Carbon Steel Screws | McMaster-Carr

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	Material Material

Steel

	System of Measurement System of Measurement

Inch

Metric

	Thread Size Thread Size

	Thread Type Thread Type

	Component Component

	Length Length

	Thread Direction Thread Direction

Right Hand

Left Hand

Right Hand and Left Hand

	Threading Threading

Fully Threaded

Partially Threaded

Threaded on Both Ends

	Travel Distance per Turn Travel Distance per Turn

	Number of Thread Starts Number of Thread Starts

	Nut Type Nut Type


Coupling	Flange

Hex	Square

	Finish Finish

Black Oxide

Zinc Plated

Zinc Yellow-Chromate Plated

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

DFARS Specialty Metals
COTS-Exempt

	Hardness Hardness

	Head Type Head Type


Hex	Flat

Headless

	Tensile Strength Tensile Strength

	Speed Ratio Speed Ratio

	Thread Fit Thread Fit

	Minimum Thread Length Minimum Thread Length

	Thread Pitch Thread Pitch

	OD OD

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

RoHS Compliant

RoHS Compliant with
Exemptions

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

REACH Compliant

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1,288 Products

Fasteners

Large-Diameter Swivel-Tip Set Screws

A wide tip provides more gripping power than standard swivel-tip set screws. To use, remove the tip, thread the screw through the hole, and attach the tip on the other side.

Male-Female Threaded Hex Standoffs

Jack Screws

Secure computer cables and panels.

Steel Female-Threaded Anchors for Concrete

A zinc plating provides corrosion resistance in wet environments.

Weld-On Stud Anchors for Wet Concrete

These stud anchors strengthen the parts of buildings where steel framing connects to concrete. They’re also known as Nelson studs.

Machinable-Hub Knobs

Mill specific holes or keyways in the hub to meet your specifications, or weld in place. These knobs provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery.

Lead Screws and Screw Jacks

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.

Metric Precision Acme Lead Screws and Nuts

Also known as trapezoidal-thread 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 Acme 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.

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 Acme 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.

Metric Ball Screws and Nuts

Internal ball bearings provide smooth low-friction travel in applications that require high speeds, accurate positioning, and repeatable movement. Also known as single-start metric ball screws and nuts, these have a single thread that runs the length of the 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.

Self-Reversing Lead Screws and Nuts

A crisscross thread pattern allows you to drive the nut back and forth without changing the lead screw's direction of rotation. When the nut reaches one end of the lead screw, it changes direction and travels back to the other end.

Connecting Rods

Designed for use with right-hand, internally threaded rod ends, these rods have right-hand threads on both ends. Use them for remote valve operators, throttle controllers, shifting mechanisms, and virtually any push/pull assembly.

Internally Threaded Connecting Rods

Designed for use with right-hand, externally threaded rod ends, these rods have right-hand threads on both ends. Use them for remote valve operators, throttle controllers, shifting mechanisms, and virtually any push/pull assembly.

Turnbuckle-Style Connecting Rods

Similar to turnbuckles, these rods have right-hand threads on one end and left-hand threads on the other so you can make a linkage that adjusts for tension. Add right- and left-hand threaded rod ends to build your linkages.

Internally Threaded Turnbuckle-Style Connecting Rods

Similar to turnbuckles, these rods have right-hand threads on one end and left-hand threads on the other so you can make a linkage that adjusts for tension.