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Thread Spacing Thread Spacing |
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Thread Direction Thread Direction |
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Drive Style Drive Style |
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Specifications Met Specifications Met |
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About Nuts, Materials, and Finishes
More
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.
Zinc yellow-chromate 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 Yellow-Chromate Plated Steel—Grade 8 | ||||||
|---|---|---|---|---|---|---|
| 1/4"-20 | 7/16" | 5/16" | 220° | 25 | 000000000 | 00000 |
| 1/4"-28 | 7/16" | 5/16" | 220° | 25 | 000000000 | 0000 |
| 5/16"-18 | 1/2" | 11/32" | 220° | 20 | 000000000 | 0000 |
| 5/16"-24 | 1/2" | 11/32" | 220° | 20 | 000000000 | 0000 |
| 3/8"-16 | 9/16" | 29/64" | 220° | 20 | 000000000 | 0000 |
| 3/8"-24 | 9/16" | 29/64" | 220° | 20 | 000000000 | 0000 |
| 7/16"-14 | 5/8" | 29/64" | 220° | 10 | 000000000 | 0000 |
| 7/16"-20 | 5/8" | 29/64" | 220° | 10 | 000000000 | 0000 |
| 1/2"-13 | 3/4" | 19/32" | 220° | 10 | 000000000 | 0000 |
| 1/2"-20 | 3/4" | 19/32" | 220° | 10 | 000000000 | 0000 |
| 9/16"-12 | 7/8" | 41/64" | 220° | 5 | 000000000 | 0000 |
| 9/16"-18 | 7/8" | 41/64" | 220° | 5 | 000000000 | 0000 |
| 5/8"-11 | 15/16" | 3/4" | 220° | 5 | 000000000 | 0000 |
| 5/8"-18 | 15/16" | 3/4" | 220° | 5 | 000000000 | 0000 |
| 3/4"-10 | 1 1/16" | 7/8" | 220° | 5 | 000000000 | 0000 |
| 3/4"-16 | 1 1/16" | 7/8" | 220° | 5 | 000000000 | 0000 |
| 7/8"-9 | 1 1/4" | 63/64" | 220° | 1 | 000000000 | 0000 |
| 7/8"-14 | 1 1/4" | 63/64" | 220° | 1 | 000000000 | 0000 |
| 1"-8 | 1 7/16" | 1 3/64" | 220° | 1 | 000000000 | 0000 |
| 1"-8 | 1 5/8" | 1 9/32" | 220° | 1 | 000000000 | 0000 |
| 1"-12 | 1 7/16" | 1 3/64" | 220° | 5 | 000000000 | 00000 |
| 1"-14 | 1 7/16" | 1 3/64" | 220° | 1 | 000000000 | 0000 |
| 1 1/8"-7 | 1 5/8" | 1 11/64" | 220° | 1 | 000000000 | 0000 |
| 1 1/8"-12 | 1 5/8" | 1 11/64" | 220° | 1 | 000000000 | 0000 |
| 1 1/4"-7 | 1 13/16" | 1 25/64" | 220° | 1 | 000000000 | 0000 |
| 1 1/4"-7 | 2 1/64" | 1 41/64" | 220° | 1 | 000000000 | 00000 |
| 1 1/4"-8 | 2 1/64" | 1 41/64" | 220° | 1 | 000000000 | 00000 |
| 1 1/4"-12 | 1 13/16" | 1 25/64" | 220° | 1 | 000000000 | 00000 |
| 1 3/8"-8 | 2 13/16" | 1 51/64" | 220° | 1 | 000000000 | 00000 |
| 1 1/2"-6 | 2 13/64" | 1 39/64" | 220° | 1 | 000000000 | 00000 |
| 1 1/2"-6 | 2 25/64" | 1 59/64" | 220° | 1 | 000000000 | 00000 |
| 1 1/2"-8 | 2 25/64" | 1 59/64" | 220° | 1 | 000000000 | 00000 |
| 1 1/2"-12 | 2 13/64" | 1 39/64" | 220° | 1 | 000000000 | 00000 |
| 1 3/4"-5 | 2 49/64" | 2 5/16" | 220° | 1 | 000000000 | 00000 |
| 1 3/4"-8 | 2 49/64" | 2 5/16" | 220° | 1 | 000000000 | 00000 |
| 1 3/4"-12 | 2 49/64" | 2 5/16" | 220° | 1 | 000000000 | 00000 |
| 2"-4 1/2 | 3 9/64" | 2 13/32" | 220° | 1 | 000000000 | 00000 |
| 2"-8 | 3 9/64" | 2 13/32" | 220° | 1 | 000000000 | 00000 |
| 2"-12 | 3 9/64" | 2 13/32" | 220° | 1 | 000000000 | 00000 |
| 2 1/4"-8 | 3 33/64" | 2 13/16" | 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. 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 Yellow-Chromate Plated Steel—Grade 8 | ||||||
|---|---|---|---|---|---|---|
| 1/4"-20 | 7/16" | 13/64" | Not Rated | 100 | 000000000 | 00000 |
| 5/16"-18 | 1/2" | 1/4" | Not Rated | 100 | 000000000 | 00000 |
| 3/8"-16 | 9/16" | 17/64" | Not Rated | 100 | 000000000 | 00000 |
| 3/8"-24 | 9/16" | 17/64" | Not Rated | 50 | 000000000 | 00000 |
| 7/16"-14 | 5/8" | 5/16" | Not Rated | 25 | 000000000 | 0000 |
| 7/16"-20 | 5/8" | 5/16" | Not Rated | 25 | 000000000 | 0000 |
| 1/2"-13 | 3/4" | 5/16" | Not Rated | 25 | 000000000 | 0000 |
| 5/8"-11 | 15/16" | 25/64" | Not Rated | 10 | 000000000 | 0000 |
| 1 1/4"-12 | 1 13/16" | 3/4" | Not Rated | 1 | 000000000 | 0000 |
| 1 1/2"-12 | 2 3/16" | 51/64" | Not Rated | 1 | 000000000 | 00000 |
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.
Zinc-plated and zinc yellow-chromate plated locknuts resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Pkg. Qty. | Pkg. | |
Zinc Yellow-Chromate Plated Steel—Grade C | |||||
|---|---|---|---|---|---|
| 1/4"-20 | 7/16" | 7/32" | 50 | 000000000 | 00000 |
| 1/4"-28 | 7/16" | 7/32" | 50 | 000000000 | 0000 |
| 5/16"-18 | 1/2" | 17/64" | 50 | 000000000 | 0000 |
| 5/16"-24 | 1/2" | 17/64" | 50 | 000000000 | 0000 |
| 3/8"-16 | 9/16" | 21/64" | 25 | 000000000 | 0000 |
| 3/8"-24 | 9/16" | 21/64" | 25 | 000000000 | 0000 |
| 7/16"-14 | 11/16" | 3/8" | 25 | 000000000 | 0000 |
| 7/16"-20 | 11/16" | 3/8" | 25 | 000000000 | 0000 |
| 1/2"-13 | 3/4" | 7/16" | 10 | 000000000 | 0000 |
| 1/2"-20 | 3/4" | 7/16" | 10 | 000000000 | 0000 |
| 9/16"-12 | 7/8" | 31/64" | 10 | 000000000 | 0000 |
| 9/16"-18 | 7/8" | 31/64" | 10 | 000000000 | 0000 |
| 5/8"-11 | 15/16" | 35/64" | 5 | 000000000 | 0000 |
| 5/8"-18 | 15/16" | 35/64" | 5 | 000000000 | 0000 |
| 3/4"-10 | 1 1/8" | 41/64" | 5 | 000000000 | 0000 |
| 3/4"-16 | 1 1/8" | 41/64" | 5 | 000000000 | 0000 |
| 7/8"-9 | 1 5/16" | 3/4" | 1 | 000000000 | 0000 |
| 7/8"-14 | 1 5/16" | 3/4" | 1 | 000000000 | 0000 |
| 1"-8 | 1 1/2" | 55/64" | 1 | 000000000 | 0000 |
| 1"-14 | 1 1/2" | 55/64" | 1 | 000000000 | 0000 |
Thread | ||||||
|---|---|---|---|---|---|---|
| Size | Pitch, mm | Wd., mm | Ht., mm | Pkg. Qty. | Pkg. | |
Zinc Yellow-Chromate Plated Steel—Class 10 | ||||||
| M6 | 1 | 10 | 6 | 100 | 000000000 | 00000 |
| M8 | 1.25 | 13 | 8 | 50 | 000000000 | 0000 |
| M10 | 1.25 | 17 | 10 | 10 | 000000000 | 0000 |
| M10 | 1.5 | 17 | 10 | 25 | 000000000 | 0000 |
| M12 | 1.25 | 19 | 12 | 5 | 000000000 | 00000 |
| M12 | 1.75 | 19 | 12 | 10 | 000000000 | 0000 |
| M14 | 2 | 22 | 14 | 10 | 000000000 | 0000 |
| M16 | 2 | 24 | 16 | 10 | 000000000 | 0000 |
| M18 | 2.5 | 27 | 18 | 5 | 000000000 | 0000 |
| M20 | 2.5 | 30 | 20 | 5 | 000000000 | 0000 |
| M24 | 3 | 36 | 24 | 1 | 000000000 | 0000 |
| M30 | 3.5 | 46 | 30 | 1 | 000000000 | 0000 |
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.
Zinc yellow-chromate plated steel locknuts resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Pkg. Qty. | Pkg. | |
Zinc Yellow-Chromate Plated Steel—Grade 8 | |||||
|---|---|---|---|---|---|
| 1/4"-20 | 7/16" | 7/32" | 50 | 000000000 | 000000 |
| 1/4"-28 | 7/16" | 7/32" | 50 | 000000000 | 00000 |
| 5/16"-18 | 1/2" | 17/64" | 50 | 000000000 | 00000 |
| 5/16"-24 | 1/2" | 17/64" | 50 | 000000000 | 00000 |
| 3/8"-16 | 9/16" | 21/64" | 25 | 000000000 | 0000 |
| 3/8"-24 | 9/16" | 21/64" | 25 | 000000000 | 0000 |
| 7/16"-14 | 11/16" | 3/8" | 10 | 000000000 | 0000 |
| 7/16"-20 | 11/16" | 3/8" | 10 | 000000000 | 0000 |
| 1/2"-13 | 3/4" | 7/16" | 10 | 000000000 | 0000 |
| 1/2"-20 | 3/4" | 7/16" | 10 | 000000000 | 0000 |
| 9/16"-12 | 7/8" | 31/64" | 10 | 000000000 | 0000 |
| 5/8"-11 | 15/16" | 35/64" | 5 | 000000000 | 0000 |
| 5/8"-18 | 15/16" | 35/64" | 5 | 000000000 | 0000 |
| 3/4"-10 | 1 1/8" | 41/64" | 5 | 000000000 | 0000 |
| 3/4"-16 | 1 1/8" | 41/64" | 5 | 000000000 | 0000 |
| 7/8"-9 | 1 5/16" | 3/4" | 5 | 000000000 | 00000 |
| 1"-8 | 1 1/2" | 55/64" | 1 | 000000000 | 0000 |
| 1"-14 | 1 1/2" | 55/64" | 1 | 000000000 | 0000 |
High-Strength Steel Serrated Flange Locknuts—Grade 8
Serrations grip the material surface instead of the threads for easy installation and mild vibration resistance. The flange distributes pressure where the nut meets the material surface, eliminating the need for a separate washer. They're about 25% stronger than medium-strength steel flange locknuts. Height includes the flange.
Zinc-plated steel flange 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 Yellow-Chromate Plated Steel—Grade 8 | |||||||
| 9/16"-12 | 7/8" | 1/2" | 1 3/16" | 0.05" | 5 | 000000000 | 00000 |
Metric High-Strength Steel Nylon-Insert
Flange Locknuts—Class 10
A nylon insert firmly grips threads to resist loosening and a flange distributes the load over a large area. They’re reusable, but their holding power lessens with each use. Made from Class 10 steel, they're about 25% stronger than medium-strength steel flange nuts and comparable in strength to Class 10.9 bolts. They have a zinc-yellow chromate plating to resist corrosion in wet environments. Height includes the flange.
For technical drawings and 3-D models, click on a part number.
Thread | Flange | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Wd., mm | Ht., mm | Dia., mm | Thick., mm | Insert Max. Temp., °F | Specifications Met | Pkg. Qty. | Pkg. | |
Zinc Yellow-Chromate Plated Steel—Class 10 | ||||||||||
| M6 | 1 | 10 | 9.1 | 14.2 | 1.1 | 250° | DIN 6926 | 50 | 000000000 | 000000 |
| M8 | 1.25 | 13 | 11 | 17.9 | 1.2 | 250° | DIN 6926 | 50 | 000000000 | 00000 |
| M10 | 1.5 | 15 | 13.5 | 21.8 | 1.5 | 250° | DIN 6926 | 25 | 000000000 | 00000 |
| M12 | 1.75 | 18 | 16.1 | 26 | 1.8 | 250° | DIN 6926 | 25 | 000000000 | 00000 |
| M14 | 2 | 21 | 18.2 | 29.9 | 2.1 | 250° | DIN 6926 | 10 | 000000000 | 0000 |
| M16 | 2 | 24 | 20.3 | 34.5 | 2.4 | 250° | DIN 6926 | 5 | 000000000 | 00000 |
| M20 | 2.5 | 30 | 24.8 | 42.8 | 3 | 250° | DIN 6926 | 1 | 000000000 | 0000 |
High-Strength Steel Nylon-Insert
Flange Locknuts—Grade G
These locknuts have a nylon insert that firmly grips threads to resist loosening and a flange that distributes the load over a large area. They’re reusable, but their holding power lessens with each use. Made from Grade G steel, they're about 25% stronger than medium-strength steel flange locknuts and are comparable in strength to Grade 8 bolts. A zinc-yellow chromate plating provides corrosion resistance in wet environments. Height includes the flange.
For technical drawings and 3-D models, click on a part number.
Flange | ||||||||
|---|---|---|---|---|---|---|---|---|
| Thread Size | Wd. | Ht. | Dia. | Thick. | Insert Max. Temp., °F | Pkg. Qty. | Pkg. | |
Zinc Yellow-Chromate Plated Steel—Grade G | ||||||||
| 1/4"-20 | 7/16" | 19/64" | 0.56" | 0.04" | 250° | 100 | 000000000 | 00000 |
| 5/16"-18 | 1/2" | 11/32" | 0.68" | 0.05" | 250° | 50 | 000000000 | 0000 |
| 3/8"-16 | 9/16" | 13/32" | 0.81" | 0.06" | 250° | 50 | 000000000 | 0000 |
| 1/2"-13 | 3/4" | 35/64" | 1.07" | 0.08" | 250° | 25 | 000000000 | 0000 |
| 5/8"-11 | 15/16" | 43/64" | 1.33" | 0.1" | 250° | 10 | 000000000 | 0000 |
| 3/4"-10 | 1 1/8" | 13/16" | 1.585" | 0.11" | 250° | 5 | 000000000 | 0000 |