The Ring,retaining,instrument, cataloged under National Stock Number 5365-01-004-1289, 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 Support Services Corp. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5365-01-004-1289 |
| Primary Part Number | 343D146G01 |
| Item Name | Ring,retaining,instrument |
| FSC / FSG | 5365 / 53 — Bushings, Rings, Shims, and Spacers |
| Manufacturer | Northrop Grumman Support Services Corp |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM ALLOY,18.175 IN. OD,15.880 IN. ID,0.750 IN. LG,6 HOLES 0.406 IN. DIA EQUALLY SPACED ON 17.250 IN. BOLT CIRCLE 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 |
|---|---|
| 343D146G01 PRIMARY | Northrop Grumman Support Services Corp (USA) |
| Reference | Meaning |
|---|---|
| 343D146G01 | 3/9 Design control — primary reference U.S. Government activity |
| 343D146G01 | 5/9 Secondary reference Gould Inc Defense Systems Navcom Systems Div 3dbm Opns |
| 343D146G01 | 5/2 Secondary reference U.S. Government activity |
| 41697-1 | 5/9 Secondary reference Baytron Systems Corp |
NSN 5365-01-004-1289 is a Ring,retaining,instrument, manufactured by Northrop Grumman Support Services Corp, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.
NSN 5365-01-004-1289 has 1 manufacturer part number on file: 343D146G01 (Northrop Grumman Support Services Corp).
Key specifications for 343D146G01: General Characteristics Item Description: ALUMINUM ALLOY,18.175 IN. OD,15.880 IN. ID,0.750 IN. LG,6 HOLES 0.406 IN. DIA EQUALLY SPACED ON 17.250 IN. BOLT CIRCLE IN. 1 specification is 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.