The Seat,valve, cataloged under National Stock Number 4820-00-403-1129, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 12 items share a part number with this NSN in the catalog (possible match — not a government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
4820-00-403-1129
Item Name
Seat,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Status
ACTIVE
Material
PLASTIC POLYTETRAFLUOROETHYLENE OVERALL
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items12
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
2920-00-733-7000POSSIBLE MATCH
KIT REPAIR STARTER
Possible match (shared part number)
6920-01-180-292026924POSSIBLE MATCH
TRAINING SET,TARGET SYSTEM,RADIO
Possible match (shared part number)Teledyne Brown Engineering, Inc.
6150-01-306-824426974-812POSSIBLE MATCH
LEAD,ELECTRICAL
Possible match (shared part number)Fisica Applied Technologies, Inc. Div Randtron Antenna Systems
5995-01-328-028426974-1012POSSIBLE MATCH
LEAD,ELECTRICAL
Possible match (shared part number)Fisica Applied Technologies, Inc. Div Randtron Antenna Systems
5995-01-328-028526974-1075POSSIBLE MATCH
LEAD,ELECTRICAL
Possible match (shared part number)Fisica Applied Technologies, Inc. Div Randtron Antenna Systems
5995-01-328-028626974-1212POSSIBLE MATCH
LEAD,ELECTRICAL
Possible match (shared part number)Fisica Applied Technologies, Inc. Div Randtron Antenna Systems
6150-01-328-634726974-1262POSSIBLE MATCH
LEAD,ELECTRICAL
Possible match (shared part number)Fisica Applied Technologies, Inc. Div Randtron Antenna Systems
6150-01-328-634826974-1288POSSIBLE MATCH
LEAD,ELECTRICAL
Possible match (shared part number)Fisica Applied Technologies, Inc. Div Randtron Antenna Systems
6150-01-328-634926974-1394POSSIBLE MATCH
LEAD,ELECTRICAL
Possible match (shared part number)Fisica Applied Technologies, Inc. Div Randtron Antenna Systems
5995-01-328-845626974-1225POSSIBLE MATCH
LEAD,ELECTRICAL
Possible match (shared part number)Fisica Applied Technologies, Inc. Div Randtron Antenna Systems
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
26974
3/2Design control — primary reference
U.S. Government activity
Related Parts
2920-00-733-7000POSSIBLE MATCH
KIT REPAIR STARTER
6920-01-180-2920POSSIBLE MATCH
TRAINING SET,TARGET SYSTEM,RADIO
26924
6150-01-306-8244POSSIBLE MATCH
LEAD,ELECTRICAL
26974-812
5995-01-328-0284POSSIBLE MATCH
LEAD,ELECTRICAL
26974-1012
5995-01-328-0285POSSIBLE MATCH
LEAD,ELECTRICAL
26974-1075
5995-01-328-0286POSSIBLE MATCH
LEAD,ELECTRICAL
26974-1212
6150-01-328-6347POSSIBLE MATCH
LEAD,ELECTRICAL
26974-1262
6150-01-328-6348POSSIBLE MATCH
LEAD,ELECTRICAL
26974-1288
6150-01-328-6349POSSIBLE MATCH
LEAD,ELECTRICAL
26974-1394
5995-01-328-8456POSSIBLE MATCH
LEAD,ELECTRICAL
26974-1225
5995-01-328-8457POSSIBLE MATCH
LEAD,ELECTRICAL
26974-1538
5995-01-328-8458POSSIBLE MATCH
LEAD,ELECTRICAL
26974-1562
Frequently Asked Questions
What is NSN 4820-00-403-1129?
NSN 4820-00-403-1129 is a Seat,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
What NSN replaces 4820-00-403-1129?
12 possible matches (shared part number, not a government interchangeability claim): 2920-00-733-7000, 6920-01-180-2920, 6150-01-306-8244. Verify interchangeability with system specifications before substitution.
What are the specifications of 4820-00-403-1129?
Key specifications for 4820-00-403-1129: Material: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL. 1 specification is documented in the U.S. Government catalog.
Is NSN 4820-00-403-1129 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.