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| Right Hand | Left Hand |
System of Measurement System of Measurement |
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Thread Size Thread Size |
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Nut Type Nut Type |
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Finish Finish |
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Width Width |
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Thread Spacing Thread Spacing |
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For Turnbuckle Material For Turnbuckle Material |
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Thread Fit Thread Fit |
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Drive Style Drive Style |
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 | External Hex |
About Turnbuckles and End Fittings
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About Nuts, Materials, and Finishes
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Left-Hand Threaded Medium-Strength Steel Thin Hex Nuts
These nuts tighten when turned to the left; once fastened, they resist loosening from counterclockwise motion. Also known as jam nuts, they are about half the height of standard hex nuts. Use them in low-clearance applications or jam one against another nut to hold it in place. They're suitable for fastening most machinery and equipment when used in conjunction with a standard hex nut. 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 5 | |||||
|---|---|---|---|---|---|
| 1/4"-20 | 7/16" | 5/32" | 100 | 000000000 | 000000 |
| 1/4"-28 | 7/16" | 5/32" | 100 | 000000000 | 00000 |
| 5/16"-18 | 1/2" | 3/16" | 50 | 000000000 | 00000 |
| 5/16"-24 | 1/2" | 3/16" | 50 | 000000000 | 0000 |
| 3/8"-16 | 9/16" | 7/32" | 50 | 000000000 | 00000 |
| 3/8"-24 | 9/16" | 7/32" | 50 | 000000000 | 00000 |
| 7/16"-14 | 11/16" | 1/4" | 50 | 000000000 | 00000 |
| 7/16"-20 | 11/16" | 1/4" | 25 | 000000000 | 0000 |
| 1/2"-13 | 3/4" | 5/16" | 25 | 000000000 | 00000 |
| 1/2"-20 | 3/4" | 5/16" | 25 | 000000000 | 00000 |
| 9/16"-18 | 7/8" | 5/16" | 10 | 000000000 | 00000 |
| 5/8"-11 | 15/16" | 3/8" | 10 | 000000000 | 0000 |
| 5/8"-18 | 15/16" | 3/8" | 10 | 000000000 | 0000 |
| 3/4"-10 | 1 1/8" | 27/64" | 10 | 000000000 | 00000 |
| 3/4"-16 | 1 1/8" | 27/64" | 10 | 000000000 | 00000 |
| 7/8"-9 | 1 5/16" | 31/64" | 5 | 000000000 | 00000 |
| 7/8"-14 | 1 5/16" | 31/64" | 5 | 000000000 | 00000 |
| 1"-8 | 1 1/2" | 35/64" | 1 | 000000000 | 0000 |
| 1"-14 | 1 1/2" | 35/64" | 1 | 000000000 | 0000 |
| 1 1/8"-7 | 1 11/16" | 39/64" | 1 | 000000000 | 00000 |
| 1 1/8"-12 | 1 11/16" | 39/64" | 1 | 000000000 | 0000 |
| 1 1/4"-7 | 1 7/8" | 23/32" | 1 | 000000000 | 0000 |
| 1 1/4"-12 | 1 7/8" | 23/32" | 1 | 000000000 | 0000 |
| 1 1/2"-6 | 2 1/4" | 27/32" | 1 | 000000000 | 00000 |
| 1 1/2"-12 | 2 1/4" | 27/32" | 1 | 000000000 | 00000 |
| 2"-12 | 3" | 1 3/32" | 1 | 000000000 | 00000 |
Left-Hand Threaded Low-Strength Steel Thin Hex Nuts
These nuts tighten when turned to the left; once fastened, they resist loosening from counterclockwise motion. Also known as jam nuts, they are about half the height of standard hex nuts. Use them in low-clearance applications or jam one against another nut to hold it in place. About half the strength of medium-strength steel thin nuts, use them for light duty fastening applications, such as securing access panels.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Pkg. Qty. | Pkg. | |
Steel—Grade 2 | |||||
|---|---|---|---|---|---|
| 1/4"-20 | 7/16" | 5/32" | 50 | 000000000 | 00000 |
| 1/4"-28 | 7/16" | 5/32" | 100 | 000000000 | 0000 |
| 5/16"-18 | 1/2" | 3/16" | 50 | 000000000 | 0000 |
| 5/16"-24 | 1/2" | 3/16" | 100 | 000000000 | 00000 |
| 3/8"-16 | 9/16" | 7/32" | 25 | 000000000 | 0000 |
| 3/8"-24 | 9/16" | 7/32" | 50 | 000000000 | 00000 |
| 1/2"-13 | 3/4" | 5/16" | 25 | 000000000 | 00000 |
| 1/2"-20 | 3/4" | 5/16" | 25 | 000000000 | 00000 |
| 5/8"-11 | 15/16" | 3/8" | 10 | 000000000 | 0000 |
| 5/8"-18 | 15/16" | 3/8" | 10 | 000000000 | 0000 |
| 3/4"-10 | 1 1/8" | 27/64" | 10 | 000000000 | 0000 |
| 3/4"-16 | 1 1/8" | 27/64" | 10 | 000000000 | 00000 |
| 1"-8 | 1 1/2" | 35/64" | 5 | 000000000 | 00000 |
| 1"-14 | 1 1/2" | 35/64" | 5 | 000000000 | 00000 |
| 1 1/4"-12 | 1 7/8" | 23/32" | 1 | 000000000 | 0000 |
Left-Hand Threaded 18-8 Stainless Steel Thin Hex Nuts
These nuts tighten when turned to the left; once fastened, they resist loosening from counterclockwise motion. They have good chemical resistance and may be mildly magnetic. Also known as jam nuts, they are about half the height of standard hex nuts. Use them in low-clearance applications or jam one against another nut to hold it in place.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | |||||
|---|---|---|---|---|---|
| 1/4"-20 | 7/16" | 5/32" | 5 | 000000000 | 00000 |
| 1/4"-28 | 7/16" | 5/32" | 5 | 000000000 | 0000 |
| 5/16"-18 | 1/2" | 3/16" | 5 | 000000000 | 0000 |
| 5/16"-24 | 1/2" | 3/16" | 5 | 000000000 | 0000 |
| 3/8"-16 | 9/16" | 7/32" | 5 | 000000000 | 0000 |
| 3/8"-24 | 9/16" | 7/32" | 5 | 000000000 | 0000 |
| 1/2"-13 | 3/4" | 5/16" | 5 | 000000000 | 0000 |
| 1/2"-20 | 3/4" | 5/16" | 5 | 000000000 | 0000 |
| 5/8"-11 | 15/16" | 3/8" | 1 | 000000000 | 0000 |
| 5/8"-18 | 15/16" | 3/8" | 1 | 000000000 | 0000 |
| 3/4"-10 | 1 1/8" | 27/64" | 1 | 000000000 | 00000 |
| 3/4"-16 | 1 1/8" | 27/64" | 1 | 000000000 | 00000 |
Jam Nuts for Turnbuckles
Tighten these nuts against the turnbuckle body to prevent the end fitting from unscrewing.
| Thread Size | Wd. | Ht. | Includes | Each | |
Grade 2 Steel | |||||
|---|---|---|---|---|---|
| 1/4"-20 | 7/16" | 5/32" | One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut | 00000000 | 00000 |
| 5/16"-18 | 1/2" | 3/16" | One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut | 00000000 | 0000 |
| 3/8"-16 | 9/16" | 7/32" | One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut | 00000000 | 0000 |
| 1/2"-13 | 3/4" | 5/16" | One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut | 00000000 | 0000 |
| 5/8"-11 | 15/16" | 25/64" | One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut | 00000000 | 0000 |
| 3/4"-10 | 1 1/8" | 27/64" | One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut | 00000000 | 0000 |
| 7/8"-9 | 1 19/64" | 31/64" | One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut | 00000000 | 0000 |
| 1"-8 | 1 15/32" | 35/64" | One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut | 00000000 | 0000 |
| Thread Size | Wd. | Ht. | Includes | Each | |
Grade 2 Galvanized Steel | |||||
|---|---|---|---|---|---|
| 1/4"-20 | 7/16" | 5/32" | One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut | 00000000 | 00000 |
| 5/16"-18 | 1/2" | 3/16" | One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut | 00000000 | 0000 |
| 3/8"-16 | 9/16" | 7/32" | One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut | 00000000 | 0000 |
| 1/2"-13 | 3/4" | 5/16" | One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut | 00000000 | 0000 |
| 5/8"-11 | 15/16" | 25/64" | One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut | 00000000 | 0000 |
| 3/4"-10 | 1 1/8" | 27/64" | One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut | 00000000 | 0000 |
| 7/8"-9 | 1 19/64" | 31/64" | One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut | 00000000 | 00000 |
| 1"-8 | 1 15/32" | 35/64" | One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut | 00000000 | 00000 |
| 1 1/2"-6 | 2 1/4" | 27/32" | One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut | 000000000 | 00000 |
| 1 1/4"-7 | 1 7/8" | 23/32" | One Left-Hand Threaded Jam Nut, One Right-Hand Threaded Jam Nut | 000000000 | 00000 |