# NSN 1615-00-125-4120: Adapter, Tail Rotor

NSN 1615-00-125-4120 (also written 1615001254120; NIIN 00-125-4120) is an adapter, tail rotor in Federal Supply Class 1615, Helicopter Rotor Blades, Drive Mechanisms and Components. 2 manufacturer part numbers from 1 supplier are on record. It was last purchased in Aug 2026.

## Identification

- NSN: 1615-00-125-4120 (1615001254120)
- NIIN: 00-125-4120 (001254120)
- Item name: ADAPTER,TAIL ROTOR
- Federal Supply Class: [FSC 1615 Helicopter Rotor Blades, Drive Mechanisms and Components](https://nsnexplorer.com/fsc/1615/)
- Federal Supply Group: [FSG 16](https://nsnexplorer.com/group/16/)
- Acquisition method suffix code: AMSC P: the government does not own the rights to the data needed for more sources. (observed 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| AGAV | END ITEM IDENTIFICATION | BELL MODEL OH-58A AND OH-58C HELICOPTERS |
| TEXT | GENERAL CHARACTERISTICS ITEM DESCRIPTION | STEEL,MIL-S-6758 COND D1 OR MIL-S-5626 COND D1 OR MIL-S-5000 COND C4,CADMIUM-PLATED QQ-P-416 CLASS 3 TYPE 1,DIM.,1.250 IN. NOM O/A LG,5.874 IN. NOM FLANGE LG,1.438 IN. NOM FLANGE W,0.170 IN. NOM FLANGE THK,1.125 IN. NOM BODY OD,ID INVOLUTE SPLINE DATA,FLAT ROOT MAJOR DIA FIT,15 TEETH,16/32 DIAMETRAL PITCH,30.0 DEG PRESSURE ANGLE,0.9375 IN. PITCH DIA,0.8767 IN. MIN,0.8817 IN. MINOR DIA,1.0000 IN. MIN,1.0013 IN. MAX MAJOR DIA,FLANGE ID COUNTERBORED 1.160 IN. DIA BY 0.210 IN. DEEP,ONE MOUNTING HOLE DRILLED IN FLANGE 0.2512 IN. DIA 1.1719 IN. ABOVE AND BELOW HORIZONTAL CENTERLINE |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 206-040-328-003 | 97499 | BELL TEXTRON INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 206-040-328-3 | 97499 | BELL TEXTRON INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Price history

Newest first.

| Date | Unit price | Quantity | Supplier | Agency | Source |
| --- | --- | --- | --- | --- | --- |
| 2026-08-10 | $1,494.79 | 8 | 9FAE6 | — | [record](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=1615001254120) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-08-10 | [SPE4A626V300L](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=1615001254120) | ADAPTER, TAIL ROTOR | — | $11,958.32 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=1615001254120&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=1615001254120
- 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/1615-00-125-4120/
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