The End Cap Assembly, cataloged under National Stock Number 4420-01-157-3185, is classified within Federal Supply Class 4420 (Heat Exchangers and Steam Condensers) of the Furnace, Steam, Drying, Nuclear Reactors group. The manufacturer of record is Cae Usa Inc.. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | End Cap Assembly |
| FSC / FSG | 4420 — Heat Exchangers and Steam Condensers (FSG 44) |
| Manufacturers | Cae Usa Inc. (CAGE 1PQF4) |
| Parameter | Value |
|---|---|
| NSN | 4420-01-157-3185 |
| Primary Part Number | B57-13577-7 |
| Item Name | End Cap Assembly |
| FSC / FSG | 4420 / 44 — Heat Exchangers and Steam Condensers |
| Manufacturer | Cae Usa Inc. |
| 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 |
|---|---|
| B57-13577-7 PRIMARY | Cae Usa Inc. (USA) |
| Reference | Meaning |
|---|---|
| F57-13577-1 PIECE 6 | 5/9 Secondary reference Raytheon Technical Services Company |
| F57-13577-1 | D/9 Drawing number reference only Raytheon Technical Services Company |
| B57-13577-7 | 5/9 Secondary reference Raytheon Technical Services Company |
NSN 4420-01-157-3185 is a End Cap Assembly, manufactured by Cae Usa Inc., classified under FSC 4420, Heat Exchangers and Steam Condensers. Status: active.
NSN 4420-01-157-3185 has 1 manufacturer part number on file: B57-13577-7 (Cae Usa Inc.).
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.