Long Rod Nuts | McMaster-Carr

	System of Measurement System of Measurement

Inch

Metric

	Thread Size Thread Size

	Thread Type Thread Type

	Length Length

	Width Width

	Material Material

	Finish Finish

Zinc Plated

Black Oxide

Hot-Dipped Galvanized

Zinc-Flake Coated

	Nut Type Nut Type


Coupling	Hex

Cap

	Threading Threading

	Fully Threaded
	Partially Threaded

	Thread Direction Thread Direction


Right Hand	Left Hand

	Coupling Nut Profile Coupling Nut Profile

Extra Long

Standard

	Thread Spacing Thread Spacing

Coarse

Fine

Extra Fine

	Thread Fit Thread Fit

Class 2B

Class 6H

	Drive Style Drive Style


External Hex	External Square

	Fastener Strength Grade/Class Fastener Strength Grade/Class

	Thread Pitch Thread Pitch

	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

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

DFARS Specialty Metals
COTS-Exempt

DFARS Specialty Metals
Compliant

	Minimum Thread Length Minimum Thread Length

	OD OD

	Hex Length Hex Length

	Specifications Met Specifications Met

678 Products

About Nuts, Materials, and Finishes

Steel Extra-Long Coupling Nuts

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

Stainless Steel Extra-Long Coupling Nuts

Stainless steel coupling nuts have excellent corrosion resistance in most environments.

Low-Strength Steel Coupling Nuts

About half the strength of medium-strength steel coupling nuts, these nuts are for light duty fastening applications.

Metric Low-Strength Steel Coupling Nuts

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

Left-Hand Threaded Low-Strength Steel Coupling Nuts

The left-hand threads on these coupling nuts resists loosening from counterclockwise vibration. Use in light duty applications.

Medium-Strength Steel Coupling Nuts—Grade 5

Made from Grade 5 steel, these inch-sized coupling nuts are suitable for most applications.

Metric Medium-Strength Steel Coupling Nuts—Class 8

Choose these locknuts to fasten standard metric threads. They’re Class 8 steel, so they can be used in most fastening applications.

High-Strength Steel Coupling Nuts—Grade 8

Made from Grade 8 steel, these nuts are about 25% stronger than medium-strength steel coupling nuts. Furnished in inch thread sizes.

Metric High-Strength Steel Coupling Nuts—Class 10

These metric-sized coupling nuts are Class 10 steel, so they’re about 25% stronger than medium-strength steel coupling nuts.

Extreme-Strength Steel Coupling Nuts

Comparable in strength to Grade 9 bolts, these coupling nuts are about 20% stronger than high-strength steel coupling nuts. Available in inch thread sizes.