Part Number
Sleeve Bearing · Federal specification · NSN 3120-00-224-8955
| Part number | QQ-C-390 |
|---|---|
| Specification family | Federal specification |
| Item name | Sleeve Bearing |
| Unit of issue | EA |
| Cross-referenced NSN | 3120-00-224-8955 |
| Federal Supply Class (FSC) | 3120 — Bearings, Plain, Unmounted |
| Unit price (USD) | $245.33 |
| Country of origin | Türkiye (Turkey) |
| Lead time | Within 90 days of order |
| Minimum order | May apply — confirm on quote |
| Documentation | Source documentation provided on all orders |
Characteristics decoded from the federal cataloging record for this sleeve bearing. Confirm controlling dimensions against your drawing or standard sheet before ordering.
| Material | Copper Alloy 955 Overall |
|---|---|
| Overall Length | 0.6880 Inches Nominal |
Plain (journal/sleeve) bearings, bushings, and bearing inserts that support loads through a sliding rather than rolling interface.
Reading the part number. QQ-C-390 is a federal specification reference (the QQ series covered specific commodity groups in the old federal spec system). Like all spec citations it describes a family of conforming items; the NSN on this page identifies the specific sleeve bearing stocked.
Price in context. Across the 67 items we currently stock in FSC 3120 (Bearings, Plain, Unmounted), published unit prices run from $3.85 to $6,750.00. At $245.33, this item sits well above the class median of $87.61 — typical of assemblies and higher-value line items in this class.
Stock activity. This item has appeared once in our supplier stock feed, most recently listed 2026-08-12, with a lot quantity of 3 units. Listing activity is a practical signal of ongoing availability; confirm current stock and firm pricing on your quote.
Who orders QQ-C-390. Aircraft owners and MRO shops replacing standard hardware, machine shops and OEMs filling a bill of materials, and government contractors sourcing against NSN 3120-00-224-8955. You can order by part number or by stock number — it is the same item, the same published price, and the same quote form.
Applicable standards. SAE and MIL bearing standards; bronze, composite, and lined bearings.
Need this part modified, or a similar part made to your print? See our U.S.-based CNC machining services and aerospace machining capability.
Country of origin: Türkiye (Turkey). Turkey is a NATO ally and a normal-trade-relations partner of the United States, and Turkish-origin end items are eligible for a wide range of U.S. federal and DLA procurements.
TAA note: Turkey is not a Trade Agreements Act (TAA) designated country, so these items are generally not eligible for TAA-covered solicitations. They are offerable under the Buy American Act and many non-TAA DLA buys. Buyers are responsible for confirming the origin requirements of their specific solicitation.
Full country-of-origin and source documentation is provided with every order. Fulfillment within 90 days of order. Minimum order may apply.
Items are supplied as stock mil-spec / commercial hardware with source documentation and country-of-origin paperwork on every order. Parts are not supplied with an FAA Form 8130-3 airworthiness tag unless expressly stated on the quote. Buyers installing hardware on certificated aircraft are responsible for acceptance under their own maintenance program, repair station procedures, or owner/operator authority.
NSN 3120-00-287-7948
NSN 3120-00-293-4481
NSN 3120-00-321-9243
NSN 3120-00-445-9635
NSN 3120-00-447-7349
NSN 3120-00-447-7388
NSN 3120-00-460-1543
NSN 3120-00-469-5374
NSN 3120-00-800-9471
NSN 3120-00-837-4306
NSN 3120-00-847-0373
NSN 3120-00-867-9003
