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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.
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Selecting Compatible Lead Screws and Nuts
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About Washers
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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. Zinc-plated steel locknuts resist rusting from some moisture, but you shouldn’t use them with salt water or chemicals.
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 | Pitch, mm | Spacing | OD | Wd., mm | Insert Max. Temp., °F | Specifications Met | Each | Each | ||
Carbon Steel | ||||||||||
Chamfered Face | ||||||||||
| M25 | 1.5 | Extra Fine | 38mm | 11 | 160° | ISO 2982-2 | 0000000 | 000000 | 00000000 | 0000000 |
Zinc-Plated Carbon Steel | ||||||||||
Chamfered Face | ||||||||||
| M25 | 1.5 | Extra Fine | 38mm | 10.5 | 210° | __ | 0000000 | 00000 | 000000 | 00 |
303 Stainless Steel | ||||||||||
Chamfered Face | ||||||||||
| M25 | 1.5 | Extra Fine | 38mm | 11 | 160° | ISO 2982-2 | 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. Made of carbon steel, they’re strong and wear resistant.
Chamfered-face retaining nuts weigh less and produce less heat than stepped-face nuts. They meet ISO 2982 (formerly DIN 981), an international standard for bearing locknut dimensions. Their sizes correspond to SKF KM series. Use them with DIN 5406 spring lock washers.
For technical drawings and 3-D models, click on a part number.
High-Temperature Plastic Submersible Cord Grips
Made of PVDF, these grips are able to withstand temperatures up to 300° F and are corrosion- and chemical-resistant. Grips are rated NEMA 12 for protection from splashing oil and coolant as well as IP68 and NEMA 6 for protection from continuous submersion. They’re also rated IP69K and NEMA 4X, which means in addition to being submersible, they withstand high-pressure, high-temperature washdowns and can be dunked in corrosive liquids without any affect. A rubber bushing and O-ring create a tight seal to prevent liquid from entering the connection.
For technical drawings and 3-D models, click on a part number.
| For Cord OD | For Knockout Trade Size | Temp. Range, °F | Features | Environmental Rating | Specifications Met | Each | |
Metric Threads | |||||||
|---|---|---|---|---|---|---|---|
| 0.35"-0.63" | M25 | -30° to 300° | Nickel-Plated Brass Locknut, Rubber O-Ring | IP68, IP69K, NEMA 4X, NEMA 6, NEMA 12 | UL Listed, CSA Certified, UL 94 V-0 | 0000000 | 000000 |
| 0.51"-0.71" | M25 | -30° to 300° | Nickel-Plated Brass Locknut, Rubber O-Ring | IP68, IP69K, NEMA 4X, NEMA 6, NEMA 12 | UL Listed, CSA Certified, UL 94 V-0 | 0000000 | 00000 |
Plastic Submersible Cord Grips
Able to resist most chemicals and withstand use underwater, these nylon grips are rated IP68 for protection from dusty environments and prolonged submersion. A rubber bushing and O-ring create a tight seal to prevent liquid from entering the connection. All are CE marked and TUV Rheinland certified, which means they meet European safety standards. Grips with UL certifications meet American safety standards, while those with C-UL and CSA certifications meet Canadian safety standards. Some also meet standards for marine vessels classed by DNV-GL.
Grips with metric threads meet IP69 for protection from high-pressure washdowns.
For technical drawings and 3-D models, click on a part number.
Each | ||||||||
|---|---|---|---|---|---|---|---|---|
| For Cord OD | For Knockout Trade Size | Temp. Range, °F | Features | Environmental Rating | Specifications Met | 1-9 | 10-Up | |
Metric Threads | ||||||||
| 0.19"-0.51" | M25 | 0° to 175° | Nylon Plastic Locknut, Rubber O-Ring | NEMA 6, NEMA 12, IP66, IP68, IP69 | UL Listed, C-UL Listed, CE Marked, DNV-GL Type Approved, TUV Rheinland Certified, VDE Certified | 0000000 | 00000 | 00000 |
| 0.35"-0.67" | M25 | 0° to 175° | Nylon Plastic Locknut, Rubber O-Ring | NEMA 12, IP66, IP68, IP69 | UL Listed, C-UL Listed, CSA Certified, CE Marked, DNV-GL Type Approved, TUV Rheinland Certified, VDE Certified | 0000000 | 0000 | 0000 |
Continuous-Flex Plastic Submersible Cord Grips
These grips have an extension that provides extra support for moving cables and prevents kinking for longer cable life. Grips are rated IP68 and 69K for protection from continuous submersion and high-pressure, high-temperature jets of water. They are also rated NEMA 4X, 6, and 12 for indoor and outdoor protection against corrosion, water projected from a hose, and dripping oils and lubricants. A rubber bushing and O-ring create a tight seal to prevent liquid from entering the connection.
For technical drawings and 3-D models, click on a part number.
| For Cord OD | For Knockout Trade Size | Thread Size | Material | Temp. Range, °F | Features | Environmental Rating | Specifications Met | Each | |
Metric Threads | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 0.35"-0.63" | M25 | M25 | Black Nylon Plastic | -20° to 210° | Nylon Plastic Locknut, Rubber O-Ring | NEMA 4X, NEMA 6, NEMA 12, IP68, IP69K | UL Listed, UL 94 V-0, UL 746C f1, CSA Certified | 00000000 | 000000 |
| 0.51"-0.71" | M25 | M25 | Black Nylon Plastic | -20° to 210° | Nylon Plastic Locknut, Rubber O-Ring | NEMA 4X, NEMA 6, NEMA 12, IP68, IP69K | UL Listed, UL 94 V-0, UL 746C f1, CSA Certified | 00000000 | 00000 |
90° Elbow Continuous-Flex Plastic Submersible Cord Grips
These grips have an extension that provides extra support for moving cables and prevents kinking for longer cable life. Grips are rated IP68 and 69K for protection from continuous submersion and high-pressure, high-temperature jets of water. They are also rated NEMA 4X, 6, and 12 for indoor and outdoor protection against corrosion, water projected from a hose, and dripping oils and lubricants. A rubber bushing and O-ring create a tight seal to prevent liquid from entering the connection.
For technical drawings and 3-D models, click on a part number.
| For Cord OD | For Knockout Trade Size | Thread Size | Material | Temp. Range, °F | Features | Environmental Rating | Specifications Met | Each | |
Metric Threads | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 0.35"-0.63" | M25 | M25 | Black Nylon Plastic | -20° to 210° | Nylon Plastic Locknut, Rubber O-Ring | IP68, IP69K, NEMA 12, NEMA 4X, NEMA 6 | CSA Certified, UL 746C f1, UL 94 V-0, UL Listed | 0000000 | 000000 |
| 0.51"-0.71" | M25 | M25 | Black Nylon Plastic | -20° to 210° | Nylon Plastic Locknut, Rubber O-Ring | IP68, IP69K, NEMA 12, NEMA 4X, NEMA 6 | CSA Certified, UL 746C f1, UL 94 V-0, UL Listed | 0000000 | 00000 |
Plastic Submersible Cord Grips for Building Cable
A rubber bushing with an oval slot resists water and provides entry for building cable, which is also known as Romex type NM-B or type UF-B cable. They are rated IP68 and IP69K for protection from prolonged submersion and high-pressure, high-temperature jets of water. Made of nylon, these cord grips keep electrical assemblies lightweight. They also withstand chemicals and corrosive environments.
For technical drawings and 3-D models, click on a part number.
For Cord | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Wd. | Thick. | For Knockout Trade Size | Material | Temp. Range, °F | Features | Environmental Rating | Specifications Met | Each | |
Metric Threads | |||||||||
| 0.55" | 0.24" | M25 | Black Nylon Plastic | -40° to 210° F | Rubber O-Ring, Nylon Plastic Locknut | IP68, IP69K, NEMA 4X, NEMA 6, NEMA 12 | UL 746C f1, UL 94 V-0 | 0000000 | 00000 |
| 0.55" | 0.28" | M25 | Black Nylon Plastic | -40° to 210° F | Rubber O-Ring, Nylon Plastic Locknut | IP68, IP69K, NEMA 4X, NEMA 6, NEMA 12 | UL 746C f1, UL 94 V-0 | 0000000 | 0000 |
Wraparound Plastic Submersible Cord Grips
Wrap the split gland of these grips around ethernet cables with an RJ45 connector or other already installed cables for a water-resistant seal with your enclosure. They’re rated IP68 and NEMA 6P, so they withstand use under water and protect electronics inside enclosures from moisture and harsh chemicals. All are made of nylon, making them corrosion and wear resistant. They relieve the strain on a cable when its pulled, extending the life of the cable.
When choosing a size, keep in mind that the sealing nut ID and body ID must be large enough for the end of your cord to fit through with the connector.
For technical drawings and 3-D models, click on a part number.
| For Cord OD | For Knockout Trade Size | Sealing Nut ID | Body ID | Temperature Range, °F | Features | Environmental Rating | Specifications Met | Each | |
Metric Threads | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 0.21"-0.33" | M25 | 0.72" | 0.71" | 0° to 210° | Nylon Plastic Locknut, Split Gland | IP68, NEMA 6P | UL Recognized Component, C-UL Recognized Component, UL 94 V-2 | 00000000 | 00000 |
Flared Plastic Submersible Cord Grips
Secure cords installed through enclosures and panels in wet environments while protecting them against sharp bends. With a flared end that keeps cords from bending without limiting too much motion, these grips extend cord life. They’re good for cords used on handheld equipment. Made of polyamide, they stand up to corrosion and wear.
For technical drawings and 3-D models, click on a part number.
| For Cord OD | For Knockout Trade Size | Flare Diameter | Material | Temperature Range, °F | Features | Environmental Rating | Specifications Met | Each | |
Metric Threads | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 0.35"-0.55" | M25 | 1 3/8" | Gray Polyamide Plastic | 0° to 175° | Nylon Plastic Locknut, Rubber O-Ring | NEMA 12, IP68 | UL Listed, C-UL Listed, CE Marked | 0000000 | 00000 |
90° Elbow Plastic Submersible Cord Grips
Able to resist most chemicals and withstand use underwater, these nylon grips are rated IP68 and 69K for protection from continuous submersion and high-pressure, high-temperature jets of water. They are also rated NEMA 4X, 6, and 12 for indoor and outdoor protection against corrosion, water projected from a hose, and dripping oils and lubricants. A rubber bushing and O-ring create a tight seal to prevent liquid from entering the connection. All meet UL 746C f1, so they’re UV resistant and can be used in direct sunlight, as well as UL 94 V-0, which means they’ll self-extinguish within 10 seconds of catching fire and won’t spread flames by dripping. UL listed and CSA certified, they meet U.S. and Canadian safety standards.
Metric Threads are also VDE certified, meaning they meet European safety standards.
For technical drawings and 3-D models, click on a part number.
| For Cord OD | For Knockout Trade Size | Material | Temp. Range, °F | Features | Environmental Rating | Specifications Met | Each | |
Metric Threads | ||||||||
|---|---|---|---|---|---|---|---|---|
| 0.35"-0.63" | M25 | Black Nylon Plastic | -20° to 210° | Nylon Plastic Locknut, Rubber O-Ring | IP68, IP69K, NEMA 4X, NEMA 6, NEMA 12 | UL Listed, UL 94 V-0, UL 746C f1, CSA Certified, VDE Certified | 0000000 | 000000 |
| 0.51"-0.71" | M25 | Black Nylon Plastic | -20° to 210° | Nylon Plastic Locknut, Rubber O-Ring | IP68, IP69K, NEMA 4X, NEMA 6, NEMA 12 | UL Listed, UL 94 V-0, UL 746C f1, CSA Certified, VDE Certified | 0000000 | 00000 |
Screw-Down Sure-Grip Plastic Submersible Cord Grips
Tighten the screw-down clamp on these grips for superior pull-out resistance while relieving tension at connection points. Grips are rated IP68 for protection from prolonged submersion and IP69K for protection against high-pressure, high-temperature jets of water. A rubber bushing and O-ring create a tight seal to prevent liquid from entering the connection.
For technical drawings and 3-D models, click on a part number.
| For Cord OD | For Knockout Trade Size | Material | Temp. Range, °F | Features | Environmental Rating | Specifications Met | Each | |
Metric Threads | ||||||||
|---|---|---|---|---|---|---|---|---|
| 0.51"-0.71" | M25 | Black Nylon Plastic | 0° to 155° | Rubber O-Ring, Nylon Plastic Locknut | IP68, IP69K, NEMA 4X, NEMA 6 | UL 94 V-0, CE Marked, DNV-GL Type Approved | 0000000 | 000000 |
Brass Submersible Cord Grips
Suitable for use in applications where cords are underwater—these grips are rated IP68 for protection from prolonged submersion. They are nickel plated for good corrosion resistance. A rubber bushing and O-ring create a tight seal to prevent liquid from entering your connection.
For technical drawings and 3-D models, click on a part number.
| For Cord OD | For Knockout Trade Size | Thread Size | Temp. Range, °F | Features | Environmental Rating | Specifications Met | Each | |
Metric Threads | ||||||||
|---|---|---|---|---|---|---|---|---|
| 0.35"-0.67" | M25 | M25 | 0° to 210° | Nickel-Plated Brass Locknut, Rubber O-Ring | IP68, NEMA 4X, NEMA 6, NEMA 12 | CE Marked, DNV-GL Type Approved, VDE Certified | 0000000 | 000000 |
Low-Temperature Brass Submersible Cord Grips
Keep cords from coming loose and seal water out of enclosures in extremely cold labs and storage areas. Thanks to their plastic bushing and rubber O-ring, these grips withstand temperatures as low as -75° F. They’re NEMA and IP rated, so you can safely submerse them under water, though only for short periods of time. They also stand up to dust, weather, washdowns, and oil. Nickel plated, they resist corrosion. All of these grips relieve strain on your cord if it’s pulled, prolonging its life.
For technical drawings and 3-D models, click on a part number.
| For Cord OD | For Knockout Trade Size | Temperature Range, °F | Features | Environmental Rating | Specifications Met | Each | |
Metric Threads | |||||||
|---|---|---|---|---|---|---|---|
| 0.24"-0.51" | M25 | -75° to 210° | Nickel-Plated Brass Locknut, Rubber O-Ring | NEMA 4X, NEMA 6, NEMA 12, IP68 | CE Marked, UL Recognized Component, VDE Certified | 0000000 | 000000 |
| 0.36"-0.67" | M25 | -75° to 210° | Nickel-Plated Brass Locknut, Rubber O-Ring | NEMA 4X, NEMA 6, NEMA 12, IP68 | CE Marked, UL Recognized Component, VDE Certified | 0000000 | 00000 |
Stainless Steel Submersible Cord Grips
These stainless steel grips offer the most corrosion resistance of any of our submersible metal cord grips. Grips are rated IP68 for protection from prolonged submersion and IP69K for protection from high-pressure, high-temperature jets of water. A rubber bushing and O-ring create a tight seal to prevent liquid from entering your connection.
For technical drawings and 3-D models, click on a part number.
| For Cord OD | For Knockout Trade Size | Temp. Range, °F | Features | Environmental Rating | Specifications Met | Each | |
Metric Threads | |||||||
|---|---|---|---|---|---|---|---|
| 0.35"-0.63" | M25 | -20° to 210° | Rubber O-Ring, Nickel-Plated Brass Locknut | IP68, IP69K, NEMA 4X, NEMA 6, NEMA 12 | CE Marked, CSA Certified, UL Listed | 0000000 | 000000 |
| 0.51"-0.71" | M25 | -20° to 210° | Rubber O-Ring, Nickel-Plated Brass Locknut | IP68, IP69K, NEMA 4X, NEMA 6, NEMA 12 | CE Marked, CSA Certified, UL Listed | 0000000 | 00000 |
Aluminum Cord Grips
These cord grips are lightweight yet durable. As you tighten the grip, a nylon inner ring and lubricated rubber bushing secure your cable, prevent overtightening, and create a seal around the cord to block out liquid. The inner rings are colored by size so you can identify them at a glance.
Locknut and O-ring kits (sold separately) create liquid-tight seals between cord grips and enclosure knockouts. Rated NEMA 4X, NEMA 13, and IP66, the resulting seals provide indoor and outdoor protection against dust, corrosion, water projected from a hose, and oil/coolant spray. Each kit includes two locknuts and one or two O-rings.
For technical drawings and 3-D models, click on a part number.
Cord Grips | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Knockout Connection | Each | Locknut and O-Ring Kits | |||||||||
| For Cord OD | For Knockout Trade Size | Type | Gender | Temperature Range, °F | Environmental Rating | Specifications Met | 1-9 | 10-Up | Each | ||
Metric Threads | |||||||||||
| 0.38"-0.5" | M25 | Threaded | Male | -30° to 225° | NEC Class III Divisions 1, 2 | UL Listed | 00000000 | 000000 | 000000 | 00000000 | 000000 |
| 0.5"-0.62" | M25 | Threaded | Male | -30° to 225° | NEC Class III Divisions 1, 2 | UL Listed | 00000000 | 00000 | 00000 | 00000000 | 00000 |
Low-Profile Submersible Break-Through Multi-Cord Grips
The face of these grips is flush with the cable-entry point for a seamless appearance. They have a thin, flexible seal that covers the holes until you push a cord through. Grips are rated IP66, IP68, NEMA 4X, and NEMA 12 for protection from continuous submersion, washdowns and oil/coolant splashing.
For technical drawings and 3-D models, click on a part number.
| Shape | For Cord OD (No. of Cords) | For Knockout Trade Size | Thread Type | For Max. Panel Thick. | Material | Temp. Range, °F | Features | Environmental Rating | Specifications Met | Each | |
For 3 Cords | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Straight | 0.13"-0.2" (2), 0.13"-0.25" (1) | M25 | Metric | 0.32" | Gray Nylon Plastic | -40° to 190° | Nylon Plastic Locknut | NEMA 4X, NEMA 12, IP66, IP68 | UL Recognized Component, UL 94 V-0, C-UL Recognized Component, DNV-GL Type Approved | 0000000 | 000000 |
For 4 Cords | |||||||||||
| Straight | 0.13"-0.2" | M25 | Metric | 0.32" | Gray Nylon Plastic | -40° to 190° | Nylon Plastic Locknut | NEMA 4X, NEMA 12, IP66, IP68 | UL Recognized Component, UL 94 V-0, C-UL Recognized Component, DNV-GL Type Approved | 0000000 | 00000 |
Wraparound Multi-Cord Grips
Attach a cord grip to cable without removing connectors and rewiring. These cord grips have a two-piece design to fit around cables with connectors. Choose a housing and then select inserts (sold separately). Inserts have a slit, eliminating the need to thread cable through them.
For technical drawings and 3-D models, click on a part number.
For Insert | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For No. of Inserts | For Knockout Trade Size | Ht. | Wd. | Size | Thread Type | For Max. Panel Thick. | Temp. Range, °F | Features | Environmental Rating | Specifications Met | Each | |
Gray Polycarbonate Plastic | ||||||||||||
| 1 | M25 | 0.83" | 0.83" | Small | Metric | 0.31" | -20° to 190° | Nylon Plastic Locknut, Rubber Gasket | NEMA 12, IP54 | UL Recognized Component, UL 94 V-0, C-UL Recognized Component, DNV-GL Type Approved | 00000000 | 000000 |
Metric 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, these 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 and travel distance per turn. 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., mm | Dia., mm | Wd., mm, mm | Ht., mm | Thick., mm | No. of Thread Starts | Travel Distance per Turn, mm | Hardness | Dynamic Thrust Load Cap., lbs. | Max. Backlash, mm | Temperature Range, °F | Each | |
Alloy Steel | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| M25 | 40 | 43 | 67 | 50 | 10 | 1 | 5 | Rockwell C58 | 1,500 | 0.1 | 5° to 175° | 0000000 | 0000000 |
| M25 | 98 | 60 | 96 | 72 | 15 | 1 | 10 | Rockwell C58 | 7,000 | 0.1 | 5° to 175° | 0000000 | 000000 |