The Spacer,sleeve, cataloged under National Stock Number 5365-00-490-1971, is classified within Federal Supply Class 5365 (Bushings, Rings, Shims, and Spacers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5365-00-490-1971 |
| Primary Part Number | HS12-4-028-300 |
| Item Name | Spacer,sleeve |
| FSC / FSG | 5365 / 53 — Bushings, Rings, Shims, and Spacers |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Corner Shape | SQUARE ALL CORNERS |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Body Outside Diameter | 0.2500 INCHES NOMINAL IN |
| Style Designator | SOLID, PLAIN, NO OUTSIDE FLANGES |
| Body Inside Diameter | 0.1940 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| 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 | X |
| Part Number | Manufacturer |
|---|---|
| HS12-4-028-300 PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| HS12-4-028-30 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
| HS12-4-028-30 | 5/9 Secondary reference The Boeing Company |
| HS12-4-028-300 | 3/9 Design control — primary reference Mcdonnell Douglas Helicopter Co Inc |
NSN 5365-00-490-1971 is a Spacer,sleeve, manufactured by The Boeing Company, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.
NSN 5365-00-490-1971 has 1 manufacturer part number on file: HS12-4-028-300 (The Boeing Company).
Key specifications for HS12-4-028-300: Corner Shape: SQUARE ALL CORNERS; Surface Treatment Document and Classification: QQ-P-416,TY 2,CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Body Outside Diameter: 0.2500 INCHES NOMINAL IN; Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES. 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.