Step Down Shafts | McMaster-Carr

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	End Type End Type	Show

	Step Down

	End Type End Type	Hide


Straight	Keyed

Made to Order	Tapped

Threaded	D-Profile

With Retaining Ring Grooves	Plain

Splined	Step Down

Hollow

	System of Measurement System of Measurement

Inch

Metric

	Diameter Diameter

	Length Length

	Material Material

Stainless Steel

Steel

	Step Diameter Step Diameter

1/2"

3/4"

Made to Order

	Mechanical Finish Mechanical Finish

Precision Ground

Polished

Turned

	For Motion Type For Motion Type

	Rotary
	Linear

	Edge Type Edge Type

	Chamfered

	Hardness Rating Hardness Rating

Medium

Hard

Very Hard

	Step Length Step Length

Made to Order

	Hardness Hardness

	Yield Strength Yield Strength

20,000 to 99,999 psi

	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 Size Thread Size

	Heat Treatment Heat Treatment

Case Hardened

Annealed (Softened)

Hardened

	Keyway Width Keyway Width

	(ORDERING) Keyway Length (Range) (ORDERING) Keyway Length (Range)

150mm

	Keyway Length Keyway Length

Made to Order

	Surface Smoothness Surface Smoothness

9 microinch

	Keyway Depth Keyway Depth

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

REACH Compliant

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About Shafts

Keyed Rotary Shafts

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

D-Profile Rotary Shafts

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

Tapped Rotary Shafts

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

Threaded Rotary Shafts

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

Step-Down Rotary Shafts

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

Rotary Shafts with Retaining Ring Grooves

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

Linear Motion Shafts

Tapped Linear Motion Shafts

Internal threads allow you to mount these shafts onto threaded studs and fasteners, no shaft supports needed.

Threaded Linear Motion Shafts

Mount these externally threaded shafts into tapped holes rather than using a shaft support, or attach a hex nut, shaft collar, or other threaded accessory.

Step-Down Linear Motion Shafts

A shoulder near the end of the shaft allows for easy positioning of housings, shaft supports, and collars.

Linear Motion Shafts with Retaining Ring Grooves

Clip retaining rings into the grooves to separate and position collars, supports, and housings.