NSN 4820-01-158-4591 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-158-4591. Manufacturer of record part number: N5726 PIECE 3.
The Seat,valve, cataloged under National Stock Number 4820-01-158-4591, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Tate Andale, Llc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 9 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-01-158-4591
Primary Part Number
N5726 PIECE 3
Item Name
Seat,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Tate Andale, Llc
Status
ACTIVE
Material
COPPER ALLOY OVERALL
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL Q — CCL Item — Commerce Control List
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items9
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
NSN 4820-01-158-4591 is a Seat,valve, manufactured by Tate Andale, Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-158-4591?
NSN 4820-01-158-4591 has 1 manufacturer part number on file: N5726 PIECE 3 (Tate Andale, Llc).
What NSN replaces 4820-01-158-4591?
9 possible matches (shared part number, not a government interchangeability claim): 4730-01-158-4596, 4730-01-158-4597, 5340-01-158-4598. Verify interchangeability with system specifications before substitution.
What are the specifications of N5726 PIECE 3?
Key specifications for N5726 PIECE 3: Material: COPPER ALLOY OVERALL. 1 specification is documented in the U.S. Government catalog.
Is NSN 4820-01-158-4591 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.
What is the DEMIL code for NSN 4820-01-158-4591?
NSN 4820-01-158-4591 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.