The Spacer,ring, cataloged under National Stock Number 5365-01-231-9923, is classified within Federal Supply Class 5365 (Bushings, Rings, Shims, and Spacers) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Corporation. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5365-01-231-9923 |
| Primary Part Number | 4078493-3 |
| Item Name | Spacer,ring |
| FSC / FSG | 5365 / 53 — Bushings, Rings, Shims, and Spacers |
| Manufacturer | Lockheed Martin Corporation |
| Status | ACTIVE |
| FSC Application Data | ANTI-COLLISION LIGHT,TAIL |
| Outside Diameter | 4.310 INCHES NOMINAL IN |
| Overall Thickness | 0.500 INCHES NOMINAL IN |
| Inside Diameter | 3.810 INCHES NOMINAL IN |
| 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 |
|---|---|
| 4078493-3 | Lockheed Martin Corporation (USA) |
| Reference | Meaning |
|---|---|
| 4078493-3 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5365-01-231-9923 is a Spacer,ring, manufactured by Lockheed Martin Corporation, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.
NSN 5365-01-231-9923 has 1 manufacturer part number on file: 4078493-3 (Lockheed Martin Corporation).
Key specifications for 4078493-3: FSC Application Data: ANTI-COLLISION LIGHT,TAIL; Outside Diameter: 4.310 INCHES NOMINAL IN; Overall Thickness: 0.500 INCHES NOMINAL IN; Inside Diameter: 3.810 INCHES NOMINAL IN. 4 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.