Aerospace precision manufacturing
Precision Aerospace Spacers & CNC Machined Components Made to Drawing
SpacerMFG manufactures custom precision spacers, sleeves, standoffs, bushings, and turned components for aerospace, defense, and high-reliability industrial applications.
We work directly from customer 2D prints and 3D CAD models, delivering exact tolerances, verified material traceability, and consistent batch-to-batch repeatability from prototype to volume production.
Engineering control
Dimensional control built for aerospace hardware
Aerospace assemblies demand tight dimensional control to maintain structural integrity, prevent stack-up errors, and withstand operational vibration. A deviation of only a few microns can affect load distribution, wear, or assembly performance.
Typical surface requirement
Ra 0.8 µm / 32 µin or better
Controlled surface roughness helps minimize stress concentration points and improve fatigue life.
Concentricity & perpendicularity
Parallel mating surfaces eliminate point-loading on fasteners, bearings, and structural frames.
Burr-free edges
Internal and external burrs are removed under magnification to prevent particulate contamination.
Stack-up management
Precision-ground thickness maintains fastener preload and eliminates dynamic play in linkages.
Drawing-driven production
Custom dimensions, tolerances, surface finishes, and geometric features are produced to specification.
CNC machining capabilities
From micro-standoffs to structural spacer sleeves
Dedicated CNC turning and milling centers process high-strength aluminum alloys, stainless steel, titanium, brass, and high-performance engineering plastics for prototypes, low-volume runs, and repeat production.
CNC turning & Swiss-style machining
Turned partsPrecision spacers, sleeves, bushings, pins, shafts, standoffs, and retaining collars.
- Outer diameter
- 1.0–300 mm
- Length range
- 1.0–500 mm
- Standard tolerance
- ±0.01 mm
- Features
- Threads, stepped OD/ID, grooves, chamfers, radii
- Batch sizes
- 1–10 prototypes; 100–1,000 repeat runs
CNC milling & secondary operations
Complex featuresFlanged spacers, structural brackets, sensor mounts, and manifold blocks with high position accuracy.
- Milling features
- Deep pockets, counterbores, keyways, tapped holes, contours
- Position tolerance
- True position ±0.02 mm
- Standard finish
- Ra 1.6 µm
- Finish grinding
- Down to Ra 0.4 µm
Material selection
Certified materials for demanding environments
Material selection affects strength-to-weight ratio, corrosion resistance, and thermal performance. Certified raw materials with chemical and physical test reports are available upon request.
7075-T6
316/316L
17-4 PH
Ti-6Al-4V
C93200
PTFE
Delrin
Complete part processing
Machining, finishing, inspection, and traceability
CNC machining
Turned and milled features made to drawing.
Deburring & grinding
Clean edges, controlled flatness, and tight fits.
Surface treatment
Anodizing, passivation, plating, and black oxide.
Inspection
Dimensional audits and documented compliance.
Shipping
Ultrasonic cleaning and protective packaging.
Finishing and identification options
- Precision drilling and reaming: H7/H8 bore fits for sleeve bearings and locating pins.
- Anodizing: MIL-A-8625 Type II and Type III hardcoat for aluminum.
- Passivation: ASTM A967 / AMS 2700 for stainless steel.
- Plating and marking: Electroless nickel, zinc, black oxide, and laser marking for part, lot, or barcode identification.
Custom spacer configurations
- Plain cylindrical spacers: Custom ID, OD, and precise length.
- Stepped and shoulder spacers: Multiple diameters for alignment and positive stops.
- Flanged spacers and bushings: Integrated flanges for axial loads and structural location.
- Threaded standoffs: Metric or Imperial UNC/UNF threads for avionics and chassis mounting.
Application fit
Built for aerospace systems and demanding industrial equipment
Avionics & electronics enclosures
Lightweight aluminum standoffs and insulated engineering plastic spacers for printed circuit boards, power modules, and shielding plates.
Flight controls & actuation
Precision-ground stainless steel and titanium sleeves for control rod ends, hinge joints, and hydraulic actuator mounting points.
Satellite & payload structures
7075 aluminum and titanium spacers for optical payload mounts, solar array mechanisms, and structural frame alignment.
Ground support & testing equipment
Heavy-duty steel bushings, guide pins, and custom spacers for assembly jigs, test benches, and launch support systems.
Quality assurance
Inspection evidence for every production stage
Every part undergoes multi-stage inspection to ensure compliance with drawing requirements before shipment.
Dimensional verification
CMMs, optical comparators, digital micrometers, and thread plug gauges.
Material traceability
Mill test reports available for aluminum, stainless steel, and titanium lots.
First Article Inspection
FAI support is available upon request for pre-production approval.
Cleaning & packaging
Ultrasonic cleaning and individual protective packaging help prevent contamination and transit damage.
Request a quote
Send your drawings to start your aerospace project
Partner with SpacerMFG for reliable, high-precision turned parts built to your exact specifications. Submit your engineering drawings to receive a detailed quote with lead times.
Include these details with your inquiry
- 2D prints and 3D CAD files: PDF, STEP, IGES, or DWG files.
- Material requirements: Grade and temper, such as 7075-T6 or 17-4 PH.
- Finish specifications: Anodizing, passivation, plating, or laser marking requirements.
- Order quantity: Prototype quantity, initial batch, or estimated annual usage.
Email: info@spacermfg.com
Manufacturing facility:
Company brand: SpacerMFG
Contact our engineering team
Share your part requirements and our team will review the drawing package with you.