NSN 4820-01-516-7017 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-516-7017. Manufacturer of record part number: 845-7108102-A-007.
Body Outside Diameter: 5.963 INCHES MINIMUM AND 5.971 INCHES MAXIMUM IN
Style Designator: PLAIN
Body Inside Diameter: 3.940 INCHES NOMINAL IN
Material: PLASTIC SEAT
Seating Surface Shape: RADIAL
1 manufacturer part number on file
Manufacturer of record: Naval Sea Systems Command
Identification
NSN: 4820-01-516-7017
NIIN: 015167017
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 845-7108102-A-007
Manufacturer: Naval Sea Systems Command
General Description
The Seat,valve, cataloged under National Stock Number 4820-01-516-7017, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 5 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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
4820-01-516-7017
Primary Part Number
845-7108102-A-007
Item Name
Seat,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Naval Sea Systems Command
Status
ACTIVE
Body Outside Diameter
5.963 INCHES MINIMUM AND 5.971 INCHES MAXIMUM IN
Style Designator
PLAIN
Body Inside Diameter
3.940 INCHES NOMINAL IN
Material
PLASTIC SEAT
Seating Surface Shape
RADIAL
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 Items6
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5310-01-517-3596845-7108102-A-013POSSIBLE MATCH
NUT,PLAIN,ROUND
Possible match (shared part number)Naval Sea Systems Command
4820-01-520-64497108102-OA-176POSSIBLE MATCH
INDICATOR,VALVE OPENING
Possible match (shared part number)Naval Sea Systems Command
4820-01-520-65477108102-C-042POSSIBLE MATCH
STEM,FLUID VALVE
Possible match (shared part number)Naval Sea Systems Command
4820-01-549-9269POSSIBLE MATCH
SEAT,VALVE
Possible match (shared part number)
4820-01-550-21457550479-7108102-TAPOSSIBLE MATCH
TOOL ASSEMBLY,BALL VALVE
Possible match (shared part number)Naval Inventory Control Point Mechanicsburg
NSN 4820-01-516-7017 is a Seat,valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-516-7017?
NSN 4820-01-516-7017 has 1 manufacturer part number on file: 845-7108102-A-007 (Naval Sea Systems Command).
What NSN replaces 4820-01-516-7017?
6 possible matches (shared part number, not a government interchangeability claim): 5310-01-517-3596, 4820-01-520-6449, 4820-01-520-6547. Verify interchangeability with system specifications before substitution.
What are the specifications of 845-7108102-A-007?
Key specifications for 845-7108102-A-007: Overall Height: 0.748 INCHES NOMINAL IN; Body Outside Diameter: 5.963 INCHES MINIMUM AND 5.971 INCHES MAXIMUM IN; Style Designator: PLAIN; Body Inside Diameter: 3.940 INCHES NOMINAL IN. 5 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-516-7017 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.