The Cover and Spring As, cataloged under National Stock Number 4520-01-157-6121, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. The manufacturer of record is Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Cover and Spring As |
| FSC / FSG | 4520 — Space and Water Heating Equipment (FSG 45) |
| Manufacturers | Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric (CAGE 11440) |
| Parameter | Value |
|---|---|
| NSN | 4520-01-157-6121 |
| Primary Part Number | C171-208-5 ASSY 4 |
| Item Name | Cover and Spring As |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| C171-208-ASSY 4 | Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric (USA) |
| C171-208-5 ASSY 4 PRIMARY | Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric (USA) |
| Reference | Meaning |
|---|---|
| C-171-208-4ASSY | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| C171-208-4 | 5/9 Secondary reference Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric |
| C171-208-4ASSY | 5/9 Secondary reference Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric |
NSN 4520-01-157-6121 is a Cover and Spring As, manufactured by Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-157-6121 has 2 manufacturer part numbers on file: C171-208-ASSY 4 (Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric), C171-208-5 ASSY 4 (Ge Steam Power Inc Dba Ge Steam Power, Inc Div General Electric).
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.