For critical applications requiring the highest level of bolt load control, the patented HYTORC Nut system provides industry-leading joint integrity. This three-piece fastener applies pure tension to the bolt to prevent thread damage and ensure bolt load accuracy. Available in a variety of materials to suit all applications, from extreme temperatures to harsh climates.
TURBINE STYLE LIMITED RADIUS NUT
Our most popular Nut! Designed to overcome the tight radial restrictions and high temperatures in steam turbine engines. When a bolted connection has a challenging counter bore or flanged radius, the TN-Series Nut will solve the problem.CHEMICAL STYLE LIMITED RADIUS NUT
The CT Nut’s thicker outer sleeve minimizes stress and allows it to handle high loads at elevated temperatures. The through-bolt design makes them ideal for applications with high stud protrusions from the flange.LOW CLEARENCE STYLE NUT
The low-profile SN Series is the ideal choice for tight overhead restrictions where traditional fasteners can’t fit. The through-bolt design is useful for situations where high stud extensions make standard nuts impractical.GAS TURBINE STYLE NUT
Originally specified for Gas Turbine applications to handle elevated temperatures, high stress and greater load to breakout factors. For oversized applications where higher loads and breakout torques are needed.Blank Size | Size Code | Nominal Stud Size | OD | H | Max Stroke |
01 | 014 | 7/8 | 1.400 | 1.313 | 0.197 |
02 | 100 | 1 | 1.600 | 1.500 | 0.225 |
03 | 102 | 1-1/8 | 1.800 | 1.688 | 0.254 |
04 | 104 | 1-1/4 | 2.000 | 1.875 | 0.281 |
05 | 106 | 1-3/8 | 2.200 | 2.063 | 0.310 |
06 | 108 | 1-1/2 | 2.400 | 2.250 | 0.338 |
07 | 110 | 1-5/8 | 2.600 | 2.438 | 0.366 |
08 | 112 | 1-3/4 | 2.800 | 2.625 | 0.394 |
09 | 114 | 1-7/8 | 3.000 | 2.813 | 0.422 |
10 | 200 | 2 | 3.200 | 3.000 | 0.450 |
11 | 204 | 2-1/4 | 3.600 | 3.375 | 0.506 |
12 | 208 | 2-1/2 | 4.000 | 3.750 | 0.563 |
13 | 212 | 2-3/4 | 4.400 | 4.125 | 0.619 |
14 | - | - | 4.535 | 4.253 | 0.638 |
15 | 300 | 3 | 4.800 | 4.500 | 0.675 |
16 | - | - | 5.040 | 7.725 | 0.709 |
17 | 304 | 3-14 | 5.200 | 4.875 | 0.731 |
18 | 308 | 3-1/2 | 5.600 | 5.250 | 0.788 |
19 | 312 | 3-3/4 | 6.000 | 5.625 | 0.844 |
20 | 400 | 4 | 6.400 | 6.000 | 0.900 |
21 | 404 | 4-1/4 | 6.800 | 6.375 | 0.956 |
22 | 408 | 4-1/2 | 7.200 | 6.750 | 1.013 |
23 | 412 | 4-3/4 | 7.600 | 7.125 | 1.069 |
24 | 500 | 5 | 8.000 | 7.500 | 1.125 |
25 | 504 | 5-1/4 | 8.400 | 7.875 | 1.181 |
26 | 508 | 5-1/2 | 8.800 | 8.250 | 1.238 |
Blank Size | Size Code | Nominal Stud Size | OD | H | Max Stroke |
01 | 022 | M20 | 35.56 | 33.35 | 5.00 |
02 | 024 | M24 | 40.64 | 38.10 | 5.72 |
03 | 027 | M27 | 45.72 | 42.88 | 6.45 |
04 | 030 | M30 | 50.80 | 47.63 | 7.14 |
05 | 033 | M33 | 55.88 | 52.40 | 7.87 |
06 | 036 | M36/M39 | 60.96 | 60.96 | 8.59 |
07 | 039 | M42* | 66.04 | 61.93 | 9.30 |
08 | 042 | M45 | 71.12 | 66.68 | 10.01 |
09 | 045 | M48 | 76.20 | 71.45 | 10.72 |
10 | 048 | M52 | 81.28 | 76.20 | 11.43 |
11 | 052 | M56 | 91.44 | 85.73 | 12.85 |
12 | 056 | M64 | 101.60 | 95.25 | 14.30 |
13 | 064 | M70 | 111.76 | 104.78 | 15.72 |
14 | 070 | M72 | 115.19 | 108.03 | 16.21 |
15 | 072 | M76 | 121.92 | 114.30 | 18.01 |
16 | 076 | M80 | 128.02 | 120.02 | 18.01 |
17 | 080 | - | 132.08 | 123.83 | 18.57 |
18 | - | M90 | 142.24 | 133.35 | 20.02 |
19 | 090 | M95 | 152.40 | 142.88 | 21.44 |
20 | 095 | M100 | 162.56 | 152.40 | 22.86 |
21 | 100 | M110 | 172.72 | 161.93 | 24.28 |
22 | 110 | M115 | 182.88 | 171.45 | 25.73 |
23 | 115 | M120 | 193.04 | 180.98 | 27.15 |
24 | 120 | M125 | 203.20 | 190.50 | 28.58 |
25 | 125 | M130 | 213.36 | 200.03 | 30.00 |
26 | 130 | M140 | 223.52 | 209.55 | 31.45 |
Blank Size | Size Code | Nominal Stud Size | OD | H | Max Stroke |
01 | 014 | 7/8 | 1.660 | 1.429 | 0.201 |
02 | 100 | 1 | 1.811 | 1.559 | 0.220 |
03 | 102 | 1-1/8 | 2.038 | 1.754 | 0.247 |
04 | 104 | 1-1/4 | 2.264 | 1.949 | 0.275 |
05 | 106 | 1-3/8 | 2.491 | 2.144 | 0.302 |
06 | - | - | 2.717 | 2.339 | 0.330 |
07 | 108 | 1-1/2 | 2.943 | 2.533 | 0.357 |
08 | 110 | 1-5/8 | 3.170 | 2.728 | 0.384 |
09 | 112 | 1-3/4 | 3.396 | 2.923 | 0.412 |
10 | 114 | 1-7/8 | 3.623 | 3.118 | 0.439 |
11 | 200 | 2 | 3.925 | 3.378 | 0.476 |
12 | 204 | 2-1/4 | 4.226 | 3.638 | 0.513 |
13 | 208 | 2-1/2 | 4.830 | 3.914 | 0.586 |
14 | 212 | 2-3/4 | 5.283 | 4.547 | 0.614 |
15 | - | - | 5.434 | 4.677 | 0.659 |
16 | 300 | 3 | 5.736 | 4.937 | 0.696 |
17 | - | - | 6.038 | 5.197 | 0.732 |
18 | 304 | 3-1/4 | 6.340 | 5.457 | 0.769 |
19 | 308 | 3-1/2 | 6.793 | 5.846 | 0.824 |
Blank Size | Size Code | Nominal Stud Size | OD | H | Max Stroke |
01 | 022 | M22 | 42.16 | 36.30 | 5.11 |
02 | 024 | M24 | 46.00 | 39.30 | 5.59 |
03 | 027 | M27 | 51.77 | 44.55 | 6.27 |
04 | 030 | M30 | 57.51 | 49.50 | 6.99 |
05 | 033 | M33 | 63.27 | 54.46 | 7.67 |
06 | 036 | M36 | 69.01 | 59.41 | 8.38 |
07 | 039 | M39 | 74.75 | 64.34 | 9.07 |
08 | 042 | M42 | 80.52 | 69.29 | 9.75 |
09 | 045 | M45 | 86.26 | 74.24 | 10.46 |
10 | 048 | M48 | 92.02 | 79.20 | 11.15 |
11 | 052 | M52 | 99.70 | 85.80 | 12.09 |
12 | 056 | M56 | 107.34 | 92.41 | 13.03 |
13 | 064 | M64 | 122.68 | 99.42 | 14.88 |
14 | 070 | M70 | 134.19 | 115.49 | 15.60 |
15 | 072 | M72 | 138.02 | 118.80 | 16.74 |
16 | 076 | M76 | 145.69 | 125.40 | 17.68 |
17 | 080 | M80 | 153.37 | 132.00 | 18.59 |
18 | - | - | 161.04 | 138.61 | 19.53 |
19 | 090 | M90 | 172.54 | 148.49 | 20.93 |
Blank Size | Size Code | Nominal Stud Size | OD | H | Max Stroke |
01 | 014 | 5/8-7/8 | 1.880 | 1.210 | - |
02 | 100 | 1 | 2.050 | 1.210 | 0.225 |
03 | 102 | 1-1/8 | 2.313 | 1.360 | 0.249 |
04 | 104 | 1-1/4 | 2.500 | 1.518 | 0.281 |
05 | 106 | 1-3/8 | 2.688 | 1.670 | 0.310 |
06 | 108 | 1-1/2 | 2.938 | 1.821 | 0.338 |
07 | 110 | 1-5/8 | 3.250 | 1.974 | 0.366 |
08 | 112 | 1-3/4 | 3.417 | 2.125 | 0.394 |
09 | 114 | 1-7/8 | 3.667 | 2.277 | 0.422 |
10 | 200 | 2 | 3.900 | 2.429 | 0.450 |
11 | 204 | 2-1/4 | 4.300 | 2.732 | 0.506 |
12 | 208 | 2-1/2 | 4.800 | 3.035 | 0.563 |
13 | 212 | 2-3/4 | 5.250 | 3.338 | 0.619 |
14 | - | 2-7/8 | 5.375 | 3.440 | 0.638 |
15 | 300 | 3 | 5.750 | 3.643 | 0.675 |
16 | - | - | 5.750 | 3.824 | 0.709 |
17 | 304 | 3-1/4 | 6.083 | 3.945 | 0.731 |
18 | 308 | 3-1/2 | 6.667 | 4.250 | 0.788 |
19 | 312 | 3-3/4 | 7.000 | 4.550 | 0.844 |
20 | 400 | 4 | 7.300 | 4.857 | 0.900 |
21 | 404 | 4-1/4 | 7.750 | 5.159 | 0.956 |
22 | 408 | 4-1/2 | 8.200 | 5.463 | 1.013 |
23 | 412 | 4-3/4 | 8.700 | 5.930 | 1.069 |
Blank Size | Size Code | Nominal Stud Size | OD | H | Max Stroke |
01 | 014 | M20 | 52.07 | 30.73 | - |
02 | 024 | M24 | 52.07 | 30.73 | 5.71 |
03 | 027 | M27 | 58.67 | 34.54 | 6.47 |
04 | 030 | M30 | 63.50 | 38.56 | 7.23 |
05 | 033 | M33 | 68.33 | 42.42 | 7.81 |
06 | 036 | M36/39 | 74.68 | 46.25 | 8.57 |
07 | 042 | M42 | 82.55 | 50.14 | 9.33 |
08 | 045 | M45 | 86.87 | 53.98 | 10.09 |
09 | 048 | M48 | 93.22 | 57.91 | 10.66 |
10 | 052 | M52 | 99.06 | 61.72 | 11.43 |
11 | 056 | M56 | 109.22 | 69.34 | 12.95 |
12 | 064 | M64 | 121.92 | 77.22 | 14.28 |
13 | 070 | M70 | 133.35 | 84.84 | 15.81 |
14 | 072 | M72 | 136.65 | 87.38 | 16.19 |
15 | 076 | M76 | 146.05 | 92.53 | 17.14 |
16 | 080 | M80 | 146.05 | 97.03 | 18.09 |
17 | - | - | 154.43 | 100.33 | 18.66 |
18 | 090 | M90 | 169.42 | 107.95 | 20.95 |
19 | 095 | M95 | 177.80 | 115.57 | 21.52 |
20 | 100 | M100 | 185.42 | 123.44 | 22.86 |
21 | 110 | M110 | 196.85 | 131.06 | 24.38 |
22 | 115 | M115 | 208.28 | 138.76 | 25.71 |
23 | 120 | M120 | 220.98 | 150.62 | 27.24 |
Blank Size | Size Code | Nominal Stud Size | OD | H | Max Stroke |
02 | 100 | 1 | 1.850 | 1.648 | 0.205 |
03 | 102 | 1-1/8 | 2.081 | 1.823 | 0.263 |
04 | 104 | 1-1/4 | 2.313 | 2.146 | 0.281 |
05 | 106 | 1-3/8 | 2.544 | 2.334 | 0.338 |
06 | 108 | 1-1/2 | 2.775 | 2.487 | 0.338 |
07 | 110 | 1-5/8 | 3.006 | 2.656 | 0.352 |
08 | 112 | 1-3/4 | 3.238 | 2.750 | 0.394 |
09 | 114 | 1-7/8 | 3.469 | 3.094 | 0.422 |
10 | 200 | 2 | 3.700 | 3.145 | 0.450 |
11 | 204 | 2-1/4 | 4.163 | 3.540 | 0.506 |
12 | 208 | 2-1/2 | 4.625 | 4.073 | 0.574 |
13 | 212 | 2-3/4 | 5.088 | 4.349 | 0.680 |
14 | 214 | 2-7/8 | 5.244 | 4.477 | 0.698 |
15 | 300 | 3 | 5.550 | 4.787 | 0.675 |
Blank Size | Size Code | Nominal Stud Size | OD | H | Max Stroke |
02 | 024 | M24 | 46.99 | 41.85 | 6.34 |
03 | 027 | M27 | 52.86 | 46.30 | 6.67 |
04 | 030 | M30 | 58.75 | 54.51 | 7.14 |
05 | 033 | M33 | 64.62 | 59.28 | 8.57 |
06 | 036 | M36/M39 | 70.49 | 63.17 | 8.57 |
07 | 042 | M42* | 76.35 | 67.46 | 8.93 |
08 | 045 | M45 | 82.25 | 69.85 | 10.00 |
09 | 048 | M48 | 88.11 | 78.59 | 10.72 |
10 | 052 | M52 | 93.98 | 79.88 | 11.43 |
11 | 056 | M56 | 105.74 | 89.92 | 12.85 |
12 | 064 | M64 | 117.48 | 103.45 | 14.57 |
13 | 070 | M70 | 129.24 | 110.46 | 17.26 |
14 | 072 | M72 | 133.20 | 113.72 | 17.74 |
15 | 076 | M76 | 140.97 | 121.59 | 17.15 |