Bolted Joint: Use of Spacer

[struclearner]

Dear Alls,

When a spacer is used in a bolted joint, some of the reasons of using it, are as follows,
- Increase the Bolt length, getting the benefit of less bolt stiffness and more stretch and pre load.
- Better Bolt and Joint members stiffness ratios.
Are there any others reasons/benefits of using a spacer in a bolted joint. Please refer to any article/book covering the bolted joint using spacer calculations.
Thanks.

 

[MintJulep]

To avoid having threads in a shear plane.

 

[btrueblood]

Spacers of insulating materials may help limit heat transfer through the bolts.

 

[kingnero]

Eliminating contact between different materials (e.g. galvanic corrosion issues)