The Spacer,plate, cataloged under National Stock Number 5365-01-358-3121, 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. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5365-01-358-3121 |
| Primary Part Number | SK56Y21-92-1 SIZE D-050 |
| Item Name | Spacer,plate |
| FSC / FSG | 5365 / 53 — Bushings, Rings, Shims, and Spacers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| 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 |
|---|---|
| D-050 | International Mechanical Shim Corp Dba San Diego Shim and Algnmt Co (USA) |
| 0D05020 | Igs Industries Inc (USA) |
| SK56Y21-92-1 SIZE D-050 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 922951 | 5/9 Secondary reference Mars Technologies Inc Dba American Metals Company |
NSN 5365-01-358-3121 is a Spacer,plate, manufactured by Naval Sea Systems Command, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.
NSN 5365-01-358-3121 has 3 manufacturer part numbers on file: D-050 (International Mechanical Shim Corp Dba San Diego Shim and Algnmt Co), 0D05020 (Igs Industries Inc), SK56Y21-92-1 SIZE D-050 (Naval Sea Systems Command).
Key specifications for SK56Y21-92-1 SIZE D-050: Overall Length: 4.688 INCHES NOMINAL IN; Overall Width: 4.000 INCHES NOMINAL IN. 0 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.