Wheel stud M12x1.25x41 2121, 21213, 2131, 21214, 2123 rear

Cars admin26.02.2020

For the Niva model, the wheel is attached to the hub using wheel nuts. The number of fasteners depends on the year of manufacture of the model and is presented in the table below.

General fastener dimensions:

• number of fasteners: 5 (pcs);
• fastener size: M12x1.25 (mm);
• diameter between fasteners (PCD): 139.7 (mm).

Important: the data presented above are the limits for all vehicle modifications. Specific numbers depend on the year of manufacture.

Rules for selecting wheel fasteners:

It should be taken into account that different wheel fasteners are often used for cast and stamped wheels.

First of all, this concerns the length of the bolts, because... The thickness of different types of discs can vary significantly.

When selecting any fastener, special attention should be paid to the thread pitch. This parameter is always indicated in the marking after the x sign.

For example: the designation M12x1.5 corresponds to a thread with a nominal diameter of 12 (mm) and a thread pitch of 1.5 (mm).

Thread M14 x 1.5 means:

M14 – thread diameter 14 (mm); 1.5 — thread pitch (distance between adjacent threads).

To fasten wheels or disks, 2 main types of fasteners are used:

- wheel bolts; -wheel nuts.

Thread M14 x 1.5 means:

M14 – thread diameter 14 (mm); 1.5 — thread pitch (distance between adjacent threads).

The diameter of the circle on which the mounting holes for Chevrolet Niva are located.

1. The distance between the vertical plane of symmetry of the wheel and the plane of application of the disk to the hub.

Caution: the above data are the official figures of the manufacturer, however, please note that the information is for reference only and does not guarantee absolute accuracy.

Nuts for alloy wheels Niva Chevrolet

The fact that the wheel nuts are a special product is evidenced by a non-standard metric thread with a diameter of 12 mm with a pitch of 1.25 mm.
Standard coils of the same diameter have a different pitch, 1.75 mm. That is, the wheel threads are made smaller in order to increase the reliability of the connection and implement the “self-tightening” effect due to constant rotation. Larger coils will not work here. The factory nuts are sized so that when the thick stamped steel wheel is tightened, they will fit completely onto the stud. In this case, the element is equipped with a cone at the end, adjacent to the mating part on the disk. Due to the cone-shaped connection, 2 problems are solved:

• self-centering of the hole in the disk opposite the stud when the nuts are evenly tightened;
• more reliable connection of the wheel plane with the hub.

The pin, which carries the load of the entire fastening, is pressed into the hub on splines with an interference fit, and it is sometimes very difficult to knock it out. This is another reason to take the selection of parts for this unit seriously. All nuts available for sale for Niva can be divided into 2 types:

1. Open, the pin passes through them when twisted. The car is equipped with such parts at the manufacturer.
2. Closed, with a blind hole. Installed on Chevrolet Niva, but the size is also suitable for VAZ-21213.

Factory elements are manufactured with a size for a 19 mm wheel wrench. Various parts found in stores can be made with a 21 mm turnkey, and reach a height of 30 mm or more. The standard length of the open VAZ-2121 nut, made of uncoated carbon steel, is 17 mm. The new decorative parts have a nickel plated finish and a different protruding head shape.

2014-08-22

Wheel nuts-2

A short continuation about wheel nuts (see about the difference between nuts for casting and stamping).

A budget option for M12x1.25 wheel nuts are nuts from Niva. Here are two options:

On the left in the photo is a nut from a classic Niva. This is a stamping nut only, not recommended for use with alloy wheels. But on the right is a nut from a Chevrolet Niva. This nut can be used with alloy wheels.

These nuts will also fit the Jimny. Comparison with the original Dzhimnikov nut:

If you suddenly need nuts urgently, and there is an option only for the Sh. Niva, then you can take that too.

3 comments:

I saw the shiny one in the store, the one on the left in the last photo. At least it looks similar. The price is 45 rubles, if I'm not mistaken. Turnkey “for 17” and “for 19”. Actually, this is what I use (both casting and stamping). I have never used the one on the left in the first photo, although it could have happened.

Original Japanese nuts are good, but expensive. And cheap Chinese ones look beautiful, but they can be made from wild “raw meat”. I myself saw how chips were easily removed from such nuts when tightened with stamping (Dotz). :-/ “Shnivovskie” are not ideal, but, in principle, they will do as a last resort at their low price (I recently bought them for 35 rubles apiece). But, of course, you need to take into account the thread (M12x1.25 is not used everywhere).

“The shavings were removed” is, of course, complete chaos. These will go straight to the ferrous metal (if accepted ;-)). But the thread of the studs will not be damaged by the “silumin”.