Automotive to marine, industrial equipment to oil & gas — these are the parts buyers bring us most often, organised by industry. If you recognise a part here, we've made something similar and can quote yours within 12 hours from your drawing, sketch or worn sample.
Custom turbo housings, wheel spacers, engine brackets, clutch components and performance parts made to drawing or sample.
View parts →Custom valve bodies, housings, motor mounts, manifold blocks and structural plates for machinery and production equipment.
View parts →Custom precision shafts, spur gears, shaft couplings and threaded brass fittings — turned and milled to your specification.
View parts →Custom billet brackets, triple clamps, engine mounts, axle spacers and powersport parts made to drawing or reverse-engineered from your sample.
View parts →Custom marine shafts, propeller hubs, stainless deck fittings, pump parts and seawater-resistant components in 316L and bronze.
View parts →Custom valve bodies, flanges, manifold blocks and downhole components in 4140 steel, 316L stainless and Inconel — made to API or custom spec.
View parts →Custom replacement parts for discontinued models — brackets, bushings, trim clips, steering components reproduced from your worn original with no OEM drawing needed.
View parts →Every industry below has a supply channel that works well for standard components. If your part carries a standard code, buy it — a stocked item is cheaper and usually better than anything reproduced one-off. Custom machining earns its cost in one situation: the part only ever existed inside your machine, your model or your build, and nobody lists it. The same holds for a product you are developing yourself — the housings, control panel and cooling fittings that make up a custom solar energy storage system exist only inside your design.
The table separates the two. It is worth reading before you send a drawing, because the fastest quote we can give is sometimes "buy the catalogue part, it fits".
| Part & industry | In the catalogue? | At EKINSUN |
|---|---|---|
| Rolling bearings, lip seals, belts, chains, standard DIN/ISO fasteners — every industry | Stocked | We don't remake these. A branded bearing costs less and outlasts any reproduction — the ISO code is stamped on the ring |
| Wheel spacers in common PCDs (5×112, 5×120, 5×114.3), 10–25 mm — automotive | Stocked by many suppliers | Buy the stock item. We machine the odd ones: a PCD nobody lists, a hub bore turned to your hub, or a thickness between the steps |
| A4/316 deck fittings and standard rigging hardware — marine | Stocked at chandlers | Buy them there. Our half of marine work is the shaft, hub, pump and seawater-side part that was never a catalogue line |
| ASME B16.5 flanges in standard classes and bores — oil & gas | Stocked | Buy the standard class. We machine the non-standard bore, the transition piece and the manifold block that sits between them |
| Turbo housing, intake manifold or engine bracket for a discontinued variant — automotive & motorsport | No | Cut from billet 6061, 7075 or 4140 to your worn original, a sketch or a photo — no OEM drawing needed |
| Feed nuts, tie bars, cams, gears for a machine whose builder has closed — industrial equipment | Never — it only ever carried a builder's part number | Reverse-engineered from the worn part plus the bore it sits in, MOQ 1. See packaging machine change parts and replacement machine parts |
| Propeller-shaft parts, pump components and bushings in 316L or aluminium bronze, non-standard length — marine | Not in these lengths | Turned to your dimension in 316L, 304 or bronze, single pieces included |
| Thread adapters in size/material combinations nobody stocks — oil & gas, hydraulics | Common brass and 304 sizes are stocked; the rest are not | If your BSP↔NPT pair is a standard one, buy it — see BSP to NPT adapters. We machine the combinations that aren't listed: 4140, large bores, mixed thread pairs |
| Trim clips, brackets, bushings and steering parts for out-of-production models — classic car restoration | Discontinued | Reproduced from your worn original, a fragment or a photograph — see obsolete & discontinued parts |
Ask before you raise a purchase order. Tell us the part and the machine it belongs to, and if it turns out to be a stock line we will say so. Nobody benefits from a machining quote for something a distributor has on a shelf.
The machining is the same everywhere; what differs is which property is allowed to fail last. That single question decides the material and the finish, and it is the fastest way to sanity-check a spec before it becomes a quote.
| Industry | What usually drives the spec | Where we normally land |
|---|---|---|
| Automotive & motorsport | Weight and rotating mass, then heat near the turbo and exhaust side | Aluminium 6061 for brackets and spacers, 7075 where the section has to stay thin, steel where a thread carries the load |
| Industrial equipment | Drop-in fit — the line restarts or it doesn't | Whatever the original was, matched on interfaces first. C45 and 4140 for shafts and cams, bronze for wear faces, POM and nylon for guides |
| Marine & offshore | Standing seawater and galvanic pairing, not peak strength | 316L rather than 304 anywhere salt sits; aluminium bronze for shaft and pump work. 304 in a splash zone is a warranty claim waiting to happen |
| Oil & gas | Pressure rating and documentation, checked before geometry | 4140 and 316L to your stated spec. Where a part needs certified material, we say up front what our partner facility can and cannot certify |
| Motorcycle & powersports | One-off or small-batch, cosmetics visible on the bike | 6061 or 7075 billet, anodised. Single pieces are normal here |
| Classic car restoration | Nothing survives except the worn part itself | Match the original material unless it is what failed; interfaces held, finish matched to the era rather than to a modern catalogue |
Quantity moves the price far more than the industry does. Setup is paid once, so a second identical piece costs a fraction of the first — worth knowing before you order a single spare for a machine that will need another one in two years. Send a drawing, a dimensioned sketch or the part itself; the routes are set out on ordering without CAD and parts from a hand drawing.
On branded parts: what we supply is a compatible component built to fit your application. It is not an original-brand product, carries no third-party trademarks, and implies no affiliation with the original maker.
Yes — most of our work arrives that way. For a quote we need far less than for production: photographs with a rule or caliper in shot, the rough overall size, and what the part has to fit. Precise geometry comes later and is our job, not yours. If the part is worn or in pieces there is a right way to capture it before it goes in a box, and that method is set out step by step on replacement machine parts — read it before you dismantle anything, because some of the information stops existing once the assembly is open.
One piece. A single replacement shaft, one bracket, one adapter — all normal orders here. Per-piece cost falls as quantity rises because setup is shared, so we quote price breaks alongside the single-piece price and you decide where to sit. There is no minimum-value threshold you have to reach before we will quote.
Automotive and motorsport, industrial equipment and machinery, marine and offshore, oil and gas, motorcycle and powersports, classic car restoration, plus precision shafts, gears and fittings that cut across all of them. The industry matters less than the part: if it is a machined metal or plastic component that has to fit something you already own, it is in scope. Each section on this page shows real parts we have produced in that field.
No — and we will tell you when a standard part is what you need. Bearings, seals, belts, chains and standard DIN/ISO fasteners are stocked worldwide at prices no one-off reproduction can match. Custom machining is the right answer when the part carries only a builder's number, is out of production, or falls outside the sizes and materials anyone lists. That boundary is set out in the table above.
Quotes for non-medical parts go back within 12 hours; medical components take up to 48 hours because they route through additional review. Drawings, samples and photographs you send are used only to quote and produce your parts — we can sign your NDA before you send anything, and our standard confidentiality terms are on the NDA page.
Turbo housings, impellers, wheel spacers, clutch parts, engine and intake components. Good for low-volume performance and replacement parts.
Spacers thick enough to carry their own studs. Once studs are pressed into a spacer it stops being a shim and becomes part of the wheel mounting: those studs have to hold the wheel on by themselves, so the press fit is doing the job the hub used to do.
Clutch and flywheel components with a toothed ring. The starter pinion meets the flywheel on those teeth, while the clutch face on the other side has to run true to the crankshaft flange — two features that have to be machined in relation to each other, not separately.
A steel flywheel. Its job is stored rotating inertia, and material taken off near the outer diameter changes engine response far more than the same weight removed near the centre — which is why balance and friction-face flatness are the whole part.
An aluminium four-cylinder block. Everything is referenced back to the crank axis — bore centres, deck face, main saddles — and because aluminium expands roughly twice as much as the steel fastenings running through it, that stack has to hold together hot as well as cold.
Aluminum housings, valve bodies, brackets, motor clamps, cooling plates, panels, tooling and workshop/QC references.
Gold anodised aluminium. The colour is dye held in the pores of the oxide layer rather than a paint film sitting on top, so the shade can shift a little between batches and a deep scratch shows as bare metal instead of as a chipped coating.
An aluminium bracket carrying a ball screw. A screw is normally held at one end and left free to move at the other, because it grows in length as it warms up — the bracket at the fixed end is the one that takes the thrust.
An aluminium bracket with features on several faces. A bracket is defined by the two things it bolts to, not by its own outline: two hole patterns fixed by other people's parts, and the job is holding the distance and the angle between them.
An aluminium cooling plate with a milled coolant channel. The channel is machined open and then has to be closed again by a cover, so the sealing joint, rather than the milling, is usually what decides whether the finished plate leaks.
Shafts, keyways, brass fittings, threaded couplings, gear discs, tool holders and similar turned or milled precision parts.
An aluminium gear and shaft assembly. Aluminium is chosen for low rotating mass rather than for tooth strength, so a set like this belongs where inertia and weight matter and the torque going through the mesh is modest.
A turned stainless spacer. A spacer has one job — hold a set distance — so its two end faces have to be parallel; when they are not, it tilts whatever sits on it and the bolt running through it is loaded in bending.
A sample box of small brass turned parts: hose tails, bushes, rings and knurled inserts. The knurl on an insert is the working feature — it is what bites when the insert is pressed or heat-set into plastic, and what stops it spinning afterwards.
A one-off brass threaded fitting. Adapters exist because two thread standards meet in the same line, and brass is the usual answer: it cuts cleanly enough to hold a thread profile in single pieces and does not rust in water or air service.
Packing, tray, foam protection, and inspection photos showing how parts are prepared for overseas delivery.
A stainless disc-pack shaft coupling. The bolts alternate around the circle, one to each hub, so torque travels through the thin discs from one bolt to the next — and those same discs flex enough to swallow a small misalignment without anything sliding on anything.
Tab, tooth, wave and spring washers together. They lock in different ways: a tab is bent up against a flat, a toothed washer bites into the face it is pressed against, and a wave washer only keeps tension as the joint settles — so one is not a substitute for another.
Castle and slotted nuts in several forms. On a hex castle nut the slots line up with a cross hole so a split pin can lock it; on a round nut the same slots are what a hook spanner and a tab washer grip.
A gearbox housing part-way through machining on a five-axis centre. Housings are the classic case for it: bearing bores sit on different faces but share one axis, and cutting them in a single clamping is what keeps them lined up.
Most EKINSUN projects start from a customer drawing, sample, old part or rough sketch. These photos help explain the type of machining and finishing we can quote.
Upload SketchSend a drawing, sketch, sample or photo — reply within 12 hours. MOQ 1.