The Spacer,sleeve, cataloged under National Stock Number 5365-01-491-9559, is classified within Federal Supply Class 5365 (Bushings, Rings, Shims, and Spacers) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5365-01-491-9559 |
| Primary Part Number | 124-7120998 PC 9-94 |
| Item Name | Spacer,sleeve |
| FSC / FSG | 5365 / 53 — Bushings, Rings, Shims, and Spacers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Corner Shape | SQUARE ALL CORNERS |
| Flange Outside Diameter | 10.4380 INCHES NOMINAL IN |
| Body Outside Diameter | 7.3120 INCHES NOMINAL IN |
| Style Designator | BLANK, EXTERNAL FLANGE ONE END |
| Body Inside Diameter | 0.8120 INCHES NOMINAL IN |
| Flange Width | 0.5000 INCHES NOMINAL IN |
| Material | ZINC OVERALL |
| 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 |
|---|---|
| 124-7120998 PC 9-94 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 124-7120998 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 5365-01-491-9559 is a Spacer,sleeve, manufactured by Naval Sea Systems Command, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.
NSN 5365-01-491-9559 has 1 manufacturer part number on file: 124-7120998 PC 9-94 (Naval Sea Systems Command).
2 possible matches (shared part number, not a government interchangeability claim): 5365-01-491-9574, 5365-01-491-9592. Verify interchangeability with system specifications before substitution.
Key specifications for 124-7120998 PC 9-94: Corner Shape: SQUARE ALL CORNERS; Flange Outside Diameter: 10.4380 INCHES NOMINAL IN; Body Outside Diameter: 7.3120 INCHES NOMINAL IN; Style Designator: BLANK, EXTERNAL FLANGE ONE END. 7 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.