The Fairing Assembly,periscope, cataloged under National Stock Number 2040-01-256-3160, is classified within Federal Supply Class 2040 (Marine Hardware and Hull Items) of the Ship and Marine Equipment group. The manufacturer of record is Huntington Ingalls Inc Div Newport News Shipbuilding. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2040-01-256-3160 |
| Primary Part Number | 400-4457257 ASSEMBLY 99 |
| Item Name | Fairing Assembly,periscope |
| FSC / FSG | 2040 / 20 — Marine Hardware and Hull Items |
| Manufacturer | Huntington Ingalls Inc Div Newport News Shipbuilding |
| Status | ACTIVE |
| General Characteristics Item Description | INCLUDES MOLDED SECTIONS FORWARD AND AFT,RETAINERS,ADAPTER,GASKETS,INSERTS,FITTING,I BEAM SECTION,PADS,BEARINGS,SLEEVES,PINS,BOLTS AND SCREWS |
| 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 |
|---|---|
| 400-4457257 ASSEMBLY 99 PRIMARY | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| Reference | Meaning |
|---|---|
| 400-4457257 ASSEMBLY 99 | 5/2 Secondary reference U.S. Government activity |
NSN 2040-01-256-3160 is a Fairing Assembly,periscope, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 2040, Marine Hardware and Hull Items. Status: active.
NSN 2040-01-256-3160 has 1 manufacturer part number on file: 400-4457257 ASSEMBLY 99 (Huntington Ingalls Inc Div Newport News Shipbuilding).
Key specifications for 400-4457257 ASSEMBLY 99: General Characteristics Item Description: INCLUDES MOLDED SECTIONS FORWARD AND AFT,RETAINERS,ADAPTER,GASKETS,INSERTS,FITTING,I BEAM SECTION,PADS,BEARINGS,SLEEVES,PINS,BOLTS AND SCREWS. 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.