The Key,machine, cataloged under National Stock Number 5315-01-381-2041, is classified within Federal Supply Class 5315 (Nails, Machine Keys, and Pins) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5315-01-381-2041 |
| Primary Part Number | 6556605 PIECE 45 |
| Item Name | Key,machine |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Starting Edge Shape | ROUNDROUND |
| Style Designator | PLAINPLAIN |
| Starting Edge Radius | 0.375 INCHES NOMINAL0.375 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 |
|---|---|
| 6556605 PIECE 45 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| D20147-45 | 5/9 Secondary reference U.S. Government activity |
| 845-6556605PC45 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 5315-01-381-2041 is a Key,machine, manufactured by Naval Sea Systems Command, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-01-381-2041 has 1 manufacturer part number on file: 6556605 PIECE 45 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 5315-01-469-5723. Verify interchangeability with system specifications before substitution.
Key specifications for 6556605 PIECE 45: Overall Height: 0.750 INCHES NOMINAL0.750 INCHES NOMINAL IN; Starting Edge Shape: ROUNDROUND; Style Designator: PLAINPLAIN; Overall Length: 2.500 INCHES NOMINAL2.500 INCHES NOMINAL IN. 3 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.