The Seat,valve, cataloged under National Stock Number 4820-01-129-9732, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Catalog Facts
Item Name
Seat,valve
FSC / FSG
4820 — Valves, Nonpowered (FSG 48)
Technical Specifications
Parameter
Value
NSN
4820-01-129-9732
Item Name
Seat,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
⇄Related Items3
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4820-01-247-7780N09976POSSIBLE MATCH
ROD,PILOT VALVE
Possible match (shared part number)Leslie Controls, Inc. Dba Leslie Controls Inc
3439-01-293-7757POSSIBLE MATCH
TIP,ELECTRIC SOLDERING IRON
Possible match (shared part number)
6665-01-569-3649XX6310003POSSIBLE MATCH
BAG,CARRYING,SMALL
Possible match (shared part number)Emd Millipore Corp Dba Milliporesigma Div Emd Millipore Corporation
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
9976
3/2Design control — primary reference
U.S. Government activity
Related Parts
4820-01-247-7780POSSIBLE MATCH
ROD,PILOT VALVE
N09976
3439-01-293-7757POSSIBLE MATCH
TIP,ELECTRIC SOLDERING IRON
6665-01-569-3649POSSIBLE MATCH
BAG,CARRYING,SMALL
XX6310003
Frequently Asked Questions
What is NSN 4820-01-129-9732?
NSN 4820-01-129-9732 is a Seat,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
What NSN replaces 4820-01-129-9732?
3 possible matches (shared part number, not a government interchangeability claim): 4820-01-247-7780, 3439-01-293-7757, 6665-01-569-3649. Verify interchangeability with system specifications before substitution.
Is NSN 4820-01-129-9732 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.