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## Weight rating of threaded hanger rods.

Nominal Rod Diameter
(in)
(in2)
lbkg
3/8 0.07 600 270
1/2 0.13 1100 500
5/8 0.20 1800 820
3/4 0.30 2700 1220
7/8 0.42 3800 1720
1 0.55 4900 2220
1 1/8 0.69 6200 2810
1 1/4 0.89 8000 3630
1 1/2 1.29 11600 5260
1 3/4 1.74 14700 6670
2 2.30 20700 9390
2 1/4 3.02 27200 12340
2 1/2 3.72 33500 15200
3 5.62 50600 22960
3 1/4 6.72 60500 27440
3 1/2 7.92 71300 32340
4 10.6 95400 43270
4 1/2 13.7 123000 55780
5 17.2 154000 69900

1) The maximum loads in the table above are based on allowable tensile stress of 12 kpsi - reduced by 25% to 9 kpsi allowable stress.

Note that hangers supporting steam, water, air or gas piping systems should be able to carry the weight of piping, insulation, valves and other equipment - and water for hydrostatic pressure testing - without exceeding 80% of the supporting hangers yield strength (not exceeding 16 kpsi for steel of unknown properties)

### Recommended Rod Sizes

Recommended rod sizes for individual pipes:

Recommended Rod Sizes
Pipe Size
(in)
Rod Size
(in)
< 2 3/8
2 1/2 - 3 1/2 1/2
4 - 5 5/8
6 3/4
8 - 12 7/8
14 - 16 1
18 1 1/8
20 1 1/4
24 1 1/2

Rod diameter less than 3⁄8 in (12 mm) is not recommended as support.

## Related Topics

• ### Dimensions of Pipes and Tubes

Pipe, tube and fittings sizes and dimensions. Inside and outside diameters, weights and more.

## Related Documents

• ### Bolt Torque Calculator

Calculate required bolt torque.
• ### Hooke's Law

Hooke's law - force, elongation and spring constant.
• ### Horizontal Pipe Hanger Supports - Spacing and Rod Size

Recommended maximum support span between hangers - and rod sizes for straight horizontal pipes.
• ### ISO 724 - Metric Threads

Dimensions of metric threads according ISO 724.
• ### Metric Bolts - Minimum Ultimate Tensile and Proof Loads

Minimum ultimate tensile and proof loads for metric bolts with coarse or fine threads.
• ### Metric Bolts - Tightening Torques

Recommended thightening torque metric bolts.
• ### Mild Steel - Round Bars Weight

Weight of round bars.

• ### Steels - Endurance Limits and Fatigue Stress

Endurance limits and fatigue stress for steels.
• ### Stress, Strain and Young's Modulus

Stress is force per unit area - strain is the deformation of a solid due to stress.

• ### Weight of Beams - Stress and Strain

Stress and deformation of vertical beams due to own weight.
• ### Young's Modulus, Tensile Strength and Yield Strength Values for some Materials

Young's Modulus (or Tensile Modulus alt. Modulus of Elasticity) and Ultimate Tensile Strength and Yield Strength for materials like steel, glass, wood and many more.

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## Citation

• The Engineering ToolBox (2008). Threaded Rods - Loads in Imperial Units. [online] Available at: https://www.engineeringtoolbox.com/loads-hanging-rods-d_1341.html [Accessed Day Month Year].

Modify the access date according your visit.

7.25.9

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