The Piston Snorkel Mast, cataloged under National Stock Number 2040-01-160-0838, 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 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 2040-01-160-0838 |
| Primary Part Number | 501-4457338 ITEM 67 |
| Item Name | Piston Snorkel Mast |
| FSC / FSG | 2040 / 20 — Marine Hardware and Hull Items |
| Manufacturer | Huntington Ingalls Inc Div Newport News Shipbuilding |
| Status | ACTIVE |
| General Characteristics Item Description | TIN-BRONZE QQ-C-390 ALLOY D5 TYPE 3 MATERIAL,3.989 IN. DIA 3.313 IN. LG 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 |
|---|---|
| 6501-14 ITEM 67 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 501-4457338 ITEM 67 PRIMARY | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| Reference | Meaning |
|---|---|
| 6501-59 ITEM 12 | C/1 Advisory reference — outside the item-of-supply concept Huntington Ingalls Inc Div Newport News Shipbuilding |
NSN 2040-01-160-0838 is a Piston Snorkel Mast, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 2040, Marine Hardware and Hull Items. Status: active.
NSN 2040-01-160-0838 has 2 manufacturer part numbers on file: 6501-14 ITEM 67 (Huntington Ingalls Inc Div Newport News Shipbuilding), 501-4457338 ITEM 67 (Huntington Ingalls Inc Div Newport News Shipbuilding).
Key specifications for 501-4457338 ITEM 67: General Characteristics Item Description: TIN-BRONZE QQ-C-390 ALLOY D5 TYPE 3 MATERIAL,3.989 IN. DIA 3.313 IN. LG 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.