The Spacer,ring, cataloged under National Stock Number 5365-01-012-5378, is classified within Federal Supply Class 5365 (Bushings, Rings, Shims, and Spacers) of the Hardware and Abrasives group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 9 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5365-01-012-5378 |
| Primary Part Number | 502AS2878 |
| Item Name | Spacer,ring |
| FSC / FSG | 5365 / 53 — Bushings, Rings, Shims, and Spacers |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES LARGEST OUTSIDE DIAMETER |
| Surface Finish | 63.0 MICROINCHES RIGHT SIDE |
| Surface Finish | 63.0 MICROINCHES LEFT SIDE |
| Surface Finish | 125.0 MICROINCHES BORE |
| Outside Diameter | 2.000 INCHES MINIMUM AND 2.020 INCHES MAXIMUM IN |
| Overall Thickness | 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 4507 ASSN STD 1ST MATERIAL RESPONSE OR AMS 4611 ASSN STD 2ND MATERIAL RESPONSE |
| Inside Diameter | 1.755 INCHES MINIMUM AND 1.765 INCHES MAXIMUM IN |
| Material | COPPER ALLOY 260 OR COPPER ALLOY 464 |
| 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 |
|---|---|
| 502AS2878 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
NSN 5365-01-012-5378 is a Spacer,ring, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.
NSN 5365-01-012-5378 has 1 manufacturer part number on file: 502AS2878 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 502AS2878: Surface Finish: 125.0 MICROINCHES LARGEST OUTSIDE DIAMETER; Surface Finish: 63.0 MICROINCHES RIGHT SIDE; Surface Finish: 63.0 MICROINCHES LEFT SIDE; Surface Finish: 125.0 MICROINCHES BORE. 9 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.