1 1/8"-5 Rods | McMaster-Carr

Clear All

	System of Measurement System of Measurement

Inch

	Thread Size Thread Size	Show

1 1/8"-5

	Thread Size Thread Size	Hide

	Thread Type Thread Type

Acme

	Component Component

	Collar
	Lead Screw
	Nut

	Thread Direction Thread Direction


Right Hand	Left Hand

	Material Material

	Length Length

1ft.

3ft.

6ft.

	Width Width

	Nut Type Nut Type


Hex	Coupling

Flange	Square

	Threading Threading

	Fully Threaded

	Travel Distance per Turn Travel Distance per Turn

0.2"

	Number of Thread Starts Number of Thread Starts

	Tensile Strength Tensile Strength

	Hardness Hardness

	Thread Fit Thread Fit

Class 2G

	Speed Ratio Speed Ratio

1:1

	Fastener Strength Grade/Class Fastener Strength Grade/Class

ASTM Grade B7

Grade 2

	Specifications Met Specifications Met

ASTM A108

ASTM A193

ASTM B16

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

RoHS Compliant

	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

	Height Height

1 7/64"

1 1/8"

2 1/4"

	Finish Finish

25 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. 360 brass components have excellent machinability and good corrosion resistance. 932 bearing bronze components are more wear resistant than brass components. They have good machinability and fair corrosion resistance. 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 1/8"-5	12"	1	1:1	0.2"	Class 2G	Grade 2	Rockwell B61	64,000	ASTM A108	000000000	000000
1 1/8"-5	3 ft.	1	1:1	0.2"	Class 2G	Grade 2	Rockwell B61	64,000	ASTM A108	000000000	00000
1 1/8"-5	6 ft.	1	1:1	0.2"	Class 2G	Grade 2	Rockwell B61	53,000	ASTM A108	000000000	00000
Alloy Steel
1 1/8"-5	12"	1	1:1	0.2"	Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	000000000	00000
1 1/8"-5	3 ft.	1	1:1	0.2"	Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	000000000	000000
1 1/8"-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 1/8"-5	3 ft.	1	1:1	0.2"	Class 2G	__	Rockwell B96	Not Rated	__	000000000	000000
1 1/8"-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 1/8"-5	3 ft.	1	1:1	0.2"	Class 2G	Grade 2	Rockwell B61	53,000	ASTM A108	000000000	000000
1 1/8"-5	6 ft.	1	1:1	0.2"	Class 2G	Grade 2	Rockwell B61	53,000	ASTM A108	000000000	00000
Alloy Steel
1 1/8"-5	3 ft.	1	1:1	0.2"	Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	000000000	000000
1 1/8"-5	6 ft.	1	1:1	0.2"	Class 2G	ASTM Grade B7	Rockwell C35	125,000	ASTM A193	000000000	000000

Coupling Nuts—Right-Hand Threaded

Coupling nuts connect two lead screws.

Carbon Steel
Thread Size	Ht.	Wd.	No. of Thread Starts	Speed Ratio	Travel Distance per Turn	Thread Fit	Hardness		Each
1 1/8"-5	3"	1 1/2"	1	1:1	0.2"	Class 2G	Rockwell B75	000000000	000000
18-8 Stainless Steel
1 1/8"-5	3"	1 1/2"	1	1:1	0.2"	Class 2G	Not Rated	000000000	00000

Coupling Nuts—Left-Hand Threaded

Coupling nuts connect two lead screws.

Carbon Steel
Thread Size	Ht.	Wd.	No. of Thread Starts	Speed Ratio	Travel Distance per Turn	Thread Fit	Hardness		Each
1 1/8"-5	3"	1 1/2"	1	1:1	0.2"	Class 2G	Rockwell B75	000000000	000000

Flange Nuts—Right-Hand Threaded

Flange nuts move objects along the length of a lead screw. Flange nuts have a wide machinable flange for custom mounting.

			Flange
Thread Size	Ht.	Dia.	Dia.	Thick.	No. of Thread Starts	Speed Ratio	Travel Distance per Turn	Thread Fit	Hardness		Each
932 Bearing Bronze
1 1/8"-5	2 1/4"	1 3/4"	2 3/4"	5/8"	1	1:1	0.2"	Class 2G	Not Rated	000000000	0000000

Flange Nuts—Left-Hand Threaded

Flange nuts move objects along the length of a lead screw. Flange nuts have a wide machinable flange for custom mounting.

			Flange
Thread Size	Ht.	Dia.	Dia.	Thick.	No. of Thread Starts	Speed Ratio	Travel Distance per Turn	Thread Fit	Hardness		Each
932 Bearing Bronze
1 1/8"-5	2 1/4"	1 3/4"	2 3/4"	5/8"	1	1:1	0.2"	Class 2G	Not Rated	000000000	0000000

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	Specifications Met		Each
1 1/8"-5	1 7/64"	1 13/16"	1	1:1	0.2"	Class 2G	Rockwell B75	__	000000000	000000
Zinc-Plated Carbon Steel
1 1/8"-5	1 7/64"	1 13/16"	1	1:1	0.2"	Class 2G	Rockwell B75	__	000000000	00000
360 Brass
1 1/8"-5	1 1/8"	1 3/4"	1	1:1	0.2"	Class 2G	Rockwell B75	ASTM B16	000000000	00000
18-8 Stainless Steel
1 1/8"-5	1 7/64"	1 3/4"	1	1:1	0.2"	Class 2G	Not Rated	__	000000000	00000

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	Specifications Met		Each
1 1/8"-5	1 7/64"	1 13/16"	1	1:1	0.2"	Class 2G	Grade 2	Rockwell B85	__	000000000	00000
360 Brass
1 1/8"-5	1 1/8"	1 3/4"	1	1:1	0.2"	Class 2G	__	Rockwell B75	ASTM B16	000000000	00000

Square Nuts—Right-Hand Threaded

Square nuts fasten and position lead screw components. Square nuts have large sides, which make them easier to grip with a wrench than hex nuts and keep them from rotating in channels and square holes.

360 Brass
Thread Size	Ht.	Wd.	No. of Thread Starts	Speed Ratio	Travel Distance per Turn	Thread Fit	Hardness	Specifications Met		Each
1 1/8"-5	1 1/8"	1 3/4"	1	1:1	0.2"	Class 2G	Rockwell B55	ASTM B16	000000000	000000

Clamping Acme Lead Screw Collars

Thread these one-piece collars onto an Acme lead screw to separate and position components, or use them as an end stop to limit travel. Tighten the clamping screw to secure.

To ensure compatibility, please select a collar that has the same thread type, direction, and size as your lead screw.

Black-oxide carbon steel collars have mild corrosion resistance.

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

Right-Hand Threaded
Thread Size	OD	Wd.	No. of Thread Starts	Hardness		Each
Black-Oxide 12L14 Carbon Steel
1 1/8"-5	2 3/8"	3/4"	1	Brinell 163	0000000	000000

Email Us

Selecting Compatible Lead Screws and Nuts

Acme Lead Screws and Nuts

Clamping Acme Lead Screw Collars