1/4"-20 Axles | McMaster-Carr

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	System of Measurement System of Measurement

Inch

	Diameter Diameter

	Length Length

	End Type End Type


Straight	Threaded

Made to Order	With Retaining Ring Grooves

Keyed	Tapped

D-Profile	Step Down

	Thread Size Thread Size	Show

1/4"-20

	Thread Size Thread Size	Hide

	Material Material

Steel

Stainless Steel

	Thread Length Thread Length

	For Motion Type For Motion Type

	Rotary

	Edge Type Edge Type

	Chamfered

	Mechanical Finish Mechanical Finish

Precision Ground

Polished

Turned

	Hardness Rating Hardness Rating

Medium

Hard

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

DFARS Specialty Metals
Compliant

	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

	Hardness Hardness

	Step Length Step Length

Made to Order

	Number of Grooves Number of Grooves

	Overall Diameter Overall Diameter

1/2"

3/4"

	Heat Treatment Heat Treatment

Annealed (Softened)

Hardened

	Groove Diameter Groove Diameter

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

REACH Compliant

	End-to-Groove Length End-to-Groove Length

0.063"

0.125"

Made to Order

	Retaining Ring Included Retaining Ring Included

Yes

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About Shafts

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.

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.

Tapped D-Profile Rotary Shafts

Connect these internally threaded shafts directly to threaded components, or use a fastener to secure. They have a flat surface area that 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.

Wheel Axles

Replace worn or broken caster axles.

Hollow Threaded Studs

A hollow center allows these studs to be used as an axle, a vent, or a passageway for wiring.