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NTN lock nuts retain components mounted on a shaft. Identification starts with the thread and continues with the face that applies adjustment to the assembly. They are not selected as general-purpose nuts: the relationship with the bearing, sleeve and locking element determines the reference for the position. This page covers nuts; washers and sleeves have their own catalog entries.
See all NTN bushings and sleeves references →NTN guide →Lock nuts from all brands →NTN adapter sleeves →NTN lock washers →
AN/22, AN/28 and ANL24 illustrate two NTN designation structures. AN is followed by a slash and numeric block in the first examples, while ANL24 joins the ANL letters directly to the number. Keep this spelling when requesting a replacement. The number alone does not establish thread pitch, measured diameter or the associated bearing. A partial marking can guide the search, but measurements and the component receiving the nut are needed to confirm the reference.
For a transmission position, document whether the nut threads onto the shaft or a sleeve, which surface is beside it and how it is locked after adjustment. This distinguishes the nut's role from the washer's role. It also helps review tool access and clearance to neighboring parts. Do not infer a mounting procedure from the code: bearing adjustment and retention belong to the machine's complete design.
Prepare the NTN code, documented thread diameter and pitch, width, outside diameter, photographs and application. Include an image of the driving slots or faces and the accompanying locking element. These details let MR Accesorios Industriales define the requested part. Clarify whether only the nut is required or related accessories also need identification, and give the quantity for each item.
That dimension confirms neither the thread nor the seating face. Compare the geometry that actually connects the parts.
No. It is a separate component; send its marking or photograph for individual identification.
Attach photographs and shaft or sleeve information. Measurements taken on a damaged area need comparison with assembly documentation.
Can't find the exact model? Write to us with the part number or model you're looking for: we'll find it and quote it, even if it's not listed in the catalog.
The NTN AN series lock nut is an axial fastening component used to secure bearings and other elements to the shaft. It is used together with a lock washer to prevent loosening due to vibration. It is a key part in mounting and dismounting bearings in industrial equipment, and MR Accesorios Industriales sells it in Buenos Aires, Argentina.
The NTN ANL series lock nut is a precision component used to secure bearings and other elements on threaded shafts. Its design allows a firm and secure fit, facilitating assembly and disassembly in industrial applications. It is a key part in assemblies where axial position must be reliably maintained, and its correct selection ensures long-term system operation.
Just the manufacturer part number is enough: we will quote it and provide dimensions and equivalents via WhatsApp or email.
