A nut is a hollow part, which is threaded internally and is used to attach to a screw in a threaded joint in a fixed or sliding way. It is used to hold and fix joints of removable elements.
KEY FEATURES OF NUTS:
1- Number of faces: The most common is to have 6 or 4 faces (hexagonal or square nut)
2- Thickness: Nut length
3- Diameter: It has to be the same as the screw
4- Thread Type: Thread Profile
TYPES OF NUTS
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USE |
STANDARDS |
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DIN |
UNITES |
UNE-EN |
UNE-EN ISO |
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Hex nut |
Screwed with great tightening. Most used |
431, 555, 934, 6915 |
4032, 4033, 4034, 8673, 8674 |
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Recessed hex nut |
Helps the hex nut to immobilize it |
936 |
4035, 8675 |
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High hex nut |
It is used when the nut has to be less resistant than the screw |
6330, 6334, 30389 |
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Flat-ended hex nut |
Ideal for small diameter screws |
431, 439 |
4036 |
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Hex nut with flange |
As you have the flange, there is no need to use a support washer |
6331 |
1661 |
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Hex nut with flange and self-locking |
It has a vulcanized hard fiber washer and thanks to it there is no need to use a support washer |
1663, 1664, 1666, 1667 |
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Hex nut with ball seat |
Ideal for when the support face is oblique in relation to the screw shaft. |
6330 |
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Crimped Hex Nut |
Allows to accommodate a fin pin |
533, 534, 935, 937 |
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Eyebolt nut |
Handling of machinery and tooling |
582 |
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Lock nut |
Used as a lock nut |
7967 |
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Hex nut with shoulder |
Once the nut has been tightened with the help of some protrusions that are incorporated into one of its ends, it is embedded in the material of the piece to be fixed, ensuring the immobilization of the nut |
929 |
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Self-locking nut |
Once the nut has been tightened with the help of a washer, immobilization is ensured |
380, 382, 385 |
2320, 7040, 7042, 7719, 10511, 10512, 10513 |
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Knurled nut |
Frequent manual housings and tightening, allowing them to be immobilized with the help of a prisoner or a pin |
466, 467, 6303 |
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Tuerca lobular |
Frequent manual housings and tightening, allowing them to be immobilized with the help of a prisoner or a pin |
6335 |
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Wing nut |
Frequent housings and manual tightening |
313, 315 |
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Nut with crossbar |
Frequent manual housings and tightening, allowing them to be immobilized with the help of a prisoner or a pin |
6305, 6307 |
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Crank nut |
Frequent housings and manual tightening |
99 |
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Ball nut |
Frequent housings and manual tightening |
319 |
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Tuerca de sombrerete |
Prevents the end of the screw stem from coming out, preventing deterioration of the screw |
917, 986, 1587 |
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Self-locking cap nut |
It ensures the immobilization of the nut thanks to a vulcanized hard fiber washer that is incorporated. |
986 |
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Square Nut |
Allows frequent high-tightening mounts and dismounts |
557, 562, 798, 928 |
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Octagonal nut |
Tight-free bolted joints (Electrical, electronics, precision mechanisms) |
431 |
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Mortison nut |
Tight-free bolted joints (Electrical, electronics, precision mechanisms) |
546 |
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Slotted nut |
Fastening of parts, mounted on shafts, and to be fixed and secured axially (shaft: bearings) |
1804 |
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Hole nut |
Tight-free bolted joints (Electrical, electronics, precision mechanisms) |
547, 548, 1816 |
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