Rivet Nut

The rivet nut is a type of fastener that combines the advantages of threaded fasteners and classic hammer-set rivets. It allows metal sheets to be joined while creating a hole with a pre-cut thread at the attachment point. This makes it possible to create strong and reliable connections between various parts.

Rivet nuts are used for thin sheet materials where a hole with an internal thread is required. This fastener has become widely used in mechanical engineering.

Design features and materials

The design of the fastener includes 3 main elements: the head, the middle section and the back part. The head can have various configurations: flat, countersunk, reduced, or raised countersunk. The back part contains the internal thread, which is later used for installing fastening elements. Rivet nuts can be blind or through-hole: in the first case the lower end is closed, in the second the rivet nut has an opening.

Rivet nuts are made from carbon steel, and can also be made from aluminium or other non-ferrous alloys that are not subject to corrosion. They can also be made from high-strength steels with a property class from 8.8 to 12.9, used together with threaded fasteners of the same material.

To extend service life, rivet nuts can be fitted with various types of anti-corrosion coatings. They are coated with a thin layer of zinc, nickel or chromium, while non-ferrous metals provide resistance to external corrosive effects. As a result, the product can withstand prolonged contact with an aggressive environment. Rivet nuts with a protective coating also have improved decorative qualities.

Installation features

Installing a rivet nut requires access to the connection point from only one side, as with other types of rivets. Installation is carried out in several stages:

• A hole of the required diameter is pre-drilled in the thin sheet metal.
• If a rivet nut with a countersunk head, recessed into the material, needs to be installed, countersinking is additionally performed.
• The rivet nut is screwed onto a special tool and placed into the hole.
• Using the tool, the rivet nut is deformed and pressed against the sides of the hole, after which the tool is removed. This results in a strong, permanent connection with an additional threaded hole.

This type of fastener is used for joining parts of various thicknesses. When selecting, attention should be paid to parameters such as the shank length and thread diameter of the rivet nut, the material, the head design, and any additional features of the fastener. The wide range of products makes it possible to select a suitable option for any task.

Application possibilities for the fastener

Rivet nuts have become widely used in various areas of industrial production. They are used in mechanical engineering, automotive assembly, machine tool manufacturing, special equipment, equipment production, and more. This type of fastener makes it possible to join parts made of thin sheet metal, create a threaded hole of the required diameter, and avoid the use of welding. Rivet nuts combine the advantages of several types of fasteners, giving them broad application possibilities.

One of the advantages is the ability to install such fasteners in places accessible from only one side. Installation is carried out using a special riveting tool, and one person can easily handle the installation. This type of fastener speeds up assembly work, which is why it has become in demand in serial industrial production.

Rivet nuts can be used not only for joining metal sheets, but also for connecting various parts made of plastic, hardboard and other materials. This expands the possibilities for their use in industry, construction and finishing work.

Ordering products from FLOK

FLOK supplies products in small or large wholesale quantities, with fast shipping possible even for large volumes. Products are shipped to any region of Russia.

To place an order, select the appropriate product type; if needed, consult FLOK specialists for help choosing fasteners.

D	d1	d2	d3	h	L1	L	K	Material thickness		Do
								min.	max.
M3	4.9 -0.05	7 ±0.2	4 +0.05	0.8 +0.1	4.0 ±0.1	9 ±0.2	0.8	0.5	2.0	5
						11 ±0.2		2.0	3.0
M4	5.9 -0.05	9 ±0.3	5 +0.05	0.8 +0.1	5.5 ±0.1	11 ±0.3	0.8	0.5	2.0	6
						13 ±0.3		2.0	4.0
M5	6.9 -0.1	10 ±0.3	5.8 +0.1	1 +0.1	6.2 ±0.2	13 ±0.3	1	0.5	2.5	7
						15 ±0.3		2.5	4.0
M6	8.9 -0.1	13 ±0.3	7.8 +0.1	1.5 +0.1	7.0 ±0.2	15 ±0.3	1.5	0.5	3.0	9
						17 ±0.3		3.0	5.0
M8	10.9 -0.1	15 ±0.3	9.5 +0.1	1.5 +0.1	7.5 ±0.3	17 ±0.3	1.5	0.5	3.0	11
						19 ±0.3		3.0	5.0
M10	11.9 -0.1	16 ±0.3	11 +0.1	2 +0.1	10 ±0.3	19 ±0.3	1.7	1.0	3.0	12
						21 ±0.3		3.0	6.0
M12	14.9 -0.1	20 ±0.3	13 +0.1	2 +0.1	12 ±0.3	22 ±0.3	1.9	1.0	4.0	15