HYTORC Nut

Fasteners

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.

Bolt Tensioner - Calibrated Load Accuracy

No other bolting system provides the same level of repeatable accuracy, ensuring even bolt load to eliminate joint failure and unintentional nut loosening.

工具寿命

Other bolting systems put the reaction arm and square drive on opposite sides of the tool causing high stress in the body of the tool, which can lead to failure over time. The HYTORC Nut puts the action and reaction on the square drive axis to eliminate the majority of internal stress, and increase the lifetime of your tools.

Gall-free Removal

The HYTORC Nut is the only fastener that can guarantee the elimination of galled or damaged threads on installation and removal. These fasteners have been installed on various high temperature applications for ten years and longer, and were removed without damage to the bolts, providing tremendous savings by eliminating the need for bolt replacement.

Documentation

bolt tensioning calculation
industrial bolt
bolt tensioner
industrial bolt
TN SERIES
GT SERIES
CT SERIES
SN SERIES

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.

Imperial

Metric

TN Series (Inch)

空白的大小 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

TN Series (mm)

空白的大小 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

CT Series (Inch)

空白的大小 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

CT Series (mm)

空白的大小 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

SN Series (Inch)

空白的大小 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

SN Series (mm)

空白的大小 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
07 039 M42 82.55 50.14 9.33
08 042 M45 86.87 53.98 10.09
09 045 M48 93.22 57.91 10.66
10 048 M52 99.06 61.72 11.43
11 052 M56 109.22 69.34 12.95
12 056 M64 121.92 77.22 14.28
13 064 M70 133.35 84.84 15.81
14 070 M72 136.65 87.38 16.19
15 072 M76 146.05 92.53 17.14
16 076 M80 146.05 97.03 18.09
17 080 - 154.43 100.33 18.66
18 M90 169.42 107.95 20.95
19 090 M95 177.80 115.57 21.52
20 095 M100 185.42 123.44 22.86
21 100 M110 196.85 131.06 24.38
22 110 M115 208.28 138.76 25.71
23 115 M120 220.98 150.62 27.24

GT Series (Inch)

空白的大小 Size Code Nominal Stud Size OD H Max Stroke
02 100 1 1.850 1.648 1.000
03 102 1-1/8 2.081 1.823 1.125
04 104 1-1/4 2.313 2.146 1.250
05 106 1-3/8 2.544 2.334 1.375
06 108 1-1/2 2.775 2.487 1.500
07 110 1-5/8 3.006 2.656 1.625
08 112 1-3/4 3.238 2.750 1.750
09 114 1-7/8 3.469 3.094 1.875
10 200 2 3.700 3.145 2.000
11 204 2-1/4 4.163 3.540 2.250
12 208 2-1/2 4.625 4.073 2.500
13 212 2-3/4 5.088 4.349 2.750
14 214 2-7/8 5.244 4.477 2.834
15 300 3 5.550 4.787 3.000

GT Series (mm)

空白的大小 Size Code Nominal Stud Size OD H Max Stroke
02 024 M24 46.99 41.85 25.40
03 027 M27 52.86 46.30 28.58
04 030 M30 58.75 54.51 31.75
05 033 M33 64.62 59.28 34.93
06 036 M36/M39 70.49 63.17 38.10
07 042 M42* 76.35 67.46 41.28
08 045 M45 82.25 69.85 44.45
09 048 M48 88.11 78.59 47.63
10 052 M52 93.98 79.88 50.80
11 056 M56 105.74 89.92 57.15
12 064 M64 117.48 103.45 63.50
13 070 M70 129.24 110.46 69.85
14 072 M72 133.20 113.72 71.98
15 076 M76 140.97 121.59 76.20