NSN 4820-01-311-3940 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-311-3940. Manufacturer of record part number: 505-4456281 ITEM 17.
Manufacturer of record: Huntington Ingalls Inc Div Newport News Shipbuilding
Identification
NSN: 4820-01-311-3940
NIIN: 013113940
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 505-4456281 ITEM 17
Manufacturer: Huntington Ingalls Inc Div Newport News Shipbuilding
General Description
The Stem,fluid Valve, cataloged under National Stock Number 4820-01-311-3940, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Huntington Ingalls Inc Div Newport News Shipbuilding. Government technical data includes 3 specifications, 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. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-01-311-3940
Primary Part Number
505-4456281 ITEM 17
Item Name
Stem,fluid Valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Huntington Ingalls Inc Div Newport News Shipbuilding
Huntington Ingalls Inc Div Newport News Shipbuilding (USA)
No interchangeability data on file.
Other items in FSC 4820 — Valves, Nonpowered
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097
4820-00-000-0097 · Item name not on file
4820-00-001-0010
VALVE,ROTARY,SELECTOR
4820-00-001-0020
4820-00-001-0020 · Item name not on file
4820-00-001-0021
4820-00-001-0021 · Item name not on file
4820-00-001-0032
4820-00-001-0032 · Item name not on file
4820-00-001-0037
VALVE,SAFETY RELIEF
4820-00-001-0042
4820-00-001-0042 · Item name not on file
4820-00-001-1230
4820-00-001-1230 · Item name not on file
Frequently Asked Questions
What is NSN 4820-01-311-3940?
NSN 4820-01-311-3940 is a Stem,fluid Valve, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-311-3940?
NSN 4820-01-311-3940 has 1 manufacturer part number on file: 505-4456281 ITEM 17 (Huntington Ingalls Inc Div Newport News Shipbuilding).
What are the specifications of 505-4456281 ITEM 17?
Key specifications for 505-4456281 ITEM 17: Largest Outside Diameter: 1.125 INCHES NOMINAL IN; Stem Actuating End Type: THREADED EXTERNALLY; Overall Length: 3.312 INCHES NOMINAL IN; Material: NICKEL ALLOY. 3 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-311-3940 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.