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Applications

Defense-adjacent CNC machined parts we match

The part families buyers send us most often, what each one asks of a CNC supplier and what to put on the drawing so the quote is right the first time. Every RFQ is checked against our export scope before any supplier sees it, and matched with up to 3 suppliers that fit the part.

Overview

Part families at a glance

Typical starting points only. Your drawing, contract flow-downs and export classification decide the real requirements.

Application	Typical parts	Usual materials	Features that drive cost	Typical finish
Structural parts	Brackets, frames, gussets, hinge blocks, fittings	6061-T6, 7075-T651, 4140, 17-4 PH	Thin webs, deep pockets, true position of hole patterns	Type II anodize, chem film, black oxide
Rugged enclosures	Electronics boxes, lids, connector panels, communications chassis	6061-T6, 5083	Seal groove geometry, flatness of mating faces, EMI gasket lands	Chem film on bonding surfaces, paint or powder coat
Mounts and rails	Sensor mounts, accessory rails (non-firearm), vehicle brackets, quick-release plates	7075-T6, 4140, 17-4 PH	Rail profile tolerance, hardened wear faces, repeatability of locating features	Type III hardcoat, black oxide, nitride
Optics housings	Camera housings, lens barrels, window retainers, sensor gimbal parts	6061-T6, 7075-T6, 316L, Ti-6Al-4V	Bore concentricity, thread for retaining rings, light-trap surfaces	Black Type II anodize, bead blast
Ground support and test	GSE housings, test fixtures, adapters, MRO tooling	6061-T6, 4140, D2, POM	Locating accuracy, hardened pins and bushings	Anodize, black oxide, as machined
Training and range	Simulator panels and controls, target mechanism parts	6061-T6, 304, POM, nylon	Cosmetic surfaces, assembly fit	Anodize, powder coat

Structural

Structural brackets and fittings

Brackets and fittings are usually milled from 6061 or 7075 plate, with 4140 or 17-4 PH where loads or wear justify steel. Cost is set by how much material comes out and how thin the webs are: a part that is 85 percent pocket needs a stable fixturing plan and stress-relieved plate to stay flat. Hole patterns that bolt to other structure are usually controlled with true position to a datum frame, so call datums that a supplier can actually locate on.

For fatigue-loaded parts, ask for edge break and surface finish requirements on the drawing, and say if shot peening or a specific temper such as T7351 is required. 7075 vs 6061 for mil-spec parts.

Enclosures

Rugged electronics enclosures

Machined enclosures protect electronics from water, dust, shock and electromagnetic interference. The details that decide pass or fail are flatness of the sealing face, groove dimensions for O-rings or form-in-place gaskets, a conductive chem film on bonding surfaces and masking of those surfaces during paint. Ingress ratings such as IP67 depend on the whole assembly and are verified by the buyer; the supplier machines the features to your drawing.

Enclosure machining: seals, EMI and flatness · RF housings and antenna mounts

Mounts

Mounts, rails and vehicle brackets

Sensor mounts, accessory rails and vehicle brackets need repeatable locating features more than tight overall size. Common choices are 7075 with Type III hardcoat for wear faces, or 4140 quench and tempered with black oxide. State whether rail dimensions apply before or after hardcoat, because Type III grows into the part. Firearm components and fire-control parts are out of scope, whatever the material.

Tactical vehicle brackets and mounts

Optics

Optics and camera housings

Optics housings, lens barrels and window retainers depend on bore concentricity, perpendicularity of seating shoulders and fine threads for retaining rings. They are usually turned and milled from 6061 or 7075 and finished in black Type II anodize to cut stray light; stainless or titanium appear where corrosion or weight require it. Night vision optics and military-grade IR are out of scope; commercial camera and sensor housings outside export control are in scope.

UNJ thread machining and gauging

Ground support

Ground support, test and MRO tooling

Ground support equipment housings, adapters, test fixtures and depot tooling are low-volume, high-mix work. Locating pins, hardened bushings and flat reference faces matter more than cosmetic finish. Tool steel such as D2 or hardened 4140 is used where fixtures see repeated loading. Ground support equipment machining guide.

Training and range

Training simulator and range hardware

Simulator panels, control housings and target mechanism parts often look like industrial work with defense end users. Cosmetic anodize or powder coat, consistent color between lots and assembly fit are usually the main requirements. Machined parts for training simulators.

Drawing checklist

What to put on the RFQ

STEP model and PDF drawing at current revision
Material spec with temper, for example 7075-T7351 per AMS-QQ-A-250/12
Finish spec with class and color, and whether dimensions apply after finish
Marking requirements (part number, CAGE, UID if any) and method
FAI, mill certificate and certificate of conformance requirements
DFARS or other flow-downs that affect material source
Export classification of the part, confirmed by your compliance officer

Full RFQ drawing package checklist

Out of scope

Applications we do not take

Firearm components (receivers, barrels, fire control)
Munitions, ordnance, explosives hardware
Missile / rocket airframe structural parts
Night vision optics / military-grade IR
Encryption hardware
Anything ITAR / USML controlled
Anything Wassenaar dual-use restricted without a licence
End-user-restricted destinations

Read the export compliance policy. Background on the US Munitions List: 22 CFR Part 121 (eCFR).

Materials

Aluminum, steels, titanium, copper alloys and plastics with AMS, ASTM and UNS designations.

Capabilities

Tolerance range routed, mil-spec finishes and the full in-scope list.

Quality

FAI, CMM reports, mill certificates and record retention.

FAQ

Application questions

Which applications are in scope?

Commercial-grade and dual-use components whose drawings are outside ITAR / USML control: ground support equipment housings and brackets, rugged electronics enclosures, communications chassis, non-firearm mounts and rails, optics and camera housings, training simulator hardware, range and target components and non-controlled UAV structural parts.

Which applications are out of scope?

Firearm components, munitions and ordnance hardware, missile or rocket airframe parts, night vision and military IR, encryption hardware, anything ITAR or USML controlled, anything Wassenaar dual-use restricted without a licence and anything for end-user-restricted destinations. If a part is close to the line, we decline it.

Who decides the export classification of an enclosure or a mount?

You do, as the buyer. A plain bracket can still be controlled if it is specially designed for a controlled item. Confirm the classification with your compliance officer before sending files. We check the RFQ against our scope, but our check does not replace your classification.

Can matched suppliers apply the finish and marking my program needs?

Suppliers arrange MIL-PRF-8625 anodize, MIL-DTL-5541 chem film, black oxide, passivation, powder coat and paint in-house or through local finishing partners, and can laser or dot-peen mark part numbers to your drawing. CARC and UID marking requirements must be stated in the RFQ so the supplier can confirm before quoting.

Have a part in one of these families?

Send the drawing with material, finish, quantity and export classification. We reply within 24 business hours with your matched suppliers.

Send RFQ