# NSN 3120-01-318-1729: Bearing, Plain, Self-Aligning

NSN 3120-01-318-1729 (also written 3120013181729; NIIN 01-318-1729) is a bearing, plain, self-aligning in Federal Supply Class 3120, Bearings, Plain, Unmounted. 1 manufacturer part number from 1 supplier is on record. It was last purchased in Oct 2026.

## Identification

- NSN: 3120-01-318-1729 (3120013181729)
- NIIN: 01-318-1729 (013181729)
- Item name: BEARING,PLAIN,SELF-ALIGNING
- Federal Supply Class: [FSC 3120 Bearings, Plain, Unmounted](https://nsnexplorer.com/fsc/3120/)
- Federal Supply Group: [FSG 31](https://nsnexplorer.com/group/31/)
- Acquisition method suffix code: AMSC R: the government owns neither the data nor the rights, and obtaining them is judged uneconomical. (observed 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| ABXV | BORE DIAMETER | INCHES MINIMUM 1.7492 AND INCHES MAXIMUM 1.7500 |
| AGGF | OUTER MEMBER OUTSIDE DIAMETER | INCHES MINIMUM 3.0590 AND INCHES MAXIMUM 3.0600 |
| AGGH | OUTER MEMBER WIDTH | INCHES MINIMUM 1.3120 AND INCHES MAXIMUM 1.3220 |
| AGGJ | INNER MEMBER WIDTH | INCHES MINIMUM 1.8070 AND INCHES MAXIMUM 1.8120 |
| AGKP | STATIC RADIAL LOAD RATING | POUNDS 380000 |
| CTLM | LUBRICATION FEATURE | OUTER RACE MEMBER GROOVE AND PERFORATION |
| FEAT | SPECIAL FEATURES | OVERSIZE O.D. VERSION OF KWB28-20SGA; USED ON LINK,PIN GUDGEON OF MAINLANDING GEAR OF C5 A/B |
| MATT | MATERIAL | LUBRICATION OIL LUBRICATING |
| MATT | MATERIAL | INNER MEMBER STEEL COMP E52100 |
| MATT | MATERIAL | OUTER RACE MEMBER STEEL COMP 4130 |
| SFTT | SURFACE TREATMENT | OUTER RACE MEMBER CADMIUM |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OUTER RACE MEMBER FED SPEC SINGLE TREATMENT RESPONSE QQ--416 |
| STYL | STYLE DESIGNATOR | — |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| KWB28-18 | 97613 | SARGENT AEROSPACE & DEFENSE, LLC DBA KAHR BEARINGS | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-10-06 | [SPE4A627P1084](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=3120013181729) | BEARING, PLAIN, SELF- | AVIARMS SUPPORT CORP | $17,780.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=3120013181729&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=3120013181729
- AMSC record: https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/
- USAspending contract actions (each award above links to its record)
- All data is public U.S. government data; every row above links to its source record where one exists.

Canonical page: https://nsnexplorer.com/nsn/3120-01-318-1729/
JSON: https://nsnexplorer.com/api/nsn/3120-01-318-1729.json