About Linear Bearings
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About Ball and Roller Bearings
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Selecting Compatible Lead Screws and Nuts
More
About Shaft Collars
Shaft collars are useful for holding and positioning components on a shaft. They can also serve as mechanical stops and stroke limiters.
More
Ball Bearings
Shielded bearings block out dust and other contaminants, but do not dissipate heat as efficiently as open bearings.
For technical drawings and 3-D models, click on a part number.

Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
R22-2Z | 1 3/8" | 2 1/2" | 9/16" | Steel | 3,550 | 2,300 | 6,300 | Lubricated | -20° to 230° | ABEC-1 | 000000000 | 000000 |
R24-2Z | 1 1/2" | 2 5/8" | 9/16" | Steel | 3,750 | 2,700 | 5,900 | Lubricated | -20° to 230° | ABEC-1 | 000000000 | 00000 |
High-Load Ball Bearings
With a wider profile than standard ball bearings, these rugged bearings are good for handling heavy loads at low speeds.
Open bearings dissipate heat more efficiently than shielded and sealed bearings.
Shielded bearings block out dust and other contaminants, but do not dissipate heat as efficiently as open bearings.
Sealed bearings block out dust and other contaminants better than open and shielded bearings, but retain the most heat.
For technical drawings and 3-D models, click on a part number.

Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
1638 | 3/4" | 2" | 9/16" | Steel | 2,950 | 1,350 | 5,000 | Lubricated | -20° to 250° | Not Rated | 0000000 | 000000 |
1641 | 1" | 2" | 9/16" | Steel | 2,950 | 1,350 | 5,000 | Lubricated | -20° to 250° | Not Rated | 0000000 | 00000 |

Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
1638-2Z | 3/4" | 2" | 9/16" | Steel | 2,950 | 1,350 | 5,000 | Lubricated | -20° to 250° | Not Rated | 0000000 | 000000 |
1640-2Z | 7/8" | 2" | 9/16" | Steel | 2,950 | 1,350 | 5,000 | Lubricated | -20° to 250° | Not Rated | 0000000 | 00000 |
1641-2Z | 1" | 2" | 9/16" | Steel | 2,950 | 1,350 | 5,000 | Lubricated | -20° to 250° | Not Rated | 0000000 | 00000 |

Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
1638-2RS | 3/4" | 2" | 9/16" | Steel | 2,950 | 1,350 | 5,000 | Lubricated | -20° to 250° | Not Rated | 0000000 | 000000 |
1640-2RS | 7/8" | 2" | 9/16" | Steel | 2,950 | 1,350 | 5,000 | Lubricated | -20° to 250° | Not Rated | 0000000 | 00000 |
1641-2RS | 1" | 2" | 9/16" | Steel | 2,950 | 1,350 | 5,000 | Lubricated | -20° to 250° | Not Rated | 0000000 | 00000 |
Light Duty Ball Bearings



Use these bearings where high speed and precision are not a concern.
Open bearings dissipate heat more efficiently than shielded and sealed bearings.
Shielded bearings block out dust and other contaminants, but do not dissipate heat as efficiently as open bearings.
Sealed bearings block out dust and other contaminants better than open and shielded bearings, but retain the most heat.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Bearing Trade Number | For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
Open | ||||||||||||
__ | 1/2" | 1 3/4" | 9/16" | Steel | 1,400 | 370 | 1,200 | Lubricated | -20° to 250° | Not Rated | 0000000 | 000000 |
__ | 3/4" | 1 3/4" | 9/16" | Steel | 1,550 | 390 | 1,200 | Lubricated | -20° to 250° | Not Rated | 0000000 | 00000 |
Shielded | ||||||||||||
3038-2Z | 3/4" | 2" | 9/16" | Steel | 1,450 | 1,350 | 2,500 | Lubricated | -20° to 250° | Not Rated | 0000000 | 00000 |
3040-2Z | 7/8" | 2" | 9/16" | Steel | 1,450 | 1,350 | 2,500 | Lubricated | -20° to 250° | Not Rated | 0000000 | 00000 |
3041-2Z | 1" | 2" | 9/16" | Steel | 1,450 | 1,350 | 2,500 | Lubricated | -20° to 250° | Not Rated | 0000000 | 00000 |
Sealed | ||||||||||||
3038-2RS | 3/4" | 2" | 9/16" | Steel | 1,450 | 1,350 | 2,500 | Lubricated | -20° to 250° | Not Rated | 0000000 | 00000 |
3040-2RS | 7/8" | 2" | 9/16" | Steel | 1,450 | 1,350 | 2,500 | Lubricated | -20° to 250° | Not Rated | 0000000 | 00000 |
3041-2RS | 1" | 2" | 9/16" | Steel | 1,450 | 1,350 | 2,500 | Lubricated | -20° to 250° | Not Rated | 0000000 | 00000 |
Flanged Ball Bearings
Open bearings dissipate heat more efficiently than shielded and sealed bearings.
Sealed bearings block out dust and other contaminants better than open and shielded bearings, but retain the most heat.
Bearings with extended inner ring provide additional shaft support.
For technical drawings and 3-D models, click on a part number.


with Extended
Inner Ring
Flange | Inner Ring | Radial Load Cap., lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | For Housing ID | Wd. | OD | Thick. | OD | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
1/2" | 1 3/4" | 9/16" | 1.875" | 0.06" | 1.031" | 0.625" | Steel | 1,400 | 370 | 1,200 | Lubricated | -20° to 250° | Not Rated | 00000000 | 000000 |
3/4" | 1 3/4" | 9/16" | 1.875" | 0.06" | 1" | 0.625" | Steel | 1,550 | 450 | 1,200 | Lubricated | -20° to 250° | Not Rated | 00000000 | 00000 |


with Extended
Inner Ring
Flange | Inner Ring | Radial Load Cap., lbs. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | For Housing ID | Wd. | OD | Thick. | OD | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | ABEC Rating | Each | |
3/4" | 2" | 9/16" | 2.125" | 0.06" | 1.188" | 0.625" | Steel | 1,450 | 1,350 | 2,500 | Lubricated | -20° to 250° | Not Rated | 00000000 | 000000 |
Tapered-Roller Bearings


Found anywhere from machine tool spindles to conveyor rollers, these bearings have a two-piece design that allows for adjustment.
Radial Load Cap., lbs. | Thrust Load Cap., lbs. | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | For Housing ID | Wd. | Bearing Trade Number | Dynamic | Static | Dynamic | Static | Max. Speed, rpm | Lubrication | Temp. Range, °F | Each | |
Steel Ring | ||||||||||||
Open | ||||||||||||
3/4" | 1 15/16" | 9/16" | 09067/09195 | 2,300 | 9,100 | 1,050 | 7,050 | 4,900 | Required | -60° to 200° | 00000000 | 000000 |
1" | 2 7/16" | 9/16" | 15100/15245 | 2,700 | 12,100 | 1,600 | 12,400 | 3,300 | Required | -60° to 200° | 0000000 | 00000 |
1 1/8" | 2 29/64" | 9/16" | 15113/15245 | 2,700 | 12,100 | 1,600 | 12,400 | 3,300 | Required | -60° to 200° | 00000000 | 00000 |
Needle-Roller Bearings

Also known as drawn-cup roller bearings, these are our thinnest roller bearings. The outer ring is drawn out to form a lip that holds the bearing together. Bearings take on the shape of their housing and may be oblong prior to installation.
Open bearings dissipate heat more efficiently than sealed bearings.
Sealed bearings block out dust better than open bearings, but retain more heat.
For technical drawings and 3-D models, click on a part number.
Radial Load Cap., lbs. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | For Housing ID | Wd. | Ring Material | Dynamic | Static | Max. Speed, rpm | Lubrication | For Shaft Surface Smoothness (Ra), microinch | Temp. Range, °F | Specifications Met | Each | |
Open | ||||||||||||
5/16" | 1/2" | 9/16" | Steel | 1,300 | 1,480 | 29,000 | Required | 8 | -20° to 280° | DIN 281, ISO 76 | 00000000 | 00000 |
Sealed—One Side | ||||||||||||
3/8" | 9/16" | 9/16" | Steel | 1,300 | 1,450 | 15,000 | Lubricated | 8 | -20° to 210° | __ | 00000000 | 00000 |
1/2" | 11/16" | 9/16" | Steel | 1,550 | 2,000 | 11,700 | Lubricated | 8 | -20° to 210° | __ | 00000000 | 0000 |
5/8" | 13/16" | 9/16" | Steel | 1,800 | 2,700 | 16,000 | Lubricated | 8 | 0° to 210° | DIN 281, ISO 76 | 0000000 | 00000 |
3/4" | 1" | 9/16" | Steel | 2,200 | 2,800 | 7,800 | Lubricated | 8 | -20° to 210° | __ | 00000000 | 00000 |
7/8" | 1 1/8" | 9/16" | Steel | 2,500 | 3,550 | 6,800 | Lubricated | 8 | -20° to 210° | __ | 00000000 | 00000 |
Linear Ball Bearings for Support Rail Shafts
Mount these bearings on a support rail shaft for applications requiring maximum rigidity. All have end seals to keep lubricant in and dirt out. To install, slide bearings into a housing (not included). For bearings with retaining ring grooves, secure with two retaining rings (sold individually).
Bearings with stainless steel balls are more corrosion resistant than bearings with steel balls.
Self-aligning bearings compensate for shaft misalignment.
Fixed-alignment bearings are for use where shaft misalignment is unlinkely.
For technical drawings and 3-D models, click on a part number.

Load Capacity, lbs. | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | Overall Lg. | Wd. | For Housing ID | With Retaining Ring Grooves | Dynamic | Static | Max. Temp., °F | For Shaft Material | Each | |
Acetal Bearings with Steel Balls | ||||||||||
1" | 2 1/4" | 9/16" | 1.5625" - 1.5635" | No | 810 | 720 | 176° | Stainless Steel, Steel | 0000000 | 000000 |

Bearings | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Load Capacity, lbs. | External Retaining Rings | |||||||||||||
For Shaft Dia. | Overall Lg. | Wd. | For Housing ID | With Retaining Ring Grooves | Retaining Ring Groove End-to-End Lg. | Dynamic | Static | Min. Temp., °F | Max. Temp., °F | For Shaft Material | Each | Each | ||
440C Stainless Steel Bearings with Stainless Steel Balls | ||||||||||||||
1" | 2 1/4" | 9/16" | 1.5625" - 1.5630" | Yes | 1 3/4" | 220 | 350 | -4° | 248° | Stainless Steel, Steel | 0000000 | 0000000 | 0000000 | 00000 |
Steel Bearings with Steel Balls | ||||||||||||||
1" | 2 1/4" | 9/16" | 1.5625" - 1.5635" | Yes | 1.76" | 220 | 350 | Not Rated | 176° | Stainless Steel, Steel | 00000000 | 00000 | 0000000 | 0000 |
High-Temperature Linear Ball Bearings for Support Rail Shafts

The choice for low-friction motion in high-temperature environments. Mount these bearings on a support rail shaft for applications requiring maximum rigidity. They have a fixed-alignment design for applications where shaft misalignment is unlikely. To install, slide bearings into a housing (not included) and secure in place with two retaining rings (sold separately).
For technical drawings and 3-D models, click on a part number.
High-Load Linear Ball Bearings for Support Rail Shafts

Designed for heavy loads, these bearings have higher load capacities than comparable standard linear ball bearings for support rails. Use them for applications that require maximum rigidity. All are self-aligning to compensate for shaft misalignment. To install, slide bearings into a housing (not included).
Bearings with stainless steel balls are more corrosion resistant than bearings with steel balls.
For technical drawings and 3-D models, click on a part number.
Load Capacity, lbs. | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | Overall Lg. | Wd. | For Housing ID | With Retaining Ring Grooves | With End Seals | Dynamic | Static | Max. Temperature, ° F | For Shaft Material | Each | |
Acetal Plastic Bearings with Stainless Steel Balls | |||||||||||
1" | 2 1/4" | 9/16" | 1.5625" - 1.5635" | No | Yes | 810 | 720 | 176° | Stainless Steel, Steel | 0000000 | 0000000 |
Linear Sleeve Bearings for Support Rail Shafts

Mount these bearings on a support rail shaft for applications requiring maximum rigidity. To install, slide bearings into a housing (not included) and secure with two retaining rings (sold individually).
Bearings with 0.0005" shaft clearance are best for precision applications. Bearings with 0.001" or 0.0015" shaft clearance are less likely to bind on your shaft than bearings with 0.0005" shaft clearance.
Self Aligning—Bearings compensate for shaft misalignment.
Fixed Alignment—Bearings are for use where shaft misalignment is unlikely.
Frelon-lined bearings are wear and chemical resistant. Note: Not for use with bare aluminum, chrome-plated steel, or 300 series stainless steel shafts.
PTFE-lined bearings are chemical resistant and nonabrasive. They have a ceramic coating for added corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Bearings | External Retaining Rings | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | Shaft Clearance | Overall Lg. | Wd. | For Housing ID | Retaining Ring Groove End-to-End Lg. | Dynamic Load Cap. | Static Load Cap., lbs. | Temperature Range, ° F | For Shaft Material | Each | Each | ||
Self Aligning | |||||||||||||
PTFE-Lined 6061 Aluminum Bearings | |||||||||||||
1" | 0.001" | 2 1/4" | 9/16" | 1.5625" - 1.5630" | 1.765" | 600 lbs. @ 100 fpm | 11,000 | -400° to 375° | Aluminum, Stainless Steel | 0000000 | 000000 | 0000000 | 00000 |
Fixed Alignment | |||||||||||||
Frelon-Lined 6061 Aluminum Bearings | |||||||||||||
1" | 0.0005" | 2 1/4" | 9/16" | 1.5635" - 1.5650" | 1.765" | 450 lbs. @ 100 fpm | 7,000 | -400° to 400° | Steel | 00000000 | 00000 | 0000000 | 0000 |
1" | 0.0015" | 2 1/4" | 9/16" | 1.5635" - 1.5650" | 1.765" | 450 lbs. @ 100 fpm | 7,000 | -400° to 400° | Steel | 00000000 | 00000 | 0000000 | 0000 |
Food Industry Linear Sleeve Bearings for Support Rail Shafts

These bearings for use in food applications also have excellent chemical and corrosion resistance. Mount them on a support rail shaft for applications requiring maximum rigidity. They have a fixed-alignment design for applications where shaft misalignment is unlikely. To install, slide bearings into a housing (not included) and secure in place with two retaining rings (sold individually).
For technical drawings and 3-D models, click on a part number.
Bearings | External Retaining Rings | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | Overall Lg. | Wd. | For Housing ID | Retaining Ring Groove End-to-End Lg. | Dynamic Load Capacity | Static Load Capacity, lbs. | Shaft Clearance | Temperature Range, ° F | For Shaft Material | Each | Each | ||
Fixed Alignment | |||||||||||||
Rulon 641-Lined 304 Stainless Steel Bearings | |||||||||||||
1" | 2 1/4" | 9/16" | 1.5625" - 1.5630" | 1.765" | 200 lbs. @ 100 fpm | 2,200 | 0.001" | -400° to 375° | Aluminum, Stainless Steel | 0000000 | 000000 | 0000000 | 00000 |
Mounted Linear Ball Bearings for Support Rail Shafts

Mount these bearings on a support rail shaft for applications requiring maximum rigidity. End seals keep lubricant in and dirt out. Self-aligning bearings compensate for shaft misalignment. Fixed-alignment bearings are for use where shaft misalignment is unlikely.
For technical drawings and 3-D models, click on a part number.
Overall | Load Capacity, lbs. | Mounting Holes | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | Lg. | Wd. | Ht. | Center Ht. | Wd. | Dynamic | Static | Temperature Range, °F | For Shaft Material | No. of | Dia. | Each | |
Acetal Bearings with 6061 Aluminum Housing | |||||||||||||
1 1/4" | 3 3/8" | 4" | 2 31/64" | 1 1/2" | 9/16" | 1,200 | 1,500 | -4° to 176° | Stainless Steel, Steel | 4 | 7/32" | 0000000 | 0000000 |
Overall | Load Capacity, lbs. | Mounting Holes | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | Lg. | Wd. | Ht. | Center Ht. | Wd. | Dynamic | Static | Temperature Range, °F | For Shaft Material | No. of | Dia. | Each | |
Acetal Bearings with 6061 Aluminum Housing | |||||||||||||
1 1/4" | 7 1/2" | 4" | 2 15/32" | 1 1/2" | 9/16" | 1,900 | 3,000 | -4° to 176° | Stainless Steel, Steel | 4 | 7/32" | 0000000 | 0000000 |
Mounted Linear Sleeve Bearings for Support Rail Shafts

Virtually maintenance free, these bearings have slippery, chemical-resistant liners that don't require added lubrication. Mount them on a support rail shaft for applications requiring maximum rigidity.
Bearings with 0.0005" shaft clearance are best for precision applications. Bearings with 0.001" or 0.0015" shaft clearance are less likely to bind on your shaft than bearings with 0.0005" shaft clearance.
Self Aligning—Bearings compensate for shaft misalignment.
Fixed Alignment—Bearings are for use where shaft misalignment is unlikely.
Frelon liners are stronger and more wear resistant than PTFE liners.
For technical drawings and 3-D models, click on a part number.
Overall | Mounting Holes | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | Shaft Clearance | Lg. | Wd. | Ht. | Center Ht. | Wd. | Dynamic Load Capacity | Static Load Capacity, lbs. | Temperature Range, ° F | For Shaft Material | No. of | Dia. | Each | |
Self Aligning | ||||||||||||||
Frelon-Lined 6061 Aluminum Bearings with 6063 Aluminum Housing | ||||||||||||||
1" | 0.0005" | 2 5/8" | 3 1/4" | 1 15/16" | 1 3/16" | 9/16" | 500 lbs. @ 100 fpm | 7,000 | -400° to 400° | Steel | 4 | 7/32" | 00000000 | 0000000 |
1" | 0.0015" | 2 5/8" | 3 1/4" | 1 15/16" | 1 3/16" | 9/16" | 500 lbs. @ 100 fpm | 7,000 | -400° to 400° | Steel | 4 | 7/32" | 00000000 | 000000 |
1" | 0.0005" | 6" | 3 1/4" | 1 15/16" | 1 3/16" | 9/16" | 1,000 lbs. @ 100 fpm | 14,000 | -400° to 400° | Steel | 8 | 7/32" | 00000000 | 000000 |
1" | 0.0015" | 6" | 3 1/4" | 1 15/16" | 1 3/16" | 9/16" | 1,000 lbs. @ 100 fpm | 14,000 | -400° to 400° | Steel | 8 | 7/32" | 00000000 | 000000 |
Fixed Alignment | ||||||||||||||
PTFE-Lined 6061 Aluminum Bearings with 6061 Aluminum Housing | ||||||||||||||
1" | 0.001" | 2 13/16" | 3 1/4" | 2" | 1 3/16" | 9/16" | 500 lbs. @ 100 fpm | 11,000 | -400° to 375° | Aluminum, Stainless Steel, Steel | 4 | 7/32" | 0000000 | 00000 |
High-Speed Mounted Linear Sleeve Bearings for Support Rail Shafts

A ceramic liner makes high speeds as well as rapid acceleration and deceleration possible. Mount these bearings on a support rail shaft for applications requiring maximum rigidity. End seals keep contaminants out. These bearings are self-aligning to compensate for shaft misalignment. Note: Not for use with ceramic-coated aluminum or 300 series stainless steel shafts.
For technical drawings and 3-D models, click on a part number.
Overall | Mounting Holes | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Shaft Dia. | Lg. | Wd. | Ht. | Center Ht. | Wd. | Dynamic Load Cap. | Static Load Cap., lbs. | Shaft Clearance | Temp. Range, ° F | For Shaft Material | No. of | Dia. | Each | |
Self Aligning with 2° Misalignment Capability | ||||||||||||||
Ceramic-Lined 6061 Aluminum Bearings with 6061 Aluminum Housing | ||||||||||||||
1" | 2 13/16" | 3 1/4" | 2 3/16" | 1 3/16" | 9/16" | 1,000 lbs. @ 100 fpm | 11,000 | 0.0005" to 0.0006" | -200° to 400° | Aluminum, Steel | 4 | 3/16" | 0000000 | 0000000 |
Two-Piece Clamping Acme Lead Screw Collars

Mount these two-piece collars anywhere on an Acme lead screw without removing components. Use them to separate and position components or 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.
Thread Size | OD | Wd. | No. of Thread Starts | Hardness | Each | |
Right-Hand Threaded | ||||||
---|---|---|---|---|---|---|
Black-Oxide 1215 Carbon Steel | ||||||
1 1/2"-4 | 2 3/8" | 9/16" | 1 | Brinell 167 | 0000000 | 000000 |
Bearing Retaining Locknuts



With a nylon insert that grips your threaded shaft or spindle without damaging its threads, these locknuts—also called shaft nuts—hold bearings, bushings, gears, and pulleys prone to vibration tightly in place. They come as one piece, so you can easily clamp them onto your shaft or spindle. But, since they aren’t made entirely of metal, they don’t stand up to heat as well as all-metal locknuts. Slots in their sides mean you can tighten and loosen them with a spanner wrench or spanner socket. Their face is also chamfered to help keep the size and weight of your assembly at a minimum. All meet international standards for bearing locknut dimensions.
When choosing your thread spacing, consider the precision of your application. The finer the threads, the more control you have when making adjustments.
All carbon steel locknuts are strong and resist wear, though they don’t stand up to corrosion as well as stainless steel locknuts. 303 stainless steel locknuts resist corrosion better than steel locknuts but aren’t as strong. They withstand washdowns and chemicals.
For technical drawings and 3-D models, click on a part number.
Locknuts | |||||||||
---|---|---|---|---|---|---|---|---|---|
Thread | Spanner Sockets | ||||||||
Size | Spacing | OD | Wd. | Insert Max. Temp., °F | Specifications Met | Each | Each | ||
Carbon Steel | |||||||||
Chamfered Face | |||||||||
1.967"-18 | Extra Fine | 2 11/16" | 9/16" | 160° | ANSI/ABMA 8.2 | 0000000 | 000000 | 00000000 | 0000000 |
2.157"-18 | Extra Fine | 2 31/32" | 9/16" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 000000 |
303 Stainless Steel | |||||||||
Chamfered Face | |||||||||
1.967"-18 | Extra Fine | 2 11/16" | 9/16" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 000000 |
2.157"-18 | Extra Fine | 2 31/32" | 9/16" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 000000 |
Bearing Retaining Nuts

Often paired with spring lock washers to strengthen their hold, these retaining nuts—also known as shaft nuts—keep vibration from shifting bearings, bushings, pulleys, and gears on your threaded shaft or spindle. They have slotted sides, so you can tighten and loosen them with a spanner wrench or spanner socket.
Chamfered-face retaining nuts weigh less and produce less heat than stepped-face nuts.
Carbon steel retaining nuts are strong and resist wear.
303 stainless steel retaining nuts resist corrosion better than steel. They also withstand washdowns and chemicals.
For technical drawings and 3-D models, click on a part number.
Nuts | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Thread | Optional Washers | Spanner Sockets | |||||||||
Size | Spacing | OD | Wd. | Specifications Met | For Lock Washer Specifications Met | Each | Each | Each | |||
Carbon Steel | |||||||||||
Chamfered Face | |||||||||||
2.548"-18 | Extra Fine | 3 3/8" | 9/16" | ANSI/ABMA 8.2 | ANSI/ABMA 8.2 | 00000000 | 000000 | 000000000 | 00000 | 00000000 | 0000000 |
2.751"-18 | Extra Fine | 3 5/8" | 9/16" | ANSI/ABMA 8.2 | ANSI/ABMA 8.2 | 00000000 | 00000 | 000000000 | 0000 | 00000000 | 000000 |
303 Stainless Steel | |||||||||||
Chamfered Face | |||||||||||
2.548"-18 | Extra Fine | 3 3/8" | 9/16" | ANSI/ABMA 8.2 | ANSI/ABMA 8.2 | 0000000 | 000000 | 000000000 | 00000 | 00000000 | 000000 |
2.751"-18 | Extra Fine | 3 5/8" | 9/16" | ANSI/ABMA 8.2 | ANSI/ABMA 8.2 | 0000000 | 000000 | 000000000 | 00000 | 00000000 | 000000 |
Washdown Clamping Shaft Collars

Suitable for use in washdown applications, these plastic collars also offer good chemical resistance. They clamp evenly around the shaft to create a strong, mar-free hold. To use, slide onto your shaft and tighten the clamping screw to secure.
Acetal collars have a naturally slippery surface and resist swelling when exposed to moisture.
For technical drawings and 3-D models, click on a part number.