M3 Threaded Rods | McMaster-Carr

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

REACH Compliant

	Thread Fit Thread Fit

Class 2B

Class 6g

Class 6H

	Hardness Hardness

	Specifications Met Specifications Met

ASTM

DIN

ISO

	OD OD

3mm

6.3mm

	Drive Style Drive Style


External Hex	Slotted

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

DFARS Specialty Metals
COTS-Exempt

DFARS Specialty Metals
Compliant

	Shaft Length Shaft Length

2.4 mm

6.4 mm

8.4 mm

	Thread Length Thread Length

	Nut Type Nut Type


Hex	Coupling

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115 Products

Threaded Rods and Studs

Metric Low-Strength Steel Threaded Rods

These metric threaded rods are about half the strength of medium-strength steel threaded rods for light duty hanging, mounting, and fastening.

Metric 18-8 Stainless Steel Threaded Rods

Available in metric sizes, these 18-8 stainless steel threaded rods have good chemical resistance.

Metric Super-Corrosion-Resistant
316 Stainless Steel Threaded Rods

These metric 316 stainless steel threaded rods are more corrosion resistant than 18-8 and 410 stainless steel threaded rods and have excellent resistance to chemicals and salt water.

Metric Brass Threaded Rods

These metric brass threaded rods are corrosion resistant in wet environments, electrically conductive, and nonmagnetic.

Metric Partially Threaded Studs

Screw the threaded end of these metric studs into a tapped hole and use the unthreaded end as a pivot point, hinge, shaft, or locator pin.

Steel Press-Fit Studs

These steel studs are zinc plated to resist corrosion in wet environments.

Stainless Steel Press-Fit Studs

18-8 stainless steel studs have good chemical resistance.

Coupling Nuts

Metric Low-Strength Steel Coupling Nuts

For light duty applications, choose these metric-sized coupling nuts.

Metric 18-8 Stainless Steel Coupling Nuts

These metric coupling nuts have good chemical resistance.

Aluminum Coupling Nuts

One-third the weight of steel, aluminum coupling nuts resist corrosion in wet environments.

Brass Coupling Nuts

Brass coupling nuts are corrosion resistant in wet environments and electrically conductive.

Plastic Coupling Nuts

Plastic coupling nuts are chemical resistant, nonconductive, and lightweight.

Steel Extra-Long Coupling Nuts

Known for their strength, steel coupling nuts are available with a corrosion-resistant finish.

Female Thread Adapters

Inch-to-Metric Female Hex Thread Adapters

Adapt threaded rods from inch to metric. These adapters connect two male-threaded fasteners, so you can change the gender of a mating part or increase or decrease its thread size. The hex-shaped body fits into the head of a standard wrench.

Metric-to-Metric Female Hex Thread Adapters

Increase or decrease metric thread size from one male-threaded part to another. Commonly used to connect two differently sized threaded rods, they have a hex-shaped body, so you can tighten them with a standard wrench.

Power Transmission

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.

Tapped Linear Motion Shafts

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