CNC Turned 6061 Aluminum Auto Spacers and Fittings

These are CNC turned 6061 aluminum automotive spacers, adapters, hose fittings, sleeves and bushings. Turning produces accurate diameters, bores and threads, with milled flats and cross holes added on the same machine. They are made for automotive parts distributors and aftermarket brands that need lightweight round parts, typically in batches from about one hundred to several thousand pieces, packed in cartons.

Material: Aluminum
Tolerance: to ±0.005 mm
MOQ: 1 piece
Prototype lead time: 3–7 days

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Bar-fed lathes for efficient repeat batches
AN flare seats and hose barbs form-turned
Black, red, blue or clear anodizing
Per-SKU bagging and carton labeling

ISO 9001 quality system, 100% critical-dimension inspection

NDA on request; your drawings are never shared

Door-to-door shipping with export documents

Item ref. 1600550688327 ·

Specifications
Process	CNC turning with sub-spindle and live tooling
Materials	Aluminum 6061-T6; 7075-T6 on request
Surface Finish	Type II color anodizing, hard anodizing, laser marking
Packaging	Bagged per SKU, carton packed
Tolerance	±0.05 mm standard; down to ±0.005 mm on critical features
MOQ	1 piece; prototypes through mid-volume runs
Drawing Formats	STEP, IGES, X_T, STL, DWG, DXF, PDF
Lead Time	Prototypes typically 3–7 working days; production usually 10–20
Inspection	FAI, in-process checks, 100% critical dimensions; CMM

Manufacturing

How we make this part

Process, material options and inspection for cnc turned 6061 aluminum auto spacers and fittings.

Bar-fed CNC lathes keep cycle times short for repeated parts. The part profile, bore and threads are cut in one chucking, then a sub-spindle finishes the back face. Hose barbs and AN-style flare seats are turned with form tools for consistent geometry. Wrench flats, hex shapes and side ports are milled with live tools before the part is unloaded.

6061-T6 aluminum combines good strength, corrosion resistance and machinability, and it anodizes in black, blue, red or clear. For fluid fittings, Type II anodizing protects against coolant and fuel corrosion; hard anodizing improves thread wear on parts that are often removed. Sealing faces such as 37° flares are finished smoothly and can be masked if a bare seat is preferred.

Diameters, threads and seat angles are checked during production with gauges, and each batch receives a final inspection on critical dimensions before carton packing. Parts can be bagged and labeled per SKU for distributors. Common products include wheel hub spacers, coolant hose adapters, AN fittings, throttle body spacers, sensor bungs, steering spacers and suspension bushing sleeves.

FAQ

Frequently asked questions

Can you machine AN fittings in aluminum?

Yes. AN-style fittings with 37° flare seats and UNF threads are turned in 6061-T6 aluminum and anodized. Seat angle, thread fit and bore are checked on every lot. Pressure rating and compatibility with your fluid system should be confirmed by the designer or brand owner.

Are aluminum wheel spacers strong enough?

Hub-centric wheel spacers made from 6061-T6 or 7075-T6 with properly specified studs are common in the aftermarket. Strength depends on thickness, stud grade, pressing and correct installation torque. We machine to your validated design and can supply material certificates for traceability.

How do I get a quote for cnc turned 6061 aluminum auto spacers and fittings?

Send a 3D model (STEP or IGES) and a 2D drawing with tolerances, material, finish and quantity through the quote form or by email. An engineer replies within 24 hours on business days with price, lead time and any DFM suggestions.