5/8"-5 Rods | McMaster-Carr

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	System of Measurement System of Measurement

Inch

	Thread Size Thread Size	Show

5/8"-5

	Thread Size Thread Size	Hide

	Thread Type Thread Type

Acme

Ball

	Component Component

	Ball Nut
	Ball Screw
	Ball Screw with One Machined End
	Lead Screw
	Nut

	Thread Direction Thread Direction


Right Hand	Left Hand

	Length Length

	Material Material

	Threading Threading


Fully Threaded	Partially Threaded

	Nut Type Nut Type


Flange	Round

Externally Threaded

	Travel Distance per Turn Travel Distance per Turn

0.2"

	Number of Thread Starts Number of Thread Starts

	Tensile Strength Tensile Strength

	Root Diameter Root Diameter

0.5"

0.503"

	Hardness Hardness

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

DFARS Specialty Metals
COTS-Exempt

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

RoHS Compliant

RoHS Compliant with
Exemptions

	Thread Fit Thread Fit

Class 2C

	Speed Ratio Speed Ratio

1:1

	Maximum Temperature Maximum Temperature

Less than 500° F

	Minimum Temperature Minimum Temperature

-99° to 0° F

Greater than 0° F

	Dynamic Thrust Load Capacity Dynamic Thrust Load Capacity

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

REACH Compliant

	Heat Treatment Heat Treatment

Hardened

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37 Products

Selecting Compatible 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.

Carbon steel lead screws and flanges have good machinability. Black-oxide alloy steel lead screws are hard and strong. They have mild corrosion resistance. Cast iron nuts have good machinability and high strength. 932 bearing bronze and 673 bronze nuts are wear resistant. They have good machinability and fair corrosion resistance. PET plastic nuts are lightweight and corrosion resistant.

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

1018 Carbon 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
5/8"-5	3 ft.	1	1:1	0.2"	±0.009" per ft.	Class 2C	Not Rated	Not Rated	000000000	000000
5/8"-5	6 ft.	1	1:1	0.2"	±0.009" per ft.	Class 2C	Not Rated	Not Rated	000000000	000000
Black-Oxide 4140 Alloy Steel
5/8"-5	3 ft.	1	1:1	0.2"	±0.009" per ft.	Class 2C	Brinell 271	125,000	000000000	00000
5/8"-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
5/8"-5	3	1	1:1	0.2"	±0.009" per ft.	Class 2C	Brinell 271	125,000	000000000	000000
5/8"-5	6	1	1:1	0.2"	±0.009" per ft.	Class 2C	Brinell 271	125,000	000000000	000000

Round Nuts—Right-Hand Threaded

Cast Iron
Thread Size	Lg.	Dia.	No. of Thread Starts	Speed Ratio	Travel Distance per Turn	Thread Fit	Hardness	Dynamic Thrust Load Cap., lbs.	Temperature Range, °F		Each
5/8"-5	1 1/4"	1.859"	1	1:1	0.2"	Class 2C	Brinell 217	Not Rated	__	000000000	000000
932 Bearing Bronze
5/8"-5	1 1/4"	1.859"	1	1:1	0.2"	Class 2C	Brinell 65	2,000	__	0000000	00000
PET Plastic
5/8"-5	1 1/4"	1.859"	1	1:1	0.2"	Class 2C	Not Rated	1,000	15° to 175°	0000000	00000

Round Nuts—Left-Hand Threaded

Cast Iron
Thread Size	Lg.	Dia.	No. of Thread Starts	Speed Ratio	Travel Distance per Turn	Thread Fit	Hardness	Dynamic Thrust Load Cap., lbs.		Each
5/8"-5	1 1/4"	1.859"	1	1:1	0.2"	Class 2C	Brinell 217	Not Rated	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
5/8"-5	1"	1.125"	1	1:1	0.2"	15/16"-16	1/2"	Class 2C	Brinell 70	Not Rated	000000000	000000

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
5/8"-5	1"	1.125"	1	1:1	0.2"	15/16"-16	1/2"	Class 2C	Brinell 70	Not Rated	000000000	000000

Flanges

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

1215 Carbon Steel
Flange Thread Size	Flange Dia.	Flange Thick.	Bolt Circle Dia.	Flange Hardness		Each
15/16"-16	2 5/8"	17/32"	2 3/32"	Not Rated	000000000	000000
303 Stainless Steel
15/16"-16	2 5/8"	17/32"	2 3/32"	Brinell 140	0000000	00000

Ball Screws and Nuts

Internal ball bearings provide smooth low-friction travel in applications that require high speeds, accurate positioning, and repeatable movement. Also known as single-start ball screws and nuts, they have a single thread that runs the length of the screw. They operate with more torque than fast-travel ball screws and nuts. To ensure compatibility, select components that have the same thread direction and size. Ball nuts are furnished with a tube to keep ball bearings in place. Do not remove the tube until you are ready to install the nuts onto the screws.

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

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

Ball Screws—Right-Hand Threaded

Root diameter indicates the diameter the ball screw will be after machining away the threads.

Alloy Steel
Thread Size	Lg., ft.	No. of Thread Starts	Travel Distance per Turn	Accuracy for Travel Distance per Turn	Root Dia.	Hardness	Tensile Strength, psi	Temperature Range, °F		Each
5/8"-5	1	1	0.2"	±0.004" per ft.	0.503"	Rockwell C56	85,000	-40° to 300°	00000000	000000
5/8"-5	2	1	0.2"	±0.004" per ft.	0.503"	Rockwell C56	85,000	-40° to 300°	00000000	00000
5/8"-5	3	1	0.2"	±0.004" per ft.	0.503"	Rockwell C56	85,000	-40° to 300°	00000000	00000
5/8"-5	4	1	0.2"	±0.004" per ft.	0.503"	Rockwell C56	85,000	-40° to 300°	00000000	000000
5/8"-5	5	1	0.2"	±0.004" per ft.	0.503"	Rockwell C56	85,000	-40° to 300°	00000000	000000
5/8"-5	6	1	0.2"	±0.004" per ft.	0.503"	Rockwell C56	85,000	-40° to 300°	00000000	000000

Ball Screws—Left-Hand Threaded

Root diameter indicates the diameter the ball screw will be after machining away the threads.

Alloy Steel
Thread Size	Lg., ft.	No. of Thread Starts	Travel Distance per Turn	Accuracy for Travel Distance per Turn	Root Dia.	Hardness	Tensile Strength, psi	Temperature Range, °F		Each
5/8"-5	1	1	0.2"	±0.004" per ft.	0.503"	Rockwell C56	85,000	-40° to 300°	00000000	000000
5/8"-5	2	1	0.2"	±0.004" per ft.	0.503"	Rockwell C56	85,000	-40° to 300°	00000000	00000
5/8"-5	3	1	0.2"	±0.004" per ft.	0.503"	Rockwell C56	85,000	-40° to 300°	00000000	00000
5/8"-5	6	1	0.2"	±0.004" per ft.	0.503"	Rockwell C56	85,000	-40° to 300°	00000000	000000

Ball Screws with One Machined End—Right-Hand Threaded

Ball screws with one machined end fit into an end support and are ready to connect to a motor. To adjust the length, the non-machined end can be cut to size.

Root diameter indicates the diameter the ball screw will be after machining away the threads.

							Machined End			Keyway
Thread Size	Root Dia.	Lg., ft.	No. of Thread Starts	Travel Distance per Turn	Accuracy for Travel Distance per Turn	Shoulder Lg.	Overall Lg.	Thread Size	Dia.	Lg.	Wd.	Hardness	Tensile Strength, psi	Temperature Range, °F		Each
Alloy Steel
5/8"-5	0.5"	2	1	0.2"	±0.004" per ft.	1 63/64"	3 19/64"	0.469"-32	13/32"	1 1/4"	1/8"	Rockwell C56	85,000	-40° to 300°	00000000	0000000
5/8"-5	0.5"	4	1	0.2"	±0.004" per ft.	1 63/64"	3 19/64"	0.469"-32	13/32"	1 1/4"	1/8"	Rockwell C56	85,000	-40° to 300°	00000000	000000
5/8"-5	0.5"	6	1	0.2"	±0.004" per ft.	1 63/64"	3 19/64"	0.469"-32	13/32"	1 1/4"	1/8"	Rockwell C56	85,000	-40° to 300°	00000000	000000

Externally-Threaded Ball Nuts—Right-Hand Threaded

Secure a way wiper on the end of a ball nut to sweep chips and other contaminants out of the way as it moves across the ball screw.

Black-Oxide Alloy Steel
	Thread Size	Lg.	Wd.	Ht.	No. of Thread Starts	Travel Distance per Turn	External Thread Size	Hardness	Dynamic Thrust Load Cap., lbs.	Max. Backlash	Temperature Range, °F		Each
B	5/8"-5	1 23/32"	1"	1"	1	0.2"	15/16"-16	Rockwell C56	770	0.015"	-40° to 300°	00000000	000000

Externally-Threaded Ball Nuts—Left-Hand Threaded

Secure a way wiper on the end of a ball nut to sweep chips and other contaminants out of the way as it moves across the ball screw.

Ball Nuts														Way Wipers
	Thread Size	Lg.	Wd.	Ht.	No. of Thread Starts	Travel Distance per Turn	External Thread Size	Hardness	Dynamic Thrust Load Cap., lbs.	Max. Backlash	Temperature Range, °F		Each		Each
Black-Oxide Alloy Steel
B	5/8"-5	1 45/64"	1"	1"	1	0.2"	15/16"-16	Rockwell C56	770	0.015"	-40° to 300°	00000000	000000	0000000	000000

Flange Ball Nuts—Right-Hand Threaded

					Flange
	Thread Size	Lg.	Wd.	Ht.	Dia.	Thick.	No. of Thread Starts	Travel Distance per Turn	Bolt Circle Dia.	Hardness	Dynamic Thrust Load Cap., lbs.	Max. Backlash	Temperature Range, °F		Each
Black-Oxide Alloy Steel
D	5/8"-5	1 23/32"	1"	1"	2 39/64"	17/32"	1	0.2"	2 3/32"	Rockwell C56	770	0.015"	-40° to 300°	00000000	0000000

Flange Ball Nuts—Left-Hand Threaded

					Flange
	Thread Size	Lg.	Wd.	Ht.	Dia.	Thick.	No. of Thread Starts	Travel Distance per Turn	Bolt Circle Dia.	Hardness	Dynamic Thrust Load Cap., lbs.	Max. Backlash	Temperature Range, °F		Each
Black-Oxide Alloy Steel
D	5/8"-5	1 45/64"	1"	1"	2 19/32"	17/32"	1	0.2"	2 3/32"	Rockwell C56	770	0.015"	-40° to 300°	00000000	0000000

Corrosion-Resistant Ball Screws and Nuts

Suitable for use in harsh environments, these ball screws and nuts are made of stainless steel. Internal ball bearings provide smooth low-friction travel in applications that require high speeds, accurate positioning, and repeatable movement. Also known as single-start ball screws and nuts, they have a single thread that runs the length of the screw. They operate with more torque than fast-travel ball screws and nuts. To ensure compatibility, select components that have the same thread size. Ball nuts are furnished with a tube to keep ball bearings in place. Do not remove the tube until you are ready to install the nuts onto the screws.

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

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

Ball Screws—Right-Hand Threaded

Root diameter indicates the diameter the ball screw will be after machining away the threads.

17-4 PH Stainless Steel
Thread Size	Lg., ft.	No. of Thread Starts	Travel Distance per Turn	Accuracy for Travel Distance per Turn	Root Dia.	Hardness	Tensile Strength, psi	Temperature Range, °F		Each
5/8"-5	2	1	0.2"	±0.004" per ft.	0.5"	Rockwell C38	145,000	-65° to 300°	000000	0000000
5/8"-5	4	1	0.2"	±0.004" per ft.	0.5"	Rockwell C38	145,000	-65° to 300°	000000	000000
5/8"-5	6	1	0.2"	±0.004" per ft.	0.5"	Rockwell C38	145,000	-65° to 300°	000000	000000

Externally Threaded Ball Nuts—Right-Hand Threaded

17-4 PH Stainless Steel
	Thread Size	Lg.	Wd.	Ht.	No. of Thread Starts	Travel Distance per Turn	External Thread Size	Hardness	Dynamic Thrust Load Cap., lbs.	Max. Backlash	Temperature Range, °F		Each
B	5/8"-5	1 23/32"	1"	1"	1	0.2"	15/16"-16	Rockwell C38	170	0.007"	-65° to 300°	0000000	0000000

Flange Ball Nuts—Right-Hand Threaded

					Flange
	Thread Size	Lg.	Wd.	Ht.	Dia.	Thick.	No. of Thread Starts	Travel Distance per Turn	Bolt Circle Dia.	Hardness	Dynamic Thrust Load Cap., lbs.	Max. Backlash	Temperature Range, °F		Each
17-4 PH Stainless Steel
D	5/8"-5	1 47/64"	1"	1"	2 19/32"	17/32"	1	0.2"	2 3/32"	Rockwell C38	170	0.007"	-65° to 300°	0000000	0000000

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Selecting Compatible Lead Screws and Nuts

Precision Acme Lead Screws and Nuts

Ball Screws and Nuts

Corrosion-Resistant Ball Screws and Nuts