M16 Ball Screw Nuts | McMaster-Carr

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Selecting Compatible Lead 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.

Carbon Steel
Thread Size	Lg.	No. of Thread Starts	Travel Distance per Turn	Accuracy for Travel Distance per Turn	Root Dia.	Hardness	Tensile Strength, psi	Temp. Range, °F		Each
M16	500 mm	1	5mm	±0.210 mm per 300 mm	13.5mm	Rockwell C58	21,000	5° to 175°	0000000	0000000
M16	1,000 mm	1	5mm	±0.210 mm per 300 mm	13.5mm	Rockwell C58	21,000	5° to 175°	000000	000000

Platform Ball Nuts—Right-Hand Threaded

Alloy Steel
Thread Size	Lg., mm	Wd., mm	Ht., mm	Center Ht., mm	No. of Thread Starts	Travel Distance per Turn, mm	Hardness	Dynamic Thrust Load Cap., lbs.	Max. Backlash, mm	Temp. Range, °F		Each
M16	36	42	32.5	16	1	5	Rockwell C58	1,200	0.1	5° to 175°	0000000	0000000

Flange Ball Nuts—Right-Hand Threaded

				Flange
	Thread Size	Lg.	Dia.	Wd.	Ht.	Thick.	No. of Thread Starts	Travel Distance per Turn	Hardness	Dynamic Thrust Load Cap., lbs.	Max. Backlash		Each
Alloy Steel
C	M16	40mm	34mm	54mm	40mm	10mm	1	5mm	Rockwell C58	1,200	0.1mm	0000000	0000000

Fast-Travel Ball Screws and Nuts

Multiple thread channels (also known as thread starts) create faster linear travel than ball screws with a single thread start. Internal ball bearings provide smooth low-friction travel in applications that require high speeds, accurate positioning, and repeatable movement. To ensure compatibility, select components that have the same thread size and number of thread starts. 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.

Carbon steel ball screws and nuts are case hardened, so they resist wear better than standard carbon steel. However, they are less corrosion resistant than black-oxide alloy steel screws and nuts.

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.

Carbon Steel
Thread Size	Lg.	No. of Thread Starts	Travel Distance per Turn	Accuracy for Travel Distance per Turn	Root Dia.	Hardness	Tensile Strength, psi	Temperature Range, °F		Each
M16	500mm	4	16mm	±0.05 mm per 300 mm	13.3mm	Rockwell C56	95,000	32° to 150°	00000000	000000
M16	1,000mm	4	16mm	±0.05 mm per 300 mm	13.3mm	Rockwell C56	95,000	32° to 150°	00000000	000000

Externally Threaded Ball Nuts—Right-Hand Threaded

Carbon Steel
	Thread Size	Lg.	Dia.	No. of Thread Starts	Travel Distance per Turn	External Thread Size	Hardness	Dynamic Thrust Load Cap., lbs.	Max. Backlash	Temperature Range, °F		Each
B	M16	50mm	39mm	4	16mm	M30	Rockwell C56	1,500	0.04mm	32° to 150°	00000000	0000000