How to Search AVBOX US by Aircraft Part Number
Searching by aircraft part number is usually the fastest way to find aviation hardware, aircraft parts, avionics, electrical components, and specialized tools on AVBOX US. This guide explains how to search, which details matter, and what to review before ordering.
Search the AVBOX US Product Catalog
Start with the complete part number exactly as shown. If no result appears, try the same number without dashes or spaces, then search the base number.
Start with the Exact Part Number
If you already have a part number from a manual, illustrated parts catalog, purchase order, maintenance record, packaging label, or previous invoice, search that exact number first.
Aircraft part numbers can be sensitive to dashes, suffixes, prefixes, spaces, and alternate formats. If the first search does not find what you need, try the common variations below before giving up.
Important Search Reminder
Search results are a starting point. Customers are responsible for confirming the exact part number, condition, quantity, documentation, unit of sale, and suitability before ordering.
- Confirm the complete part number before purchase.
- Review dashes, suffixes, revisions, and alternate numbers carefully.
- Check the product condition, photographs, and documentation notes.
- Use applicable manuals, approved records, or internal requirements to verify suitability.
How to Search More Effectively
If the exact search does not immediately show the item you need, try the same number in several common formats.
Search Exact
Enter the complete part number exactly as shown, including letters, dashes, spaces, and suffixes.
Remove Dashes
If nothing appears, search the same part number again without dashes or spaces.
Use the Base Number
Try the main part number without final suffixes, revision codes, or packaging identifiers.
Review Alternates
Check listings for alternate, superseded, related, or cross-reference part numbers.
Part Number Details to Watch
A small difference can identify a different size, configuration, material, finish, or revision.
- Dashes and spaces
- Prefix letters
- Suffix letters or numbers
- Revision or dash number
- Alternate part numbers
- Unit of sale and quantity
Where Part Numbers May Come From
The source of the number can help determine what else should be verified before ordering.
- Illustrated parts catalog
- Maintenance or repair manual
- Previous purchase order
- Packaging or bag label
- Part marking or identification tag
- Previous invoice or inventory record
| Search Method | How to Use It | Customer Reminder |
|---|---|---|
| Exact Part Number | Search the full number exactly as shown in the manual, label, or record. | This is the best starting point when the complete number is known. |
| Without Dashes | Search the same number with dashes and spaces removed. | Different suppliers and records may format the same number differently. |
| Base Number | Search the main number without the final suffix, revision, or dash code. | This may reveal related versions, alternates, or nearby product families. |
| Standard Prefix | Search common aviation standard families such as AN, MS, NAS, NASM, BAC, or AS. | Always verify the complete number, size, material, finish, and configuration. |
| Keyword + Number | Search the product type with part of the number, such as bolt, rivet, seal, clamp, or fitting. | This can help when the part number has multiple formats or related references. |
Searching Standard Hardware Numbers
Aircraft hardware may use standard prefixes such as AN, MS, NAS, NASM, BAC, or AS. These prefixes identify a standard family, but they do not replace the complete part number.
Before ordering standard hardware, review the listing for size, material, finish, thread, length, grip, quantity, condition, and documentation notes.
Do Not Rely on the Prefix Alone
A prefix such as AN, MS, NAS, BAC, or AS is only the beginning. The full number and product details determine what you are actually ordering.
- Confirm the complete part number.
- Review suffixes and dash numbers.
- Check material, finish, dimensions, and product type.
- Confirm the quantity and unit of sale.
Alternate Part Numbers
Some listings may include alternate, related, superseded, or cross-reference numbers. These references can help, but customers should verify whether an alternate is acceptable for the intended application.
- Review the listed primary part number.
- Check alternate part-number notes.
- Confirm compatibility using applicable records.
- Contact AVBOX US when the alternate is critical.
Condition and Documentation
Finding the correct number is only one part of the order. Product condition and included documentation should also be reviewed.
- New, New Surplus, New Stock, or other condition
- Company CoC or Manufacturer CoC notes
- Trace, tag, release, or certificate notes
- Photos of labels, packaging, and markings
What to Check Before Ordering
- Exact part number: Verify dashes, spaces, suffixes, prefixes, and revisions.
- Alternate numbers: Confirm whether the listed alternate is acceptable for your use.
- Product type: Verify whether the listing is for a bolt, nut, rivet, seal, fitting, tool, or another product.
- Condition: Review the stated condition and any related documentation notes.
- Photos: Check labels, packaging, part markings, and included items.
- Quantity: Confirm the quantity and unit of sale being purchased.
- Application: Verify suitability using applicable manuals, illustrated parts catalogs, or approved records.
Need Help Finding a Part Number?
Contact AVBOX US before ordering when the part number, alternate, condition, documentation, or application is critical to your purchase.

MS21122-12 - CLAMP, LOOP