NSN 4820-01-445-3989 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-445-3989. Manufacturer of record part number: 1FA1305525.
Also searched as4820-01-445-3989 ·
4820014453989 ·
NIIN 014453989 ·
01-445-3989 ·
FSC 4820 Valves, Nonpowered · CAGE 26437 · 1FA1305525
Manufacturer of record: Triumph Actuation Systems, Llc Div Triumph Actuation Systems - Freeport
Identification
NSN: 4820-01-445-3989
NIIN: 014453989
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 1FA1305525
Manufacturer: Triumph Actuation Systems, Llc Div Triumph Actuation Systems - Freeport
General Description
The Piston,valve, cataloged under National Stock Number 4820-01-445-3989, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Triumph Actuation Systems, Llc Div Triumph Actuation Systems - Freeport. 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
4820-01-445-3989
Primary Part Number
1FA1305525
Item Name
Piston,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Triumph Actuation Systems, Llc Div Triumph Actuation Systems - Freeport
Triumph Actuation Systems, Llc Div Triumph Actuation Systems - Freeport (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 4820-01-445-3989?
NSN 4820-01-445-3989 is a Piston,valve, manufactured by Triumph Actuation Systems, Llc Div Triumph Actuation Systems - Freeport, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-445-3989?
NSN 4820-01-445-3989 has 1 manufacturer part number on file: 1FA1305525 (Triumph Actuation Systems, Llc Div Triumph Actuation Systems - Freeport).
What are the specifications of 1FA1305525?
Key specifications for 1FA1305525: End Item Identification: NSN 1520-01-088-3669; HELICOPTER, CHINOOK, CH-47. 0 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-445-3989 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.