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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About Nuts, Materials, and Finishes
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High-Strength Steel Nylon-Insert Locknuts—Grade 8
A nylon insert grips the bolt to resist loosening without damaging threads. These nuts are reusable, but their holding power lessens with each use. Made from Grade 8 steel, they're about 25% stronger than medium-strength steel locknuts.
Steel locknuts without a finish are ready to be painted or finished.
Black-oxide steel locknuts have a dark surface color and are mildly corrosion resistant in dry environments.
Zinc yellow-chromate plated steel locknuts resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
Medium-Strength Steel Nylon-Insert Locknuts—Grade 5
Made from Grade 5 steel, these locknuts are suitable for fastening most machinery and equipment. A nylon insert grips the bolt to resist loosening without damaging threads. These locknuts are reusable, but their holding power lessens with each use.
Zinc-plated steel locknuts resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
Thread Size | Wd. | Ht. | Insert Max. Temp., °F | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel—Grade 5 | ||||||
---|---|---|---|---|---|---|
1"-14 | 1 7/16" | 1 3/64" | 220° | 5 | 000000000 | 000000 |
Low-Strength Steel Nylon-Insert Locknuts
These locknuts have a nylon insert that grips the bolt to resist loosening without damaging threads. They're reusable, but their holding power lessens with each use. About half the strength of medium-strength steel locknuts, they're for light duty fastening applications, such as securing access panels.
Zinc-plated steel locknuts are corrosion resistant in wet environments.
For technical drawings and 3-D models, click on a part number.
Thread Size | Wd. | Ht. | Insert Max. Temp., °F | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel | ||||||
---|---|---|---|---|---|---|
1"-14 | 1 7/16" | 1 3/64" | 220° | 5 | 000000000 | 000000 |
18-8 Stainless Steel Nylon-Insert Locknuts
These locknuts have good chemical resistance and may be mildly magnetic. The nylon insert grips the bolt to resist loosening without damaging threads. They're reusable, but their holding power lessens with each use.
For technical drawings and 3-D models, click on a part number.
Thread Size | Wd. | Ht. | Insert Max. Temp., °F | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | ||||||
---|---|---|---|---|---|---|
1"-14 | 1 7/16" | 1 3/64" | 220° | 1 | 000000000 | 00000 |
Super-Corrosion-Resistant 316 Stainless Steel Nylon-Insert Locknuts
These locknuts have excellent resistance to chemicals and salt water. The nylon insert grips the bolt to resist loosening without damaging threads. They're reusable, but their holding power lessens with each use. They may be mildy magnetic.
For technical drawings and 3-D models, click on a part number.
Thread Size | Wd. | Ht. | Insert Max. Temp., °F | Pkg. Qty. | Pkg. | |
316 Stainless Steel | ||||||
---|---|---|---|---|---|---|
1"-14 | 1 7/16" | 1 3/64" | 220° | 1 | 000000000 | 000000 |
Low-Strength Steel Thin Nylon-Insert Locknuts
These locknuts are about half the height of standard nylon-insert locknuts. Use them in light duty low-clearance applications or jam one against a hex nut to hold it in place. The nylon insert grips the bolt to resist loosening without damaging threads. They're reusable, but their holding power lessens with each use.
Zinc-plated steel locknuts resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
Thread Size | Wd. | Ht. | Insert Max. Temp., °F | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel | ||||||
---|---|---|---|---|---|---|
1"-14 | 1 7/16" | 35/64" | 220° | 1 | 000000000 | 00000 |
High-Strength Steel Thin Nylon-Insert Locknuts
Half the height of standard nylon-insert locknuts, use these in low-clearance applications or jam one against a hex nut to hold it in place. They have a nylon insert that grips the bolt to resist loosening without damaging threads. They're reusable, but their holding power lessens with each use. Made from Grade 8 steel, they're about 25% stronger than medium-strength steel thin locknuts.
Black-oxide steel locknuts nuts mildly resist corrosion in dry environments and have a dark surface color.
Zinc- and zinc yellow-chromate plated steel locknuts resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
Medium-Strength Steel Thin Nylon-Insert Locknuts
Half the height of standard nylon-insert locknuts, use these locknuts in low-clearance applications or jam one against a hex nut to hold it in place. The nylon insert grips the bolt to resist loosening without damaging threads. They're reusable, but their holding power lessens with each use. These nuts are suitable for fastening most machinery and equipment when used in conjunction with a standard hex nut. All have a finish that resists corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
Thread Size | Wd. | Ht. | Insert Max. Temp., °F | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel—Grade 5 | ||||||
---|---|---|---|---|---|---|
1"-14 | 1 7/16" | 35/64" | 220° | 1 | 000000000 | 00000 |
18-8 Stainless Steel Thin Nylon-Insert Locknuts
These locknuts have good chemical resistance and may be mildly magnetic. They're about half the height of standard nylon-insert locknuts. Use them in low-clearance applications or jam one against a hex nut to hold it in place. The nylon insert grips the bolt to resist loosening without damaging threads. They're reusable, but their holding power lessens with each use.
For technical drawings and 3-D models, click on a part number.
Thread Size | Wd. | Ht. | Insert Max. Temp., °F | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | ||||||
---|---|---|---|---|---|---|
1"-14 | 1 7/16" | 35/64" | 220° | 1 | 000000000 | 000000 |
High-Strength Steel Top-Lock Distorted-Thread Locknuts
An irregularly shaped thread at the top of the nut grips the bolt for a stronger hold than nylon-insert locknuts. They thread on from the bottom of the nut, allowing more threads to engage the bolt before tightening for easier installation than center-lock distorted thread locknuts. The strength of the bolt should match the strength of the nut to prevent damaging threads. They're not reusable. Comparable in strength to Grade 8 bolts, they're about 25% stronger than medium-strength steel locknuts.
Black-phosphate, zinc-plated, and zinc yellow-chromate-plated locknuts resist corrosion in wet environments.
Cadmium-plated locknuts resist corrosion in wet environments and have good lubricity, so they thread on smoothly.
For technical drawings and 3-D models, click on a part number.
Medium-Strength Steel Top-Lock Distorted-Thread Locknuts—Grade 5
These locknuts have an irregularly shaped thread at the top of the nut that grips the bolt for a stronger hold than nylon-insert locknuts. They thread on from the bottom of the nut, allowing more threads to engage the bolt before tightening for easier installation than center-lock distorted thread locknuts. The strength of the bolt should match the strength of the nut to prevent damaging threads. They're not reusable. Made from Grade 5 steel, they're suitable for fastening most machinery and equipment.
Black-oxide locknuts are mildly corrosion resistant in dry environments and blend in with dark surfaces.
Zinc-plated locknuts resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
High-Strength Steel Center-Lock Distorted-Thread Locknuts—Grade 8
These locknuts have an irregularly shaped thread in the middle of the nut that grips the bolt for a stronger hold than nylon-insert locknuts. Also known as reversible locknuts, they can be threaded on from either end. They're about three times stronger than low-strength steel locknuts. The strength of the bolt should match the strength of the nut to prevent damaging threads. They're not reusable.
Black-oxide steel locknuts have a dark surface color and are mildly corrosion resistant in dry environments.
Zinc yellow-chromate plated steel locknuts resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
Low-Strength Steel Center-Lock Distorted-Thread Locknuts
An irregularly shaped thread in the middle of the nut grips the bolt for a stronger hold than nylon-insert locknuts. Also known as reversible locknuts, they can be threaded on from either end. The strength of the bolt should match the strength of the nut to prevent damaging threads. They're not reusable. Use them in light duty fastening applications, such as securing access panels. A zinc plating provides corrosion resistance in wet environments.
For technical drawings and 3-D models, click on a part number.
Thread Size | Wd. | Ht. | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel—Grade 2 | |||||
---|---|---|---|---|---|
1"-14 | 1 1/2" | 55/64" | 5 | 000000000 | 000000 |
18-8 Stainless Steel Center-Lock Distorted-Thread Locknuts
These locknuts have good chemical resistance and may be mildly magnetic. They have an irregularly shaped thread in the middle of the nut that grips the bolt for a stronger hold than nylon-insert locknuts. Also known as reversible locknuts, they can be threaded on from either end. The strength of the bolt should match the strength of the nut to prevent damaging threads. They're not reusable.
For technical drawings and 3-D models, click on a part number.
Thread Size | Wd. | Ht. | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | |||||
---|---|---|---|---|---|
1"-14 | 1 1/2" | 55/64" | 1 | 000000000 | 00000 |
Steel Thin Flex-Top Locknuts for Heavy Vibration
About two-thirds the height of standard flex-top locknuts, use these in low-clearance applications or jam one against a hex nut to hold it in place. Threads at the top of the nut expand to grip the bolt on all sides for a stronger hold than distorted-thread locknuts. The strength of the bolt should match the strength of the nut to prevent damaging threads. These locknuts have equivalent strength to Grade 8 steel locknuts.
Plain steel locknuts are uncoated and ready for painting.
Cadmium-plated locknuts are corrosion resistant in wet environments. The plating adds lubricity so they thread on smoothly.
For technical drawings and 3-D models, click on a part number.
Medium-Strength Steel Locknuts for use with Cotter Pins—Grade 5
Secure these hex slotted nuts by inserting a cotter pin or safety wire through the slots and a drilled hole in your bolt for mild loosening resistance. They’re not recommended for use on parts exposed to high vibration because the pin is prone to shearing under prolonged stress. Height includes the slots. Cotter pins are not included. They're zinc plated to resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
Thread Size | Wd. | Ht. | For Cotter Pin Dia. | Min. Slot Wd. | Min. Slot Dp. | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel—Grade 5 | ||||||||
---|---|---|---|---|---|---|---|---|
1"-14 | 1 1/2" | 55/64" | 3/16" | 0.24" | 0.241" | 1 | 000000000 | 00000 |
Low-Strength Steel Locknuts for use with Cotter Pins
Secure these hex slotted nuts by inserting a cotter pin or safety wire through the slots and a drilled hole in your bolt for mild loosening resistance. They’re not recommended for use on parts exposed to high vibration because the pin is prone to shearing under prolonged stress. Height includes the slots. Cotter pins are not included.
Zinc-plated steel locknuts resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
High-Strength Steel Distorted-Thread Flange Locknuts
An irregularly-shaped thread grips the bolt for a stronger hold than nylon-insert flange locknuts. They have a flange that distributes pressure where the nut meets the material surface, eliminating the need for a separate washer. Grade G locknuts are comparable in strength to Grade 8 bolts. Height includes the flange.
For technical drawings and 3-D models, click on a part number.
Flange | |||||||
---|---|---|---|---|---|---|---|
Thread Size | Wd. | Ht. | Dia. | Thick. | Pkg. Qty. | Pkg. | |
Black-Phosphate Steel—Grade G | |||||||
1"-14 | 1 1/2" | 57/64" | 2 1/16" | 0.13" | 5 | 000000000 | 000000 |
Medium-Strength Steel Distorted-Thread Flange Locknuts—Grade 5
For a stronger hold than nylon-insert flange locknuts, these locknuts grip the bolt with an irregularly shaped thread. The flange distributes pressure where the nut meets the material surface, so you don’t need a separate washer. Made from Grade 5 steel, these locknuts are a good choice for fastening most machinery and equipment.
Zinc-plated steel locknuts resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
Flange | |||||||
---|---|---|---|---|---|---|---|
Thread Size | Wd. | Ht. | Dia. | Thick. | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel—Grade 5 | |||||||
1"-14 | 1 1/2" | 29/32" | 2 1/16" | 0.13" | 1 | 000000000 | 00000 |
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 | |||||||||
0.391"-32 | Extra Fine | 3/4" | 9/32" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 0000000 |
0.469"-32 | Extra Fine | 7/8" | 3/8" | 160° | ANSI/ABMA 8.2 | 0000000 | 0000 | 00000000 | 000000 |
0.586"-32 | Extra Fine | 1" | 3/8" | 160° | ANSI/ABMA 8.2 | 0000000 | 0000 | 00000000 | 000000 |
0.664"-32 | Extra Fine | 1 1/8" | 13/32" | 160° | ANSI/ABMA 8.2 | 0000000 | 0000 | 00000000 | 000000 |
0.781"-32 | Extra Fine | 1 3/8" | 13/32" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 000000 |
0.969"-32 | Extra Fine | 1 9/16" | 15/32" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 000000 |
1.173"-18 | Extra Fine | 1 3/4" | 15/32" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 000000 |
1.312"-18 | Extra Fine | 2 1/16" | 1/2" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 000000 |
1.376"-18 | Extra Fine | 2 1/16" | 1/2" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 000000 |
1.563"-18 | Extra Fine | 2 1/4" | 1/2" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 000000 |
1.767"-18 | Extra Fine | 2 17/32" | 1/2" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 000000 |
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 |
2.360"-18 | Extra Fine | 3 5/32" | 19/32" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 000000 |
2.548"-18 | Extra Fine | 3 3/8" | 5/8" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 000000 |
2.751"-18 | Extra Fine | 3 5/8" | 5/8" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 000000 |
2.933"-12 | Extra Fine | 3 7/8" | 21/32" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 000000 |
3.137"-12 | Extra Fine | 4 5/32" | 5/8" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 000000 | 00 |
3.340"-12 | Extra Fine | 4 13/32" | 23/32" | 160° | ANSI/ABMA 8.2 | 00000000 | 00000 | 000000 | 00 |
3.527"-12 | Extra Fine | 4 21/32" | 25/32" | 160° | ANSI/ABMA 8.2 | 00000000 | 00000 | 000000 | 00 |
3.730"-12 | Extra Fine | 4 15/16" | 13/16" | 160° | ANSI/ABMA 8.2 | 00000000 | 00000 | 00000000 | 00000000 |
3.918"-12 | Extra Fine | 5 3/16" | 13/16" | 160° | ANSI/ABMA 8.2 | 0000000 | 000000 | 00000000 | 00000000 |
4.325"-12 | Extra Fine | 5 23/32" | 15/16" | 160° | ANSI/ABMA 8.2 | 00000000 | 000000 | 000000 | 00 |
4.716"-12 | Extra Fine | 6 1/8" | 15/16" | 160° | ANSI/ABMA 8.2 | 0000000 | 000000 | 000000 | 00 |
303 Stainless Steel | |||||||||
Chamfered Face | |||||||||
0.391"-32 | Extra Fine | 3/4" | 9/32" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 000000 |
0.469"-32 | Extra Fine | 7/8" | 3/8" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 000000 |
0.586"-32 | Extra Fine | 1" | 3/8" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 000000 |
0.664"-32 | Extra Fine | 1 1/8" | 13/32" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 000000 |
0.781"-32 | Extra Fine | 1 3/8" | 13/32" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 000000 |
0.969"-32 | Extra Fine | 1 9/16" | 15/32" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 000000 |
1.173"-18 | Extra Fine | 1 3/4" | 15/32" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 000000 |
1.312"-18 | Extra Fine | 2 1/16" | 1/2" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 000000 |
1.376"-18 | Extra Fine | 2 1/16" | 1/2" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 000000 |
1.563"-18 | Extra Fine | 2 1/4" | 1/2" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 000000 |
1.767"-18 | Extra Fine | 2 17/32" | 1/2" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 000000 |
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 |
2.360"-18 | Extra Fine | 3 5/32" | 19/32" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 000000 |
2.548"-18 | Extra Fine | 3 3/8" | 5/8" | 160° | ANSI/ABMA 8.2 | 0000000 | 00000 | 00000000 | 000000 |
2.751"-18 | Extra Fine | 3 5/8" | 5/8" | 160° | ANSI/ABMA 8.2 | 0000000 | 000000 | 00000000 | 000000 |
2.933"-12 | Extra Fine | 3 7/8" | 21/32" | 160° | ANSI/ABMA 8.2 | 0000000 | 000000 | 00000000 | 000000 |
3.137"-12 | Extra Fine | 4 5/32" | 5/8" | 160° | ANSI/ABMA 8.2 | 0000000 | 000000 | 000000 | 00 |
3.918"-12 | Extra Fine | 5 3/16" | 13/16" | 160° | ANSI/ABMA 8.2 | 0000000 | 000000 | 00000000 | 00000000 |