The Retainer,seat,valve, cataloged under National Stock Number 4820-01-061-1300, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 11 items share a part number with this NSN in the catalog (possible match — not a government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
4820-01-061-1300
Item Name
Retainer,seat,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Status
ACTIVE
Outside Diameter
2.456 INCHES NOMINAL IN
Material Document and Classification
QQ-S-763, CLASS 304, COND A FED SPEC SINGLE MATERIAL RESPONSE
Specification/standard Data
96169-2641-809-40 MANUFACTURERS SPECIFICATION
Inside Diameter
1.997 INCHES NOMINAL IN
Valve Design Control Activity
96169
Material
STEEL CORROSION RESISTING
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 Items11
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4820-01-077-64852641-405-11 ITEM 29 1-4INPOSSIBLE MATCH
BALL SET,VALVE JACKING ASSEMBLY
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-130-86192641-405-11 ITEM 30 1-2INPOSSIBLE MATCH
RETAINER,SEAT,VALVE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-147-13942641-809-40 ASSY CPOSSIBLE MATCH
BALL SET,JACKING ASSEMBLY
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-199-57552641-809-40 ITEM 80POSSIBLE MATCH
ADAPTER,VALVE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-199-57562641-809-40 ITEM 81POSSIBLE MATCH
SOCKET,VALVE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
5330-01-389-2702POSSIBLE MATCH
RETAINER,PACKING
Possible match (shared part number)
5310-01-474-8822845-7285244 ITEM 56POSSIBLE MATCH
WASHER,FLAT
Possible match (shared part number)Naval Sea Systems Command
5310-01-474-8828POSSIBLE MATCH
WASHER,FLAT
Possible match (shared part number)
4820-01-482-50542641-809-40 ITEM 55POSSIBLE MATCH
RETAINER,SEAT,VALVE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
5360-01-598-4607POSSIBLE MATCH
SPRING,FLAT
Possible match (shared part number)
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
2641-809-40
D/9Drawing number reference only
U.S. Government activity
2641-809-40 ITEM 10
3/2Design control — primary reference
U.S. Government activity
2643-405-01 ITEM 55
5/2Secondary reference
U.S. Government activity
Related Parts
4820-01-077-6485POSSIBLE MATCH
BALL SET,VALVE JACKING ASSEMBLY
2641-405-11 ITEM 29 1-4IN
4820-01-130-8619POSSIBLE MATCH
RETAINER,SEAT,VALVE
2641-405-11 ITEM 30 1-2IN
4820-01-147-1394POSSIBLE MATCH
BALL SET,JACKING ASSEMBLY
2641-809-40 ASSY C
4820-01-199-5755POSSIBLE MATCH
ADAPTER,VALVE
2641-809-40 ITEM 80
4820-01-199-5756POSSIBLE MATCH
SOCKET,VALVE
2641-809-40 ITEM 81
5330-01-389-2702POSSIBLE MATCH
RETAINER,PACKING
5310-01-474-8822POSSIBLE MATCH
WASHER,FLAT
845-7285244 ITEM 56
5310-01-474-8828POSSIBLE MATCH
WASHER,FLAT
4820-01-482-5054POSSIBLE MATCH
RETAINER,SEAT,VALVE
2641-809-40 ITEM 55
5360-01-598-4607POSSIBLE MATCH
SPRING,FLAT
4820-01-633-8941POSSIBLE MATCH
RETAINER,SEAT,VALVE
Frequently Asked Questions
What is NSN 4820-01-061-1300?
NSN 4820-01-061-1300 is a Retainer,seat,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.
What NSN replaces 4820-01-061-1300?
11 possible matches (shared part number, not a government interchangeability claim): 4820-01-077-6485, 4820-01-130-8619, 4820-01-147-1394. Verify interchangeability with system specifications before substitution.
What are the specifications of 4820-01-061-1300?
Key specifications for 4820-01-061-1300: Outside Diameter: 2.456 INCHES NOMINAL IN; Material Document and Classification: QQ-S-763, CLASS 304, COND A FED SPEC SINGLE MATERIAL RESPONSE; Overall Length: 0.359 INCHES NOMINAL IN; Specification/standard Data: 96169-2641-809-40 MANUFACTURERS SPECIFICATION. 6 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-061-1300 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.