Acme Lead Screws | McMaster-Carr

	System of Measurement System of Measurement

Inch

Metric

	Thread Size Thread Size

	Thread Type Thread Type

Acme

Metric Trapezoidal

Rounded Acme

Metric Rounded
Trapezoidal

	Component Component

	Lead Screw
	Nut
	Flange
	End Support
	Collar
	Handle
	Hex Head Screw

	Thread Direction Thread Direction

	Right Hand
	Left Hand
	Right Hand and Left Hand

	Material Material

	Length Length

	Nut Type Nut Type


Hex	Flange

Round	Externally Threaded

Coupling	Square

Platform	Thumb

	Threading Threading


Fully Threaded	Partially Threaded

	Number of Thread Starts Number of Thread Starts

	Travel Distance per Turn Travel Distance per Turn

	Speed Ratio Speed Ratio

	Tensile Strength Tensile Strength

100,000 psi or greater

Not Rated

	Hardness Hardness

	Thread Fit Thread Fit

Class 2C

Class 2G

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

RoHS Compliant

RoHS Compliant with
Exemptions

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

DFARS Specialty Metals
COTS-Exempt

DFARS Specialty Metals
Compliant

	Fastener Strength Grade/Class Fastener Strength Grade/Class

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

REACH Compliant

	Thread Pitch Thread Pitch

	Diameter Diameter

	Height Height

	Specifications Met Specifications Met

1,765 Products

Selecting Compatible Lead Screws and Nuts

Acme Lead Screws and Nuts

Found in hand-powered clamps, vises, grates, doors, and work tables, lead screws and nuts have broad, square threads that are well suited for quick assembly, high clamping forces, and lifting and lowering heavy objects.

Metric Lead Screws and Nuts

These metric lead screws and nuts have broad, square threads that are well suited for quick assembly, high clamping forces, and lifting and lowering heavy objects. They're commonly found in hand-powered clamps, vises, grates, doors, and work tables.

Precision Acme Lead Screws and Nuts

Also known as single-start and self-locking lead screws and nuts, these have a single thread that runs the length of the screw. The nut travels only when the screw turns, so your system won't unexpectedly move when the lead screw is at rest.

Fast-Travel Precision Acme Lead Screws and Nuts

Multiple thread channels (also known as thread starts) create faster linear travel than lead screws with a single thread start.

Flanges for Precision Acme Nuts

Combine with an externally threaded acme nut to create a custom flange nut.

Metric Precision Lead Screws and Nuts

Also known as trapezoidal-thread lead screws and nuts.

Ultra-Precision Lead Screws and Nuts

Fast-Travel Ultra-Precision Lead Screws and Nuts

Multiple thread channels (also known as thread starts) create faster linear travel than lead screws with a single thread start.

Metric Fast-Travel Ultra-Precision
Lead Screws and Nuts

Multiple thread channels (also known as thread starts) create faster linear travel than lead screws with a single thread start.

Metric Ultra-Precision Lead Screws and Nuts

End Supports for Lead Screws and Ball Screws

A set of ball bearings reduces friction and secures the end of a ball or lead screw.

Metric End Supports for Lead Screws and Ball Screws

A set of ball bearings reduces friction and secures the end of a metric ball or lead screw.

Clamping Acme Lead Screw Collars

Thread these one-piece collars onto an Acme lead screw.

Two-Piece Clamping Acme Lead Screw Collars

Mount these two-piece collars anywhere on an Acme lead screw without removing components.

Metric Clamping Lead Screw Collars

Install these threaded collars on a metric lead screw to separate and position components, or use them as an end stop to limit travel.

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Selecting Compatible Lead Screws and Nuts