1 1/2"-5 Rods | McMaster-Carr

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	System of Measurement System of Measurement

Inch

	Thread Size Thread Size	Show

1 1/2"-5

	Thread Size Thread Size	Hide

	Thread Type Thread Type

Acme

	Thread Direction Thread Direction


Right Hand	Left Hand

	Component Component

	Lead Screw
	Nut

	Material Material

Bronze

Stainless Steel

Steel

	Length Length

	Nut Type Nut Type


Hex	Externally Threaded

	Tensile Strength Tensile Strength

	Threading Threading

	Fully Threaded

	Hardness Hardness

	Number of Thread Starts Number of Thread Starts

	Thread Fit Thread Fit

Class 2C

Class 2G

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

RoHS Compliant

RoHS Compliant with
Exemptions

	Speed Ratio Speed Ratio

1:1

	Travel Distance per Turn Travel Distance per Turn

0.2"

	Fastener Strength Grade/Class Fastener Strength Grade/Class

ASTM Grade B7

Grade 2

	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

	Specifications Met Specifications Met

ASTM A108

ASTM A193

	Height Height

1 15/32"

1 1/2"

	Width Width

2 1/4"

2 3/8"

	Finish Finish

24 Products

Selecting Compatible 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. To ensure compatibility, please select components that have the same thread direction and size.

Carbon steel components are easier to machine than alloy steel components. Zinc-plated carbon steel components have mild corrosion resistance. Alloy steel components are harder and stronger than carbon steel components. 18-8 stainless steel components have good corrosion resistance.

Travel distance per turn, also known as screw lead, is the distance a nut or handle moves with one revolution of the lead screw.

For technical drawings and 3-D models, click on a part number.

Lead Screws—Right-Hand Threaded

Carbon Steel
Thread Size	Lg.	No. of Thread Starts	Speed Ratio	Travel Distance per Turn	Thread Fit	Fastener Strength Grade/Class	Hardness	Tensile Strength, psi	Specifications Met		Each
1 1/2"-5	12"	1	1:1	0.2"	Class 2G	Grade 2	Rockwell B61	64,000	ASTM A108	000000000	000000
1 1/2"-5	3 ft.	1	1:1	0.2"	Class 2G	Grade 2	Rockwell B61	64,000	ASTM A108	000000000	00000
1 1/2"-5	6 ft.	1	1:1	0.2"	Class 2G	Grade 2	Rockwell B61	64,000	ASTM A108	000000000	000000
Alloy Steel
1 1/2"-5	12"	1	1:1	0.2"	Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	000000000	00000
1 1/2"-5	3 ft.	1	1:1	0.2"	Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	000000000	000000
1 1/2"-5	6 ft.	1	1:1	0.2"	Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	000000000	000000
18-8 Stainless Steel
1 1/2"-5	3 ft.	1	1:1	0.2"	Class 2G	__	Rockwell B96	Not Rated	__	000000000	000000
1 1/2"-5	6 ft.	1	1:1	0.2"	Class 2G	__	Rockwell B96	Not Rated	__	000000000	000000

Lead Screws—Left-Hand Threaded

Carbon Steel
Thread Size	Lg.	No. of Thread Starts	Speed Ratio	Travel Distance per Turn	Thread Fit	Fastener Strength Grade/Class	Hardness	Tensile Strength, psi	Specifications Met		Each
1 1/2"-5	3 ft.	1	1:1	0.2"	Class 2G	Grade 2	Rockwell B61	53,000	ASTM A108	000000000	000000
1 1/2"-5	6 ft.	1	1:1	0.2"	Class 2G	Grade 2	Rockwell B61	64,000	ASTM A108	000000000	000000
Alloy Steel
1 1/2"-5	3 ft.	1	1:1	0.2"	Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	000000000	000000
1 1/2"-5	6 ft.	1	1:1	0.2"	Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	000000000	000000

Hex Nuts—Right-Hand Threaded

Hex nuts fasten and position lead screw components.

Carbon Steel
Thread Size	Ht.	Wd.	No. of Thread Starts	Speed Ratio	Travel Distance per Turn	Thread Fit	Hardness		Each
1 1/2"-5	1 15/32"	2 3/8"	1	1:1	0.2"	Class 2G	Rockwell B75	000000000	000000
Zinc-Plated Carbon Steel
1 1/2"-5	1 15/32"	2 3/8"	1	1:1	0.2"	Class 2G	Rockwell B75	000000000	00000
18-8 Stainless Steel
1 1/2"-5	1 1/2"	2 1/4"	1	1:1	0.2"	Class 2G	Rockwell B97	000000000	000000

Hex Nuts—Left-Hand Threaded

Hex nuts fasten and position lead screw components.

Carbon Steel
Thread Size	Ht.	Wd.	No. of Thread Starts	Speed Ratio	Travel Distance per Turn	Thread Fit	Fastener Strength Grade/Class	Hardness		Each
1 1/2"-5	1 1/2"	2 3/8"	1	1:1	0.2"	Class 2G	Grade 2	Rockwell B85	000000000	000000

Precision Acme Lead Screws and Nuts

Pair with a motor in automated motion and positioning applications. A tight thread fit allows these lead screws and nuts to make accurate, repeatable starts and stops. Also known as single-start and self-locking lead screws and nuts, they 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. To ensure compatibility, please select components that have the same thread direction and size.

Black-oxide alloy steel lead screws are hard and strong. They have mild corrosion resistance. 932 bearing bronze and 673 bronze nuts are wear resistant. They have good machinability and fair corrosion resistance.

Travel distance per turn, also known as screw lead, is the distance a nut moves with one revolution of the lead screw.

For technical drawings and 3-D models, click on a part number.

Lead Screws—Right-Hand Threaded

Right-Hand Threads

Black-Oxide 4140 Alloy Steel
Thread Size	Lg.	No. of Thread Starts	Speed Ratio	Travel Distance per Turn	Accuracy for Travel Distance per Turn	Thread Fit	Hardness	Tensile Strength, psi		Each
1 1/2"-5	3 ft.	1	1:1	0.2"	±0.009" per ft.	Class 2C	Brinell 271	125,000	000000000	0000000
1 1/2"-5	6 ft.	1	1:1	0.2"	±0.009" per ft.	Class 2C	Brinell 271	125,000	000000000	000000

Lead Screws—Left-Hand Threaded

Left-Hand Threads

Black-Oxide 4140 Alloy Steel
Thread Size	Lg., ft.	No. of Thread Starts	Speed Ratio	Travel Distance per Turn	Accuracy for Travel Distance per Turn	Thread Fit	Hardness	Tensile Strength, psi		Each
1 1/2"-5	3	1	1:1	0.2"	±0.009" per ft.	Class 2C	Brinell 271	125,000	000000000	0000000
1 1/2"-5	6	1	1:1	0.2"	±0.009" per ft.	Class 2C	Brinell 271	125,000	000000000	000000

Externally Threaded Nuts—Right-Hand Threaded

Combine externally threaded nuts with a flange to create a custom flange nut.

						External Thread
Thread Size	Lg.	Dia.	No. of Thread Starts	Speed Ratio	Travel Distance per Turn	Size	Lg.	Thread Fit	Hardness	Dynamic Thrust Load Cap., lbs.		Each
673 Bronze
1 1/2"-5	2 19/64"	2.125"	1	1:1	0.2"	1 31/32"-18	13/16"	Class 2C	Brinell 70	Not Rated	000000000	0000000

Externally Threaded Nuts—Left-Hand Threaded

Combine externally threaded nuts with a flange to create a custom flange nut.

						External Thread
Thread Size	Lg.	Dia.	No. of Thread Starts	Speed Ratio	Travel Distance per Turn	Size	Lg.	Thread Fit	Hardness	Dynamic Thrust Load Cap., lbs.		Each
673 Bronze
1 1/2"-5	2 19/64"	2.125"	1	1:1	0.2"	1 31/32"-18	13/16"	Class 2C	Brinell 70	Not Rated	000000000	0000000

Flanges

Thread onto an externally threaded acme nut to create a custom flange nut.

1117 Carbon Steel
Flange Thread Size	Flange Dia.	Flange Thick.	Bolt Circle Dia.	Flange Hardness		Each
1 31/32"-18	4 13/64"	53/64"	3 7/16"	Brinell 156	000000000	000000
303 Stainless Steel
1 31/32"-18	4 13/64"	53/64"	3 7/16"	Brinell 140	0000000	000000