The Spacer,sleeve, cataloged under National Stock Number 5365-00-003-6550, is classified within Federal Supply Class 5365 (Bushings, Rings, Shims, and Spacers) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5365-00-003-6550 |
| Primary Part Number | A51B96539-11 |
| Item Name | Spacer,sleeve |
| FSC / FSG | 5365 / 53 — Bushings, Rings, Shims, and Spacers |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Corner Shape | SQUARE ALL CORNERS |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Flange Outside Diameter | 0.9700 INCHES NOMINAL IN |
| Body Outside Diameter | 0.6887 INCHES MINIMUM AND 0.6892 INCHES MAXIMUM IN |
| Criticality Code Justification | ADAS AND ADAR |
| Style Designator | SOLID, EXTERNAL FLANGE ONE END |
| Body Inside Diameter | 0.5610 INCHES MINIMUM AND 0.5623 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Flange Width | 0.0270 INCHES MINIMUM AND 0.0320 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| A51B96539-11 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| A51B96539-15 | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| A51B96539-11 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
| A51B96539-15 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| A51B96539-11 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
NSN 5365-00-003-6550 is a Spacer,sleeve, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.
NSN 5365-00-003-6550 has 2 manufacturer part numbers on file: A51B96539-11 (Northrop Grumman Systems Corporation), A51B96539-15 (Northrop Grumman Systems Corporation).
Key specifications for A51B96539-11: Corner Shape: SQUARE ALL CORNERS; Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Flange Outside Diameter: 0.9700 INCHES NOMINAL IN; Body Outside Diameter: 0.6887 INCHES MINIMUM AND 0.6892 INCHES MAXIMUM IN. 10 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.