20mm Axles | McMaster-Carr

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	System of Measurement System of Measurement

Metric

	Diameter Diameter	Show

20mm

	Diameter Diameter	Hide

	Length Length

	End Type End Type


Straight	Threaded

Made to Order	With Retaining Ring Grooves

Keyed	Tapped

D-Profile	Step Down

Splined

	Material Material

Steel

Stainless Steel

	For Motion Type For Motion Type

	Rotary
	Linear and Rotary

	Edge Type Edge Type


Chamfered	Straight

	Mechanical Finish Mechanical Finish

Precision Ground

Polished

Turned

	Thread Size Thread Size

	Number of Splines Number of Splines

	Hardness Rating Hardness Rating

	Hardness Hardness

	Yield Strength Yield Strength

Less than 40,000 psi

50,000 to 69,999 psi

70,000 to 79,999 psi

80,000 psi or greater

Not Rated

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	Thread Length Thread Length

	Spline Length Spline Length

200 mm

1,000 mm

2,000 mm

	Thread Pitch Thread Pitch

1.75mm

2.5mm

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Specifications Met Specifications Met

DIN

ISO

	Heat Treatment Heat Treatment

Annealed (Softened)

Hardened

Case Hardened

	Step Length Step Length

Made to Order

	Keyway Width Keyway Width

6mm

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About Shafts

Rotary Shafts

Use these general purpose shafts with bearings, sprockets, and gears to transmit rotary motion.

Thread-Mount Idler Rotary Shafts

Thread these shafts into a tapped hole to support idler sprockets and pulleys in tensioning applications. They have a retaining-ring groove, retaining ring, and spacers to position your component and hold it in place.

Flange-Mount Idler Rotary Shafts

Mount the flange to a machine or wall to support idler sprockets and pulleys in tensioning applications. They include washers and a nut to position your component and hold it in place.

Keyed Rotary Shafts

Combine with a machine key to transmit torque to gears, sprockets, and other power transmission components.

Threaded Rotary Shafts

Attach threaded accessories, such as mixer propellers and fan blades, to the end of these shafts.

Rotary Shafts with Retaining Ring Grooves

Clip retaining rings into the grooves to separate and position gears, sprockets, and bearings.

Tapped Rotary Shafts

Connect these internally threaded shafts directly to threaded components, or use a fastener to secure.

D-Profile Rotary Shafts

A flat surface area allows set screws to dig into the shaft for securely mounting gears, sprockets, and bearings.

Step-Down Rotary Shafts

A shoulder near the end of the shaft provides a stop for gears, sprockets, and bearings.

Splined Shafts for Rotary and Linear Motion

Grooves on the surface of these shafts transmit rotary power while allowing bearings to move freely along the length of the shaft.