The Adapter,brake Drum, cataloged under National Stock Number 3040-01-488-8390, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 2 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-488-8390 |
| Primary Part Number | 122-6602811 PC 23 |
| Item Name | Adapter,brake Drum |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Overall Diameter | 3.000 INCHES MAXIMUM IN |
| Material | STEEL |
| 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 |
|---|---|
| 122-6602811 PC 23 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 122-6602811 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3040-01-488-8390 is a Adapter,brake Drum, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-488-8390 has 1 manufacturer part number on file: 122-6602811 PC 23 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 3120-01-494-6907. Verify interchangeability with system specifications before substitution.
Key specifications for 122-6602811 PC 23: Overall Height: 4.000 INCHES MAXIMUM IN; Overall Diameter: 3.000 INCHES MAXIMUM IN; Special Features: TAPERED SLOT TOP 1 7/8 DIAM, SLOT BOTTOM DIAM 31/32, ITEM GROOVED 3/16 X 1/8, 1/2 INCH FROM TOP, MATERIAL SPEC: MIL-S-22698 GR B IN; Part Name Assigned by Controlling Agency: DRUM SOCKET. 2 specifications are 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.