless/aluminum assemblies where fit + finish matter. (See the gallery for real examples.) 

Add a button here: “View Custom Parts Gallery” → link to /custom-parts-gallery 

Who we support

  • Boat builders & marine OEMs (center console, sportfish, wake/surf, pontoon, specialty)

  • Marine accessory brands needing consistent corrosion-ready components

  • Custom + standard programs—from one-off solutions to repeat production 

Social proof (short)

What customers say:

  • “We switched to PW Marine OEM after quality issues with another supplier. It’s been night-and-day—fewer rejects, fewer fire drills.” 

  • “Fast quotes, fast answers, and they actually follow through.” 

(You can add a “Read more” link to /case-studies.) 

CTA section

Get a quote for your custom marine part

Replacing an unreliable supplier—or launching a new part? Send your drawing (or even a rough idea). We’ll quote it, flag risks early, and help you stabilize quality + lead times. 

Before Production Starts

Pre-production is where we prevent expensive surprises. We translate design intent into a buildable plan that delivers consistent stainless and aluminum components for OEM manufacturing.

  • DFM review to improve manufacturability, strength, and cost without changing performance

  • CAD/drawing coordination (critical features, tolerances, revisions, fit points)

  • Prototype / first-article planning to validate form, fit, finish, and function

What to Send Us

Send what you have. If it’s incomplete, that’s fine—we’ll help fill in the gaps and confirm requirements before quoting.

  • CAD or drawing files (STEP preferred; DWG/PDF accepted)

  • Target material (316/304 stainless, 6061/6063 aluminum, or “recommend”)

  • Finish requirements (brushed/polished, anodize, powder coat, passivation, etc.)

  • Critical-to-quality features (CTQs), key interfaces, and any tight tolerances

  • First article qty + estimated annual volume (even a range helps)

  • Target lead time / need-by date and any launch milestones

What You Get From Us

You’ll get clear guidance and a quote that reflects how the part will actually be manufactured—so you can plan production with confidence.

  • DFM feedback (what to adjust, what to keep, and why)

  • Quote with lead time and options when tradeoffs exist

  • First-article plan and approval path (when required)

  • Recommendations on material/finish combinations for marine environments

  • A production-ready approach focused on repeatability and consistency

Our Process

A simple, reliable workflow built for OEM timelines.

  • Review your files, requirements, and application

  • DFM + clarifications to lock in CTQs, fit points, and finishes

  • Quote with lead time and production assumptions clearly stated

  • Prototype / First Article for validation and approval

  • Production readiness: finalize specs, QC points, and packaging/kitting needs

Need Design Support?

If you have a concept, sketch, or an existing part that needs improvement, we can help convert it into a manufacturable design that withstands marine conditions and remains consistent in production.

  • Improve strength without adding cost

  • Reduce weld distortion / simplify assemblies

  • Adjust tolerances for repeatable builds

Stainless & Aluminum Expertise

We commonly work with 316/304 stainless and 6061/6063 aluminum, with finishing options tailored for marine exposure. If you’re unsure what’s best, we’ll recommend the right combination for performance, appearance, and longevity.