Step-Down Shafts | McMaster-Carr

	End Type End Type


Step Down	Made to Order

Straight	Threaded

Keyed	Tapped

Splined	D-Profile

With Retaining Ring Grooves

	System of Measurement System of Measurement

Inch

Metric

	Diameter Diameter

	Length Length

	Material Material

Steel

Stainless Steel

	Step Diameter Step Diameter

	Mechanical Finish Mechanical Finish

Polished

Precision Ground

Turned

	For Motion Type For Motion Type

	Rotary
	Linear
	Linear and Rotary

	Hardness Rating Hardness Rating

Medium

Hard

Very Hard

	Step Length Step Length

150 mm

Made to Order

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

DFARS Specialty Metals
COTS-Exempt

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

RoHS Compliant

	For Shaft Type For Shaft Type

	Keyed
	Round

	Hardness Hardness

	Yield Strength Yield Strength

	Shaft Diameter Shaft Diameter

	For Shaft Diameter For Shaft Diameter

	Thread Size Thread Size

	Heat Treatment Heat Treatment

Annealed (Softened)

Case Hardened

Hardened

	Keyway Width Keyway Width

	Bore Keyway Width Bore Keyway Width

	Shaft Keyway Width Shaft Keyway Width

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

REACH Compliant

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501 Products

About Shafts

Step-Down Rotary Shafts

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

Threaded Rotary Shafts

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

D-Profile Rotary Shafts

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

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.

Keyed Rotary Shafts

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

Step-Down Linear Motion Shafts

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

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.

Tapped Linear Motion Shafts

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

Linear Motion Shafts with Retaining Ring Grooves

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

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.

Shaft Adapters

Step-Up Shaft Adapters

Increase the diameter of your shaft while also making it longer.

Step-Down Shaft Adapters

Reduce the diameter of your shaft while adding length.