About Nuts, Materials, and Finishes
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Medium-Strength Steel Thin Hex Nuts
Also known as jam nuts, these 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.
Zinc-plated steel nuts resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
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 1/8"-12 | 1 11/16" | 39/64" | 1 | 000000000 | 00000 |
High-Strength Steel Thin Hex Nuts—Grade 8
Also known as jam nuts, these are about half the height of standard hex nuts. Use in low-clearance applications or jam one against a standard hex nut to hold it in place. They're about 25% stronger than medium-strength steel thin hex nuts.
Zinc yellow-chromate-plated steel nuts are more corrosion resistant in wet environments than zinc-plated steel nuts.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Specifications Met | Pkg. Qty. | Pkg. | |
Zinc Yellow-Chromate-Plated Steel—Grade 8 | ||||||
|---|---|---|---|---|---|---|
| 1 1/8"-12 | 1 11/16" | 39/64" | ASME B18.2.2 | 1 | 000000000 | 00000 |
Low-Strength Steel Thin Hex Nuts
Also known as jam nuts, these 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.
Nuts with fine and extra-fine thread spacing are less likely to loosen from vibration than nuts with coarse thread spacing.
Zinc-plated steel nuts resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
18-8 Stainless Steel Thin Hex Nuts
These nuts 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 1/8"-12 | 1 11/16" | 39/64" | 1 | 000000000 | 00000 |
Super-Corrosion-Resistant 316 Stainless Steel Thin Hex Nuts
These nuts have excellent chemical resistance and can be used in saltwater environments. 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. | |
316 Stainless Steel | |||||
|---|---|---|---|---|---|
| 1 1/8"-12 | 1 11/16" | 39/64" | 1 | 000000000 | 000000 |
Brass Thin Hex Nuts
These nuts are corrosion resistant in wet environments, electrically conductive, and nonmagnetic. 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. | |
Brass | |||||
|---|---|---|---|---|---|
| 1 1/8"-12 | 1 11/16" | 39/64" | 1 | 000000000 | 000000 |
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.
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.
| Thread Size | Wd. | Ht. | Insert Max. Temp., °F | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel—Grade 8 | ||||||
|---|---|---|---|---|---|---|
| 1 1/8"-12 | 1 53/64" | 41/64" | 220° | 1 | 000000000 | 000000 |
High-Strength Steel Thin Heavy Nylon-Insert Locknuts
About half the height and 10% wider than standard nylon-insert locknuts, these locknuts are often referred to as thin heavy locknuts. Use them in low-clearance applications or jam one against a heavy 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. Comparable in strength to Grade 8 bolts, these locknuts are about three times stronger than the same locknut made with low-strength steel.
Steel locknuts without a finish are ready to be welded, painted, and finished.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Insert Max. Temp., °F | Each | |
Steel—ASTM Grade C | |||||
|---|---|---|---|---|---|
| 1 1/8"-12 | 1 7/8" | 1" | 250° | 000000000 | 000000 |
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.
Thin Steel-Insert Locknuts for Extreme Vibration
About two-thirds the height of standard steel-insert locknuts, use these in low-clearance applications or jam one against a hex nut to hold it in place. When installed, the steel insert grips the threads and lifts away from the nut body, isolating the insert from the nut’s load to resist spinoff caused by vibration. They're often used in shakers and vibrating equipment. The strength of the bolt should match the strength of the nut to prevent damaging threads. Made from Grade 8 steel, these nuts are suitable for fastening most machinery and equipment.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Each | |
Steel—Grade 8 | ||||
|---|---|---|---|---|
| 1 1/8"-12 | 1 11/16" | 3/4" | 000000000 | 000000 |