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Thread Size Thread Size |
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Nut Type Nut Type |
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Locknut | Flange |
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Externally Threaded |
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For Spanner Wrench Style For Spanner Wrench Style |
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Thread Spacing Thread Spacing |
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Face Style Face Style |
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Specifications Met Specifications Met |
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Insert Maximum Temperature Insert Maximum Temperature |
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Thread Direction Thread Direction |
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Dynamic Thrust Load Capacity Dynamic ThrustLoad Capacity |
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Maximum Backlash Maximum Backlash |
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Hardness Hardness |
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Maximum Temperature Maximum Temperature |
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Shaft collars are useful for holding and positioning components on a shaft. They can also serve as mechanical stops and stroke limiters.
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With a nylon insert that grips your threaded shaft or spindle without damaging the threads, these locknuts—sometimes called shaft nuts—keep bearings, bushings, gears, and pulleys in place. They won’t shake loose from vibration. However, their nylon insert also means you shouldn’t use these locknuts in applications with high temperatures. Their sides are slotted, so you can tighten and loosen them with a spanner wrench. To reduce the total size and weight of your assembly, they have chamfered edges.
All meet international standards for bearing locknut dimensions.
303 stainless steel locknuts are nearly as strong as carbon steel but won’t rust in outdoor, washdown, and other corrosive environments.
When choosing your thread spacing, consider the precision of your application. The finer the threads, the more control you have when making adjustments.
For technical drawings and 3-D models, click on a part number.
Thread | 303 Stainless Steel | ||||||
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Size | Spacing | OD | Wd. | Insert Max. Temp., °F | Specifications Met | Each | |
Chamfered Face | |||||||
0.391"-32 | Extra Fine | 3/4" | 9/32" | 160° | ANSI/ABMA 8.2 | 0000000 | 000000 |
0.469"-32 | Extra Fine | 7/8" | 3/8" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 |
0.586"-32 | Extra Fine | 1" | 3/8" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 |
0.664"-32 | Extra Fine | 1 1/8" | 13/32" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 |
0.781"-32 | Extra Fine | 1 3/8" | 13/32" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 |
0.969"-32 | Extra Fine | 1 9/16" | 15/32" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 |
1.173"-18 | Extra Fine | 1 3/4" | 15/32" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 |
1.312"-18 | Extra Fine | 2 1/16" | 1/2" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 |
1.376"-18 | Extra Fine | 2 1/16" | 1/2" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 |
1.563"-18 | Extra Fine | 2 1/4" | 1/2" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 |
1.767"-18 | Extra Fine | 2 17/32" | 1/2" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 |
1.967"-18 | Extra Fine | 2 11/16" | 9/16" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 |
2.157"-18 | Extra Fine | 2 31/32" | 9/16" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 |
2.360"-18 | Extra Fine | 3 5/32" | 19/32" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 |
2.548"-18 | Extra Fine | 3 3/8" | 5/8" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 |
2.751"-18 | Extra Fine | 3 5/8" | 5/8" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 |
2.933"-12 | Extra Fine | 3 7/8" | 21/32" | 160° | ANSI/ABMA 8.2 | 0000000 | 000000 |
3.137"-12 | Extra Fine | 4 1/8" | 5/8" | 160° | ANSI/ABMA 8.2 | 0000000 | 000000 |
3.918"-12 | Extra Fine | 5 3/16" | 13/16" | 160° | ANSI/ABMA 8.2 | 0000000 | 000000 |
4.716"-12 | Extra Fine | 6 1/8" | 15/16" | 160° | ANSI/ABMA 8.2 | 0000000 | 000000 |
Thread | 303 Stainless Steel | |||||||
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Size | Pitch, mm | Spacing | OD, mm | Wd., mm | Insert Max. Temp., °F | Specifications Met | Each | |
Chamfered Face | ||||||||
M10 | 0.75 | Extra Fine | 18 | 7 | 160° | ISO 2982-2 | 0000000 | 000000 |
M12 | 1 | Extra Fine | 22 | 8 | 160° | ISO 2982-2 | 0000000 | 00000 |
M15 | 1 | Extra Fine | 25 | 8.5 | 160° | ISO 2982-2 | 0000000 | 00000 |
M20 | 1 | Extra Fine | 32 | 10 | 160° | ISO 2982-2 | 0000000 | 00000 |
M22 | 1 | Extra Fine | 34 | 10.5 | 160° | ISO 2982-2 | 0000000 | 00000 |
M25 | 1.5 | Extra Fine | 38 | 11 | 160° | ISO 2982-2 | 0000000 | 00000 |
M30 | 1.5 | Extra Fine | 45 | 11.5 | 160° | ISO 2982-2 | 0000000 | 00000 |
M35 | 1.5 | Extra Fine | 52 | 12 | 160° | ISO 2982-2 | 0000000 | 00000 |
M50 | 1.5 | Extra Fine | 70 | 13 | 160° | ISO 2982-2 | 0000000 | 00000 |
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.
Thread Size | Lg. | Wd. | Ht. | Dia. | No. of Thread Starts | Travel Distance per Turn | External Thread Size | Hardness | Dynamic Thrust Load Cap., lbs. | Max. Backlash | Temperature Range, °F | Each | ||
17-4 PH Stainless Steel | ||||||||||||||
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A | 3/8"-8 | 1" | __ | __ | 3/4" | 1 | 0.125" | 0.664"-32 | Rockwell C38 | 25 | 0.007" | -65° to 300° | 000000 | 0000000 |
B | 5/8"-5 | 1 23/32" | 1" | 1" | __ | 1 | 0.2" | 15/16"-16 | Rockwell C38 | 170 | 0.007" | -65° to 300° | 0000000 | 000000 |
Flange | ||||||||||||||||
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Thread Size | Lg. | Wd. | Ht. | Dia. | 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 | ||||||||||||||||
C | 3/8"-8 | 1" | __ | __ | 3/4" | 1 19/32" | 17/64" | 1 | 0.125" | 1 15/64" | Rockwell C38 | 25 | 0.007" | -65° to 300° | 0000000 | 0000000 |
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 | 000000 |
Multiple thread channels (also known as thread starts) create faster linear travel than ball screws with a single thread start. 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. 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.
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 | |
17-4 PH Stainless Steel | |||||||||||
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1/2"-4 | 1 3/4" | 1 1/16" | 2 | 0.5" | 15/16"-16 | Rockwell C38 | 140 | 0.007" | -65° to 300° | 0000000 | 0000000 |
3/4"-4 | 2 15/16" | 1 5/16" | 2 | 0.5" | 1 1/4"-16 | Rockwell C38 | 600 | 0.007" | -65° to 300° | 0000000 | 000000 |
Flange | |||||||||||||
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Thread Size | Lg. | Dia. | 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 | |||||||||||||
1/2"-4 | 1 29/32" | 1 1/16" | 2 19/32" | 17/32" | 2 | 0.5" | 2 3/32" | Rockwell C38 | 140 | 0.007" | -65° to 300° | 0000000 | 0000000 |
3/4"-4 | 2 15/16" | 1 5/16" | 2 19/32" | 17/32" | 2 | 0.5" | 2 3/32" | Rockwell C38 | 600 | 0.007" | -65° to 300° | 0000000 | 000000 |