# NSN 1615-00-439-5598: Spacer Assembly, Splined

NSN 1615-00-439-5598 (also written 1615004395598; NIIN 00-439-5598) is a spacer assembly, splined in Federal Supply Class 1615, Helicopter Rotor Blades, Drive Mechanisms and Components. 4 manufacturer part numbers from 3 suppliers are on record. It was last purchased in Aug 2026.

## Identification

- NSN: 1615-00-439-5598 (1615004395598)
- NIIN: 00-439-5598 (004395598)
- Item name: SPACER ASSEMBLY,SPLINED
- 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 2026-11-04)
- Acquisition method code: 3

## Characteristics

| Code | Requirement | Reply |
| --- | --- | --- |
| ABHP | OVERALL LENGTH | INCHES NOMINAL 0.318 |
| MATT | MATERIAL | STEEL |
| FEAT | SPECIAL FEATURES | 26 TEETH; 1.300 IN. PITCH DIA; 30 DEG PRESSURE ANGLE; 1.125 IN. BASE CIRCLE DIAL; 0.157 IN. CIRCULAR PITCH |
| ADAV | OVERALL DIAMETER | INCHES NOMINAL 1.940 |

## Part numbers

| Part number | CAGE | Supplier | Source |
| --- | --- | --- | --- |
| 212-040-457-001 | 97499 | BELL TEXTRON INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 212-040-457-1 | 06671 | BETA CORP | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 212-040-457-1 | 34374 | P/M ENGINEERING CO INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |
| 212-040-457-1 | 97499 | BELL TEXTRON INC | [flis](https://www.dla.mil/Portals/104/Documents/InformationOperations/LogisticsInformationServices/FOIA/PUBLOG/) |

## Contract awards

Newest first.

| Date | Award | Description | Recipient | Amount |
| --- | --- | --- | --- | --- |
| 2026-08-18 | [SPE4A726PF353](https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=1615004395598) | SPACER ASSEMBLY, SPL | HERMES TECHNICAL INTERNATIONAL, INC. | $3,600.00 |

## Sources

- DLA DIBBS RFQs for this NSN: https://www.dibbs.bsm.dla.mil/RFQ/RFQNsn.aspx?value=1615004395598&category=nsn
- DLA DIBBS awards for this NSN: https://www.dibbs.bsm.dla.mil/Awards/AwdRecs.aspx?category=awdnsn&TypeSrch=cq&Value=1615004395598
- 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/1615-00-439-5598/
JSON: https://nsnexplorer.com/api/nsn/1615-00-439-5598.json