# NSN 3110-01-503-0388: Bearing, Roller, Track Roller

NSN 3110-01-503-0388 (also written 3110015030388; NIIN 01-503-0388) is a bearing, roller, track roller in Federal Supply Class 3110, Bearings, Antifriction, Unmounted. 5 manufacturer part numbers from 4 suppliers are on record. It was last purchased in Aug 2026.

## Identification

- NSN: 3110-01-503-0388 (3110015030388)
- NIIN: 01-503-0388 (015030388)
- Item name: BEARING,ROLLER,TRACK ROLLER
- Federal Supply Class: [FSC 3110 Bearings, Antifriction, Unmounted](https://nsnexplorer.com/fsc/3110/)
- Federal Supply Group: [FSG 31](https://nsnexplorer.com/group/31/)
- Acquisition method suffix code: AMSC B: must be bought from the sources named on a source control or selected item drawing. (observed 2026-10-28)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AGVU | INNER RING WIDTH | INCHES MINIMUM 0.6775 AND INCHES MAXIMUM 0.6925 |
| AGVT | OUTER RING WIDTH | INCHES MINIMUM 0.6200 AND INCHES MAXIMUM 0.6250 |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ROLLER FED SPEC SINGLE TREATMENT RESPONSE QQ-C-320 |
| ABXV | BORE DIAMETER | INCHES MINIMUM 0.3121 AND INCHES MAXIMUM 0.3127 |
| SFTT | SURFACE TREATMENT | OUTER RING SIDES CHROMATE |
| SFTT | SURFACE TREATMENT | OVERALL CADMIUM |
| SFTT | SURFACE TREATMENT | ROLLER CHROMATE |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OUTER RING SIDES FED SPEC SINGLE TREATMENT RESPONSE QQ-C-320 |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | OVERALL FED SPEC SINGLE TREATMENT RESPONSE QQ--416 |
| ADGA | OVERALL OUTSIDE DIAMETER | INCHES MINIMUM 1.1260 AND INCHES MAXIMUM 1.1270 |
| ZZZK | SPECIFICATION/STANDARD DATA | GOVERNMENT SPECIFICATION 78286--IL-B-3990 |
| STYL | STYLE DESIGNATOR | — |
| LMDC | LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATION | MIL SPEC SINGLE MATERIAL RESPONSE -IL-G-81322 |
| MATT | MATERIAL | OVERALL STEEL COMP E52100 |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | OVERALL ASSN STD SINGLE MATERIAL RESPONSE A-S-6440 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 38950-00909 | 78286 | SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 38950-00909-102 | 3NPS1 | RBC AIRCRAFT PRODUCTS, INC. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 38950-00909-102 | 73134 | ROLLER BEARING COMPANY OF AMERICA, INC. | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 38950-00909-102 | 78286 | SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 38950-00909-102 | 92563 | MCGILL MANUFACTURING CO, INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-08-27 | [SPE4A626PX567](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=3110015030388) | BEARING, ROLLER, TRACK ROLLER | JAMAICA BEARINGS CO., INC. DBA JAMAICA BEARINGS CO., INC. | $36,549.20 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=3110015030388&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=3110015030388
- 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/3110-01-503-0388/
JSON: https://nsnexplorer.com/api/nsn/3110-01-503-0388.json