# NSN 1615-00-757-4857: Lockplate, Main Rotor

NSN 1615-00-757-4857 (also written 1615007574857; NIIN 00-757-4857) is a lockplate, main rotor in Federal Supply Class 1615, Helicopter Rotor Blades, Drive Mechanisms and Components. 3 manufacturer part numbers from 2 suppliers are on record. It was last purchased in Sep 2026.

## Identification

- NSN: 1615-00-757-4857 (1615007574857)
- NIIN: 00-757-4857 (007574857)
- Item name: LOCKPLATE,MAIN 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 C: needs engineering source approval; other sources must qualify first. (observed 2026-10-10)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| TEXT | GENERAL CHARACTERISTICS ITEM DESCRIPTION | STEEL,CORROSION RESISTING QQ-S-765 CLASS 416 TYPE A OR AMS5613 COMP 410,PASSIVATED BPS FW4007,DIM.,4.3945 IN.NOM OD,3.600 IN. NOM ID,0.375 IN. NOM W,OD INVOLUTE SPLINE DATA,FLAT ROOT SPLINE CLASS 1 FIT,52 TEETH,12/24 DIAMETRAL PITCH,30.0 DEG PRESSURE ANGLE,4.3333 IN. PITCH DIA,4.216 IN. MIN,4.229 IN. MAX MINOR DIA,4.3910 IN. MIN,4.3960IN. MAX MAJOR DIA,ONE HOLE 0.173 IN. DIA DRILLED THRU SIDE AT 165 AND 195.0 DEG ON 4.010 IN. DIA BOLT CIRCLE |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 204-012-113-003 | 97499 | BELL TEXTRON INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 204-012-113-3 | 80070 | LOCKHEED MARTIN CORPORATION DBA LOCKHEED MARTIN ROTARY AND MISSION SYSTEMS DIV RMS- MIC2 | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 204-012-113-3 | 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 |
| --- | --- | --- | --- | --- | --- |
| 2026-09-24 | $220.0656 | 503 | 4AGF5 | — | [record](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=1615007574857) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-09-24 | [SPE4A626P0R13](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=1615007574857) | LOCKPLATE, MAIN ROTOR | — | $110,693.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=1615007574857&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=1615007574857
- 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/1615-00-757-4857/
JSON: https://nsnexplorer.com/api/nsn/1615-00-757-4857.json