The Knife Edge, cataloged under National Stock Number 2825-00-385-9402, is classified within Federal Supply Class 2825 (Steam Turbines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Siemens Energy, Inc.. 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through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2825-00-385-9402 |
| Primary Part Number | HC271E |
| Item Name | Knife Edge |
| FSC / FSG | 2825 / 28 — Steam Turbines and Components |
| Manufacturer | Siemens Energy, Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | CARBON STEEL;1.625 IN.LG;1.125 IN.THK 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 |
|---|---|
| HC271E PRIMARY | Siemens Energy, Inc. (USA) |
| Reference | Meaning |
|---|---|
| G17188-36 | 5/9 Secondary reference Ships Parts Inc |
| G10018PC36 | 5/9 Secondary reference Siemens Energy, Inc. |
| G10086-36 | 5/9 Secondary reference Siemens Energy, Inc. |
| G10072PC36 | 5/9 Secondary reference Siemens Energy, Inc. |
| AR5S55-0139PC18 | 5/9 Secondary reference U.S. Government activity |
| CLC-G10503HC-271E | 5/9 Secondary reference Lowe Charles M Co the |
| G10025PC36 | 5/9 Secondary reference Siemens Energy, Inc. |
| L-2185 | 5/9 Secondary reference Rps-Fl, Inc. Dba Rps Inc |
| G10033PC36 | 5/9 Secondary reference Siemens Energy, Inc. |
| G10086PC36 | 5/9 Secondary reference Siemens Energy, Inc. |
NSN 2825-00-385-9402 is a Knife Edge, manufactured by Siemens Energy, Inc., classified under FSC 2825, Steam Turbines and Components. Status: active.
NSN 2825-00-385-9402 has 1 manufacturer part number on file: HC271E (Siemens Energy, Inc.).
Key specifications for HC271E: General Characteristics Item Description: CARBON STEEL;1.625 IN.LG;1.125 IN.THK 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.