The Retainer,cylinder, cataloged under National Stock Number 3010-01-121-1438, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3010-01-121-1438 |
| Primary Part Number | 518-4674803 ITEM 6 |
| Item Name | Retainer,cylinder |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| General Characteristics Item Description | MATERIAL NIALBRZ PER MIL-B-24059; O/A LG 1.020 IN.; ONE END THREADED 1.125-12UNF-3A; 0.500 IN. LG; BORE DIA 0.375 IN. A |
| 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 |
|---|---|
| 518-4674803 ITEM 6 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 518-4674803 | 5/1 Secondary reference Naval Sea Systems Command |
| 0726-301PC6 | 5/9 Secondary reference Aluf Industries Inc |
| 87625-0305 ITEM 6 | 3/2 Design control — primary reference U.S. Government activity |
| 518-4674803 | D/9 Drawing number reference only U.S. Government activity |
| 0726-301PC6 | 5/9 Secondary reference Dynatek-Technology Inc |
NSN 3010-01-121-1438 is a Retainer,cylinder, manufactured by Naval Sea Systems Command, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-01-121-1438 has 1 manufacturer part number on file: 518-4674803 ITEM 6 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-121-1439. Verify interchangeability with system specifications before substitution.
Key specifications for 518-4674803 ITEM 6: General Characteristics Item Description: MATERIAL NIALBRZ PER MIL-B-24059; O/A LG 1.020 IN.; ONE END THREADED 1.125-12UNF-3A; 0.500 IN. LG; BORE DIA 0.375 IN. A. 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.