![[Translate to English:] einschiebbare Muttern](https://www.nosta.com/fileadmin/user_upload/Produkte/Connect/Montage-Symbolerklaerung/Montagetechnik_Grafik_C-einschiebbare-Muttern.jpg)
Push-in nuts for T-slots
cannot be added subsequently to profiles that are closed at the end.
The nuts for T-slots must be pushed in from the end of the groove.
![[Translate to English:] Einschwenkbare Muttern für T-Nuten](https://www.nosta.com/fileadmin/user_upload/Produkte/Connect/Montage-Symbolerklaerung/Montagetechnik_Grafik_F-einschwenkbare-Muttern.jpg)
Swing-in nuts for T-slots
can be inserted in the groove anywhere required. This is optimal for assemblies on existing constructions. Rhombus and T-head nuts have this property. This also applies to T-head bolts. Insertion aids are useful for this type of nuts for T-slots, e.g. slot in the slot nut, thread with pitch error, marking or plastic follower in the thread.
![[Translate to English:] Einschwenkbare Muttern für T-Nuten](https://www.nosta.com/fileadmin/user_upload/Produkte/Connect/Montage-Symbolerklaerung/Montagetechnik_Grafik_E-eindrehbare-Muttern.jpg)
Screw-in nuts for T-slots
can be inserted in the groove anywhere required. This is optimal for assemblies on existing constructions. Rhombus and T-head nuts have this property. This also applies to T-head bolts. Insertion aids are useful for this type of nuts for T-slots, e.g. slot in the slot nut, thread with pitch error, marking or plastic follower in the thread.
![[Translate to English:] Muttern ohne Steg für T-Nuten](https://www.nosta.com/fileadmin/user_upload/Produkte/Connect/Montage-Symbolerklaerung/Montagetechnik_Grafik_B-Muttern-ohne-Steg-fuer-T-Nuten.jpg)
Nuts without flange for T-slots
generally result in greater positioning tolerance for the thread hole. This depends on the difference between the dimension b of the width of the slot nut and dimension B of the slot base width of the mounting rail.
This symbol indicates the slot base width B in the mounting rail (C-rail).
![[Translate to English:] Muttern mit Steg für T-Nuten](https://www.nosta.com/fileadmin/user_upload/Produkte/Connect/Montage-Symbolerklaerung/Montagetechnik_Grafik_A-Muttern-mit-Steg-fuer-T-Nuten.jpg)
Nuts with flange for T-slots
The flange width (dimension a) of this nut for T-slots is chosen so that sufficient clearance remains between the slot nut and the groove, dimension A. Dimension a is chosen so that a sufficiently precise positioning tolerance results for the thread hole.
This symbol indicates the groove width A.