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.

Tool Longevity

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

mechanical tensioner
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)

Blank Size Size Code Nominal Stud Size OD H Max Stroke
010147/81.4001.3130.197
0210011.6001.5000.225
031021-1/8 1.8001.6880.254
041041-1/42.0001.8750.281
051061-3/82.2002.0630.310
061081-1/22.4002.2500.338
071101-5/82.6002.4380.366
081121-3/42.8002.6250.394
091141-7/83.0002.8130.422
102002 3.2003.0000.450
112042-1/43.6003.3750.506
122082-1/24.0003.7500.563
132122-3/44.4004.1250.619
14 - - 4.5354.2530.638
1530034.8004.5000.675
16 - -5.0407.7250.709
173043-14 5.2004.8750.731
183083-1/25.6005.2500.788
193123-3/46.0005.6250.844
2040046.4006.0000.900
214044-1/46.8006.3750.956
224084-1/27.2006.7501.013
234124-3/47.6007.1251.069
245005 8.0007.5001.125
255045-1/48.4007.8751.181
265085-1/28.8008.2501.238

TN Series (mm)

Blank Size Size Code Nominal Stud Size OD H Max Stroke
01022M2035.5633.355.00
02024M2440.6438.105.72
03027M2745.7242.88 6.45
04030M3050.8047.637.14
05033M3355.8852.407.87
06036M36/M3960.9660.968.59
07039M42*66.0461.939.30
08042M4571.1266.6810.01
09045M4876.2071.4510.72
10048M5281.28 76.2011.43
11052M5691.4485.7312.85
12056M64101.6095.2514.30
13064M70111.76 104.7815.72
14070M72115.19108.0316.21
15072M76121.92114.3018.01
16076M80128.02120.0218.01
17080 - 132.08123.8318.57
18 - M90142.24133.3520.02
19090M95152.40142.8821.44
20095M100162.56152.4022.86
21100M110172.72161.9324.28
22110M115182.88171.4525.73
23115M120193.04180.9827.15
24120M125203.20190.5028.58
25125M130213.36200.0330.00
26130M140223.52209.5531.45

CT Series (Inch)

Blank Size Size Code Nominal Stud Size OD H Max Stroke
010147/81.6601.4290.201
021001 1.8111.5590.220
031021-1/8 2.0381.7540.247
041041-1/42.2641.9490.275
051061-3/8 2.4912.1440.302
06 - -2.7172.3390.330
071081-1/22.9432.5330.357
081101-5/83.1702.7280.384
091121-3/43.3962.9230.412
101141-7/83.6233.1180.439
1120023.9253.3780.476
122042-1/44.2263.6380.513
132082-1/24.8303.9140.586
142122-3/45.2834.5470.614
15 - -5.4344.6770.659
1630035.7364.9370.696
17 - -6.0385.1970.732
183043-1/46.3405.4570.769
193083-1/26.7935.8460.824

CT Series (mm)

Blank Size Size Code Nominal Stud Size OD H Max Stroke
01022M2242.1636.305.11
02024M2446.0039.30 5.59
03027M2751.7744.556.27
04030M3057.5149.506.99
05033M3363.2754.467.67
06036M3669.0159.418.38
07039M3974.7564.349.07
08042M4280.5269.299.75
09045M4586.2674.2410.46
10048M4892.0279.2011.15
11052M5299.7085.8012.09
12056M56107.3492.4113.03
13064M64122.6899.4214.88
14070M70134.19115.4915.60
15072M72138.02118.8016.74
16076M76145.69125.4017.68
17080M80153.37132.0018.59
18- -161.04138.6119.53
19090M90172.54148.4920.93

SN Series (Inch)

Blank Size Size Code Nominal Stud Size OD H Max Stroke
0310012.0501.2140.225
04101-1/82.3131.3600.249
051041-1/42.5001.5200.281
06101-3/82.6881.6700.310
071081-1/22.9381.8210.338
08111-5/83.2501.9740.366
091121-3/43.4172.1250.394
101141-7/83.6672.2770.422
112002 3.9002.4290.450
122042-1/44.3002.7320.506
132082-1/24.8003.0350.563
142122-3/45.2503.3380.619
152142-7/85.3753.4400.638
1630035.7503.6430.675
17302-5.7503.8240.709
183043-1/46.0833.9450.731
193083-1/26.6674.2500.788
203123-3/47.0004.5500.844
2140047.3004.8570.900
224044-1/47.7505.1590.956
234084-1/28.2005.4631.013
244124-3/48.7005.9301.069
2550059.1256.0701.125
265045-1/4 ---
275085-1/210.0006.6771.238
28600610.8757.2841.350

SN Series (mm)

Blank Size Size Code Nominal Stud Size OD H Max Stroke
03024M2452.0730.735.71
04027M2758.6734.546.47
05030M3063.5038.567.23
06033M3368.3342.427.81
07036M36/3974.6846.258.57
08039M4282.5550.149.33
09042M4586.8753.9810.09
10045M4893.2257.9110.66
11048M5299.0661.7211.43
12052M56109.2269.3412.95
13056M64121.9277.2214.28
14064M70133.3584.8415.81
15070M72136.6587.3816.19
16072M76146.0592.5317.14
17076M80146.0597.0318.09
18080-154.43100.3318.66
19 M90169.42107.9520.95
20090M95177.80115.5721.52
21095M100185.42123.4422.86
22100M110196.85131.0624.38
23110M115208.28138.7625.71
24115M120220.98150.6227.24
25120M125231.90154.1828.57
26125M130 ---
27130M140254.00169.6731.43
28140M152276.35184.9134.29

GT Series (Inch)

Blank Size Size Code Nominal Stud Size OD H Max Stroke
0210011.8501.6481.000
031021-1/82.0811.8231.125
041041-1/42.3132.1461.250
051061-3/82.5442.3341.375
061081-1/22.7752.4871.500
071101-5/83.0062.6561.625
081121-3/43.2382.7501.750
091141-7/83.4693.0941.875
1020023.7003.1452.000
112042-1/44.1633.5402.250
122082-1/24.6254.0732.500
132122-3/45.0884.3492.750
142142-7/85.2444.4772.834
1530035.5504.7873.000

GT Series (mm)

Blank Size Size Code Nominal Stud Size OD H Max Stroke
02024M2446.9941.8525.40
03027M2752.8646.3028.58
04030M3058.7554.5131.75
05033M3364.6259.2834.93
06036M36/M3970.4963.1738.10
07042M42*76.3567.4641.28
08045M4582.2569.8544.45
09048M4888.1178.5947.63
10052M5293.9879.8850.80
11056M56105.7489.9257.15
12064M64117.48103.4563.50
13070M70129.24110.4669.85
14072M72133.20113.7271.98
15076M76140.97121.5976.20