tubeless rim , nut specification



 in the sip tubeless rim i have found 2 different nut.

i can't understand if with the first one i have to use plane and glover washer, and with the second one no washer.... or i have to use it with both model of nut?



first model with washer



second model without washers





no one ?!?!?!?!?!?!?!!?