CNC Machined Aluminum Gas Stove Control Knob

This is a CNC machined metal control knob for gas stoves, ovens and cooktops, usually turned from aluminum and finished by anodizing or brushing. It includes a D-shaped or splined shaft bore, grip knurling or flutes, and engraved or printed position markings. It suits appliance brands and replacement part sellers that want durable, premium-feeling knobs instead of plastic ones.

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

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D-shaft or splined bore matched to valve stem
Knurled or fluted grip from CNC turning
Laser-engraved markings aligned to the flat
Anodized, brushed or chrome plated finishes

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. 1600603056861 ·

Specifications
Process	CNC turning, broaching, knurling, laser engraving
Materials	Aluminum 6061/6063, brass, carbon steel, copper
Surface Finish	Anodizing, brushing, chrome plating, laser engraving
Bore	D-shaft or splined, matched to valve stem
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 machined aluminum gas stove control knob.

Knobs are turned on CNC lathes from aluminum bar, forming the outer profile, skirt and front face, then the shaft bore is drilled and broached or milled to the D-shape. Knurls are rolled or cut, and flutes milled with live tools. Position indicators and logos are laser engraved after finishing. A spring clip groove inside the bore helps the knob stay on the valve shaft.

Aluminum 6061 or 6063 is light and anodizes in silver, black or champagne; brushed surfaces give a stainless look. Brass knobs feel heavier and can be chrome plated. Carbon steel and copper are used rarely. Because stove knobs get hot, avoid painted finishes near burners; anodizing and plating handle heat better. The bore fit should hold the knob firmly without stressing the valve.

Bore shape and fit are checked on a sample valve shaft, and markings are checked for alignment with the D-flat. Cosmetic surfaces are inspected for scratches and color consistency before packing. Typical uses include gas range knobs, oven selector knobs, induction cooktop dials, grill control knobs and replacement knobs for premium kitchen appliances.

FAQ

Frequently asked questions

How do you make sure the knob fits our gas valve shaft?

We machine the D-shaped or splined bore to your drawing and test it on a sample valve shaft or gauge. A spring clip or internal groove can improve retention. Sending a valve shaft sample or its drawing ensures the knob fits snugly without excessive force.

Do aluminum knobs get too hot on a gas stove?

Aluminum conducts heat, so a knob very close to a burner can become warm. Designers often add a plastic or stainless insert, a larger gap from the burner, or a thicker skirt. Anodized and brushed finishes handle heat better than paint. Heat testing in the final appliance is recommended.

How do I get a quote for cnc machined aluminum gas stove control knob?

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.