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Tower Assembly Bolts & Nut


Tower Assembly bolts are one of the most important components in the wind mill and wind turbine. Proper torque tensioning is required to clamp the bolts and nuts.

It is a requirement of EN 14399-4 that the bolts & nuts & washers must be supplied by one manufacturer who is responsibe for the complete bolt assembly. Generally all bolts used in tower assembly are manufactured and tested in our own factory before dispatch. The below table will give you an example of our capabilities.

ALLOY STEEL
Standard Dimension Description Diameter Length Finish Material Grade
EN 14399-4 10.9 HV Bolts

Bolts & Nuts

M‐30 to M‐72 100 ‐1000mm HDG,PTFE,
Dacromet,geomet,
Magni delta
40 Cr, 4140,
42crMov4,
10.9 grade
DIN 6914 / DIN 6915

Bolts & Nuts

M‐30 to M‐72 100 ‐1000mm HDG,PTFE,
Dacromet,geomet,
Magni delta
40 Cr, 4140,
42crMov4,
10.9 grade
DASt Guidelines
021

Bolts & Nuts

M‐30 to M‐72 100 ‐1000mm HDG,PTFE,
Dacromet,geomet,
Magni delta
40 Cr, 4140,
42crMov4,
10.9 grade

Bigboltnut manufactures HV bolts & nuts in 10.9 grade using high quality alloy and carbon steel material for wind farms and wind energy sector, our bolts and nuts are used extensively in the on shore and off shore areas in the wind energy sector in India, Europe and USA. Wind energy is the most popular form of renewable source of energy and does not pollute the environment like other sources do.

Wind Turbine Bolts for Tower Joints | High Tensile Bolts for Tower | Bolts For Wind Mill Assembly