NSN 4820-00-021-2944 · NIIN 000212944 · Part number LD616591
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 10001
Government record, cited
NSN 4820-00-021-2944 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-021-2944. Manufacturer of record part number: LD616591.
Manufacturer of record: Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
Identification
NSN: 4820-00-021-2944
NIIN: 000212944
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: LD616591
Manufacturer: Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
General Description
The Valve,safety Relief, cataloged under National Stock Number 4820-00-021-2944, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. 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. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-00-021-2944
Primary Part Number
LD616591
Item Name
Valve,safety Relief
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (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 4820-00-021-2944?
NSN 4820-00-021-2944 is a Valve,safety Relief, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-00-021-2944?
NSN 4820-00-021-2944 has 2 manufacturer part numbers on file: 2481639 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), LD616591 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
What are the specifications of LD616591?
Key specifications for LD616591: Mounting Facility: BRACKET(S). 1 specification is documented in the U.S. Government catalog.
Is NSN 4820-00-021-2944 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.