The Spacer,ring, cataloged under National Stock Number 5365-01-423-6737, is classified within Federal Supply Class 5365 (Bushings, Rings, Shims, and Spacers) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5365-01-423-6737 |
| Primary Part Number | 801-6408779 FIND 57 |
| Item Name | Spacer,ring |
| FSC / FSG | 5365 / 53 — Bushings, Rings, Shims, and Spacers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Outside Diameter | 4.127 INCHES NOMINAL IN |
| Overall Thickness | 0.625 INCHES NOMINAL IN |
| Material Document and Classification | QQ-N-281,CL A,FORM 1,COND HF FED SPEC SINGLE MATERIAL RESPONSE |
| Inside Diameter | 3.425 INCHES NOMINAL IN |
| Material | NICKEL ALLOY 400 |
| 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 |
|---|---|
| 801-6408779 FIND 57 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| DF330636 FN 57 | 5/1 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
| 211070074 | 5/1 Secondary reference Naval Sea Systems Command |
NSN 5365-01-423-6737 is a Spacer,ring, manufactured by Naval Sea Systems Command, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.
NSN 5365-01-423-6737 has 1 manufacturer part number on file: 801-6408779 FIND 57 (Naval Sea Systems Command).
Key specifications for 801-6408779 FIND 57: Outside Diameter: 4.127 INCHES NOMINAL IN; Overall Thickness: 0.625 INCHES NOMINAL IN; Material Document and Classification: QQ-N-281,CL A,FORM 1,COND HF FED SPEC SINGLE MATERIAL RESPONSE; Inside Diameter: 3.425 INCHES NOMINAL IN. 5 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.