The Spacer,ring, cataloged under National Stock Number 5365-00-522-9356, is classified within Federal Supply Class 5365 (Bushings, Rings, Shims, and Spacers) of the Hardware and Abrasives group. The manufacturer of record is Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems. 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5365-00-522-9356 |
| Primary Part Number | 45140-2 |
| Item Name | Spacer,ring |
| FSC / FSG | 5365 / 53 — Bushings, Rings, Shims, and Spacers |
| Manufacturer | Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES RIGHT SIDE |
| Surface Finish | 32.0 MICROINCHES LEFT SIDE |
| Surface Treatment Document and Classification | MIL-F-14072,FINISH NO. E300 MIL SPEC SINGLE TREATMENT RESPONSE |
| Outside Diameter | 0.624 INCHES MINIMUM AND 0.628 INCHES MAXIMUM IN |
| Overall Thickness | 0.075 INCHES NOMINAL IN |
| Material Document and Classification | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE |
| Inside Diameter | 0.530 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE |
| Material | STEEL COMP 630 |
| 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 |
|---|---|
| 45140-2 PRIMARY | Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems (USA) |
NSN 5365-00-522-9356 is a Spacer,ring, manufactured by Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.
NSN 5365-00-522-9356 has 1 manufacturer part number on file: 45140-2 (Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems).
1 possible match (shared part number, not a government interchangeability claim): 5999-01-319-5345. Verify interchangeability with system specifications before substitution.
Key specifications for 45140-2: Surface Finish: 32.0 MICROINCHES RIGHT SIDE; Surface Finish: 32.0 MICROINCHES LEFT SIDE; Surface Treatment Document and Classification: MIL-F-14072,FINISH NO. E300 MIL SPEC SINGLE TREATMENT RESPONSE; Outside Diameter: 0.624 INCHES MINIMUM AND 0.628 INCHES MAXIMUM IN. 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.