Grade 2H Steel Coupling Nuts

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Fastener Strength Grade/Class

ASTM Grade 2H

Material

Steel

System of Measurement

Thread Size

Width

Nut Type

Fastener Strength Rating

Length

Threading

Thread Direction

Performance

Thread Type

Coupling Nut Profile

DFARS Specialty Metals

Exempt

RoHS

Compliant

Thread Fit

Unified Standard Class 2B

Drive Style

External Hex

Thread Spacing

Coarse

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

REACH

Compliant

Export Control Classification Number (ECCN)

EAR99

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9 Products

Coupling Nuts

Also known as extension nuts, these are commonly used to connect lengths of threaded rod and join threaded parts.

Extreme-Strength Steel

Made from Grade 2H steel, these are about 20% stronger than high-strength steel coupling nuts. Use them with threaded rods that have a comparable strength rating to avoid stripping threads during installation.

Steel—Best for dry environments since moisture will cause these nuts to rust.

							Each
	Thread Size	Lg.	Wd.	Fastener Strength Grade/Class	Threading		1-9	10-49	50-Up
Steel



		1/4"-20	7/8"	1/2"	ASTM Grade 2H	Fully Threaded	90654A305	000000	000000	000000


		3/8"-16	1 3/4"	11/16"	ASTM Grade 2H	Fully Threaded	90654A311	00000	00000	00000
		1/2"-13	1 3/4"	7/8"	ASTM Grade 2H	Fully Threaded	90654A317	00000	00000	00000
		5/8"-11	2 1/8"	1 1/16"	ASTM Grade 2H	Fully Threaded	90654A323	00000	00000	00000
		3/4"-10	2 1/4"	1 1/4"	ASTM Grade 2H	Fully Threaded	90654A329	00000	00000	00000
		7/8"-9	2 1/2"	1 1/2"	ASTM Grade 2H	Fully Threaded	90654A334	00000	00000	00000
		1"-8	2 3/4"	1 5/8"	ASTM Grade 2H	Fully Threaded	90654A340	00000	00000	00000
		1 1/4"-7	3"	2"	ASTM Grade 2H	Fully Threaded	90654A346	00000	00000	00000
		1 1/2"-6	3 1/2"	2 1/2"	ASTM Grade 2H	Fully Threaded	90654A351	00000	00000	00000