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◆ K4D · Aerospace Programs · ITAR-Registered

Aerospace CNC machining
for complex geometries.

Five-axis precision machining of aerospace-grade aluminum, titanium, and stainless. The Hermle C250 leads the floor for complex brackets, housings, and structural parts. Glass-scale Datron for tight-tolerance work. Mitutoyo Mistar 555 CMM verification for first articles and critical features. ITAR-registered facility in Salem, MA. Past programs include SpaceX.

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ITAR-Registered Facility · FAI / Inspection Reports · Most Quotes in 1 Business Day · Salem, MA

◆ Aerospace parts shipped into programs at ITAR-Registered Facility

SpaceX Commercial Space

Aerospace OEMs Primes & Tier-1s

Aero Subcontractors Tier-2 Programs

Defense Aero Dual-use ITAR

◆ Aerospace Capability · 01 / 04

Spec sheet for aerospace programs.

Materials, tolerances, and inspection envelope an aerospace sourcing engineer actually needs to confirm fit. Pin down compatibility in thirty seconds.

DocK4D-AERO-001 · REV 1

ClassITAR · NDA on Request

Geometry

5-axis complex parts on the Hermle C250 (workhorse)

Glass-scale precision on Datron M10 Pro

High-speed aluminum on Datron M8 Cube (60K rpm)

4-axis horizontal production on Okuma MB-4000H (2-pallet APC)

Materials (aero-grade)

Aluminum — 7075-T6/T651, 6061-T6, MIC-6, 2024

Titanium — Ti-6Al-4V Grade 5, Grade 2

Stainless — 17-4 PH, 316L, 304

Tool steels — 4140, A2, D2

Engineering plastics — PEEK, Ultem, Delrin, HDPE

Delivered tolerance

Tight features · ±0.0005" (±13 µm) (called out · CMM-verified)

Production typical · ±0.001" (±25 µm)

Default · ±0.003" (±75 µm) (unless tighter is specified on the print)

Envelope

39.4 × 27.6 × 9.6 in · 1000 × 700 × 245 mm (Datron M10 Pro)

23.6 × 21.7 × 17.7 in · 600 × 550 × 450 mm (Hermle C250 · 5-axis)

22.0 × 22.0 × 24.6 in · 560 × 560 × 625 mm (Okuma MB-4000H · 4-axis horizontal)

Inspection

Mitutoyo Mistar 555 CMM (Renishaw PH10MQ probe)

Trimos V5 height gauge + Mitutoyo bench suite

First article (FAI) inspection reports on request

Compliance

ITAR-Registered facility · dual-use hardware accepted

NDA available on request

AS9100 not held — operates to customer flow-down

Volume

Prototype · First article · Low-rate initial production (LRIP) · Mid-volume

No minimums — engineering and R&D programs welcome

File formats

STEP · IGES · SolidWorks · PDF

End of spec — submit RFQ for program-specific confirmation K4D · AERO

◆ Why 5-Axis · 02 / 04

Aerospace work needs the machine that fits the geometry.

Brackets, housings, and structural aerospace parts are rarely flat. They have features that approach from multiple angles, internal pockets, and tolerances that hold across the whole part — not just the side facing the spindle.

§ Principle 01 / 01

“The machine defines what the part can be.”

The Hermle C250 5-axis is the workhorse for complex aerospace geometries — full simultaneous-5 with swivel and rotary axes, ±6 µm positioning to VDI/DGQ 3441, and a 23.6 × 21.7 × 17.7 in (600 × 550 × 450 mm) envelope that covers most aerospace bracket and housing work. Climate-controlled facility keeps thermal expansion of stock and tooling from drifting a part out of tolerance over a long cycle. CMM verification on the Mitutoyo Mistar 555 confirms critical features before parts leave the floor.

◆ Anchored in Hermle C250 · Mitutoyo CMM · Temperature-Controlled

◆ Aerospace FAQ · 03 / 04

Aerospace-program questions.

Compliance, materials, and inspection questions aerospace sourcing and engineering teams ask before issuing an RFQ.

Do you have AS9100 certification?

AS9100 isn't required to discuss your program. We operate to customer flow-down requirements and drawing call-outs. If AS9100 certification is a hard requirement for your specific procurement, ask before we quote — we'll confirm fit.

Are you ITAR-registered for export-controlled aerospace work?

Yes — Kontrast4D is ITAR-registered. We handle export-controlled aerospace and dual-use hardware, from prototype through low-rate production. NDAs are available on request before files change hands.

Can you provide first article inspection (FAI) reports?

Yes. Critical features and first articles are verified on a Mitutoyo Mistar 555 CMM with a Renishaw PH10MQ motorized probe. We deliver first-article inspection reports on request.

What aerospace-grade materials do you machine?

Aluminum (7075-T6/T651, 6061-T6, MIC-6, 2024), titanium (Ti-6Al-4V Grade 5, Grade 2), stainless (17-4 PH, 316L, 304), and engineering plastics on request. Tool steels and brass/copper available.

Do you handle complex 5-axis aerospace geometries?

Yes — the 5-axis Hermle C250 is the workhorse for complex brackets, housings, and structural parts. Programmed in hyperMILL, run in a temperature-controlled environment for thermal stability over long cycles.

◆ Aerospace RFQ · 04 / 04

Send a print.
Quote on aerospace programs in one business day.

STEP, IGES, SolidWorks, or PDF. Secure ITAR-compliant intake. NDA available on request. Most quotes return within one business day with price, lead time, and clarifying questions.

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Aerospace CNC machining for complex geometries.