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Tamper-Resistant Breakaway Nuts
Aluminum
Zinc Alloy
Zinc-Plated Alloy Steel
18-8 Stainless Steel
The most tamper-resistant nuts we offer, these have a hex head that breaks away upon tightening, leaving a non-removable cone. They can be installed using a standard wrench. Use them to reduce the risk of unwanted removal for objects in public spaces such as signs, lighting fixtures, and displays.
Aluminum nuts are lightweight, corrosion resistant in wet environments, and nonmagnetic.
Zinc alloy and zinc-plated alloy steel nuts are corrosion resistant in wet environments.
18-8 stainless steel nuts have good chemical resistance and may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.
Thread Size | Wd. | Ht. | Ht. After Installation | Breaking Torque, in.-lbs. | Pkg. Qty. | Pkg. | |
Aluminum | |||||||
|---|---|---|---|---|---|---|---|
| 10-24 | 7/16" | 3/8" | 3/16" | 40 | 10 | 000000000 | 00000 |
| 1/4"-20 | 9/16" | 31/64" | 7/32" | 70 | 10 | 000000000 | 0000 |
| 5/16"-18 | 5/8" | 1/2" | 7/32" | 150 | 10 | 000000000 | 00000 |
| 3/8"-16 | 3/4" | 19/32" | 1/4" | 195 | 10 | 000000000 | 00000 |
Zinc Alloy | |||||||
| 10-24 | 7/16" | 25/64" | 3/16" | 40 | 10 | 000000000 | 00000 |
| 1/4"-20 | 9/16" | 15/32" | 7/32" | 60 | 10 | 000000000 | 00000 |
| 5/16"-18 | 5/8" | 1/2" | 7/32" | 110 | 10 | 000000000 | 00000 |
| 3/8"-16 | 3/4" | 37/64" | 1/4" | 150 | 10 | 000000000 | 00000 |
| 1/2"-13 | 1" | 3/4" | 11/32" | 360 | 5 | 000000000 | 00000 |
| 5/8"-11 | 1 1/8" | 51/64" | 3/8" | 360 | 5 | 000000000 | 00000 |
Zinc-Plated Alloy Steel | |||||||
| 3/4"-10 | 1 1/4" | 1" | 13/32" | 1,500 | 100 | 000000000 | 000000 |
18-8 Stainless Steel | |||||||
| 1/4"-20 | 9/16" | 15/32" | 7/32" | 95 | 5 | 000000000 | 00000 |
| 5/16"-18 | 5/8" | 1/2" | 7/32" | 130 | 5 | 000000000 | 00000 |
| 3/8"-16 | 3/4" | 37/64" | 1/4" | 245 | 5 | 000000000 | 00000 |
| 1/2"-13 | 1" | 3/4" | 11/32" | 405 | 100 | 000000000 | 000000 |
| 5/8"-11 | 1 1/8" | 51/64" | 3/8" | 510 | 50 | 000000000 | 000000 |
Thread | ||||||||
|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Wd. | Ht. | Ht. After Installation | Breaking Torque, in.-lbs. | Pkg. Qty. | Pkg. | |
Metric Zinc Alloy | ||||||||
| M6 | 1 | 14mm | 12mm | 6mm | 60 | 10 | 000000000 | 000000 |
| M8 | 1.25 | 16mm | 13mm | 6mm | 110 | 10 | 000000000 | 00000 |
| M10 | 1.5 | 19mm | 15mm | 6mm | 150 | 5 | 000000000 | 00000 |
| M12 | 1.75 | 25mm | 19mm | 9mm | 360 | 5 | 000000000 | 00000 |
Metric 18-8 Stainless Steel | ||||||||
| M6 | 1 | 10mm | 10mm | 5mm | 85 | 10 | 000000000 | 00000 |
| M8 | 1.25 | 13mm | 12mm | 7mm | 185 | 10 | 000000000 | 00000 |
| M10 | 1.5 | 17mm | 15mm | 9mm | 350 | 5 | 000000000 | 00000 |
| M12 | 1.75 | 19mm | 16mm | 9mm | 395 | 5 | 000000000 | 00000 |