NSN 4820-01-117-6443 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-117-6443. Manufacturer of record part number: 845-4558709 ITEM 7.
General Characteristics Item Description: RING NUT STEEL
1 manufacturer part number on file
Manufacturer of record: Naval Sea Systems Command
Identification
NSN: 4820-01-117-6443
NIIN: 011176443
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 845-4558709 ITEM 7
Manufacturer: Naval Sea Systems Command
General Description
The Wrench,stem,valve, cataloged under National Stock Number 4820-01-117-6443, 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 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 9 items share a part number with this NSN in the catalog (possible match — not a government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
4820-01-117-6443
Primary Part Number
845-4558709 ITEM 7
Item Name
Wrench,stem,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Naval Sea Systems Command
Status
ACTIVE
General Characteristics Item Description
RING NUT STEEL
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 Items9
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5310-01-121-6400845-4687720 ITEM 14POSSIBLE MATCH
WRENCH,STEM NUT
Possible match (shared part number)Naval Ship Systems Command
4820-01-122-82362640-682-05 ITEM 35POSSIBLE MATCH
CONNECTOR,BALL PULLER
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-128-14162640-682-06 ITEM 36POSSIBLE MATCH
CONNECTOR,BALL PULLER
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-128-23172640-682-05 ITEM 43POSSIBLE MATCH
FINGER,RETRACTOR,VALVE BALL
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-128-30112640682-06 ITEM 23POSSIBLE MATCH
ADAPTER,BALL,PULLER
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-135-76134687720 ITEM 48POSSIBLE MATCH
CAP,VALVE
Possible match (shared part number)Naval Ship Systems Command
4820-01-138-30792640-682-06 ITEM 33POSSIBLE MATCH
CAP,VALVE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-148-2856845-4687720 ITEM 32POSSIBLE MATCH
LEVER,DISK PULLER
Possible match (shared part number)Naval Ship Systems Command
4820-01-149-34142640-682-06 ITEM 13POSSIBLE MATCH
WRENCH
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
NSN 4820-01-117-6443 is a Wrench,stem,valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-117-6443?
NSN 4820-01-117-6443 has 1 manufacturer part number on file: 845-4558709 ITEM 7 (Naval Sea Systems Command).
What NSN replaces 4820-01-117-6443?
9 possible matches (shared part number, not a government interchangeability claim): 5310-01-121-6400, 4820-01-122-8236, 4820-01-128-1416. Verify interchangeability with system specifications before substitution.
What are the specifications of 845-4558709 ITEM 7?
Key specifications for 845-4558709 ITEM 7: General Characteristics Item Description: RING NUT STEEL. 1 specification is documented in the U.S. Government catalog.
Is NSN 4820-01-117-6443 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.