Certified Hygienic
Nuts
Certified hygienic nuts with blue sealing are the right nuts to be used on all machinery in all certified hygienic wash-down environments. The sealing blocks out water and bacteria and prevents a non-hygienic metal-to-metal assembly. Round-headed and self-draining surfaces with a maximal roughness of 0.8 μm Ra.
The design of the nuts does not deviate from the sizes of current standard nuts. Therefore, wrench sizes, thread heights, etc. all remain the same making it very easy to upgrade and replace standard nuts.
NGI’s certified hygienic nuts are used for floor-mounting of certified hygienic levelling feet to ensure compliance with current legislation towards hygienic design.
The NDXH is used when the length of the exposed bolt thread can vary.