Lock Nut is generally used to secure a cable gland, reducer, and adaptor in position at the equipment and enclosure. Lock Nuts are widely used in electrical installation due to low corrosion effect.
| Metric Lock Nut | |||||||
| Size | A/F | A/C | L | T | |||
| M16 | 20 | 22 | 4 | M16x1.5 | |||
| M20 | 24 | 26 | 4 | M20x1.5 | |||
| M25 | 30 | 33 | 4 | M25x1.5 | |||
| M32 | 36 | 39 | 4.25 | M32x1.5 | |||
| M40 | 45 | 50 | 4.5 | M40x1.5 | |||
| M50 | 55 | 60 | 5 | M50x1.5 | |||
| M63 | 68 | 73 | 5.5 | M63x1.5 | |||
| M75 | 81 | 88 | 6 | M75x1.5 | |||
| M82 | 90 | 98 | 6 | M82x1.5 | |||
| M90 | 100 | 110 | 6.5 | M90x1.5 | |||
| M100 | 110 | 120 | 7 | M100x1.5 | |||
| M110 | 122 | 135 | 7.5 | M110x1.5 | |||
| M115 | 128 | 140 | 7.5 | M115x1.5 | |||
| M125 | 138 | 149 | 7.5 | M125x1.5 | |||
| NPT Lock Nut | |||||||
| Size | A/F | A/C | L | T | |||
| ½" | 27 | 30 | 5 | ½" NPS | |||
| ¾" | 33 | 36.25 | 4.75 | ¾" NPS | |||
| 1" | 41 | 45 | 4.75 | 1" NPS | |||
| 1¼ " | 50 | 55 | 4.75 | 1¼ " NPS | |||
| 1½" | 60 | 66 | 5 | 1½" NPS | |||
| 2" | 70 | 77 | 5 | 2" NPS | |||
| 2½" | 80 | 88 | 10 | 1½" NPS | |||
| 3" | 95 | 100 | 10 | 3" NPS | |||
| 3½" | 110 | 120 | 10 | 3½" NPS | |||
| BSP Lock Nut | |||||||
| Size | A/F | A/C | L | T | |||
| ½" | 24 | 26.2 | 4 | ½"G | |||
| ¾" | 30 | 34 | 4 | ¾"G | |||
| 1" | 36 | 39 | 4.25 | 1"G | |||
| 1¼ " | 45 | 50 | 4.5 | 1¼ "G | |||
| 1½" | 55 | 60 | 5 | 1½"G | |||
| 2" | 68 | 73 | 5.5 | 2"G | |||
| 2½" | 81 | 88 | 6 | 2½"G | |||
| 3" | 100 | 110 | 6.5 | 3"G | |||
| 3½" | 110 | 120 | 7 | 3½"G | |||
| 4" | 122 | 135 | 7.5 | 4"G | |||
| PG Lock Nut | |||||||
| Size | A/F | A/C | L | T | |||
| PG7 | 15 | 16.5 | 3.5 | PG7 | |||
| PG9 | 18 | 20 | 3.5 | PG9 | |||
| PG11 | 21 | 23 | 3.5 | PG11 | |||
| PG13.5 | 24 | 26.2 | 4 | PG13.5 | |||
| PG16 | 26 | 28.6 | 4 | PG16 | |||
| PG21 | 31 | 35 | 4 | PG21 | |||
| PG29 | 41 | 46 | 4.25 | PG29 | |||
| PG36 | 51 | 56.5 | 5 | PG36 | |||
| PG45 | 60 | 65 | 5.5 | PG45 | |||
| PG48 | 65 | 70 | 6 | PG48 | |||
| ET Lock Nut | |||||||
| Size | A/F | A/C | L | T | |||
| ET ¾ | 24 | 26 | 3.5 | ET ¾ | |||
| ET 1 | 30 | 33 | 3.5 | ET 1 | |||
| ET 1¼ | 35 | 40 | 4 | ET 1¼ | |||
| ET 1½ | 41 | 46 | 4 | ET 1½ | |||
| ET 2 | 55 | 60 | 4 | ET 2 | |||
| ET 2½ | 67 | 72 | 4.25 | ET 2½ | |||
| ET 3 | 77 | 82 | 4.5 | ET 3 | |||
| ET 3½ | 95 | 100 | 5 | ET 3½ | |||