The Carrier and Idler Assembly, cataloged under National Stock Number 4320-01-138-2007, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-138-2007 |
| Primary Part Number | 3289521 PIECE 29 X 31 |
| Item Name | Carrier and Idler Assembly |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| General Characteristics Item Description | CAST IRON CARRIER; STEEL IDLER PIN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 3289521 PIECE 29 X 31 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6R6 | 5/9 Secondary reference Tuthill Corporation Dba Tuthill Pump Group |
| 3289521 | D/9 Drawing number reference only Naval Sea Systems Command |
| 6R29 AND 6M31 | 3/9 Design control — primary reference Tuthill Corporation Dba Tuthill Pump Group |
NSN 4320-01-138-2007 is a Carrier and Idler Assembly, manufactured by Naval Sea Systems Command, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-138-2007 has 1 manufacturer part number on file: 3289521 PIECE 29 X 31 (Naval Sea Systems Command).
Key specifications for 3289521 PIECE 29 X 31: General Characteristics Item Description: CAST IRON CARRIER; STEEL IDLER PIN; End Item Identification: TUTHILL SPECIAL PUMP MODEL 6RCC-X592. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.