NSN 4820-01-061-1617 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-061-1617. Manufacturer of record part number: 501-4675661 ITEM 16.
Nearby stock numbers← 4820-01-061-1612 Nut and Bolt Assembly, Regulator
·
4820-01-061-1618 Manifold Assembly, Four Valve →
4820-01-061-1617 — Valves, Nonpowered
Features
Retainer,stem,valve — FSC 4820
General Characteristics Item Description: NICKEL ALUMINUM BRONZE,0.625 IN. OD IN
1 manufacturer part number on file
Manufacturer of record: Naval Sea Systems Command
Identification
NSN: 4820-01-061-1617
NIIN: 010611617
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 501-4675661 ITEM 16
Manufacturer: Naval Sea Systems Command
General Description
The Retainer,stem,valve, cataloged under National Stock Number 4820-01-061-1617, 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government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
4820-01-061-1617
Primary Part Number
501-4675661 ITEM 16
Item Name
Retainer,stem,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Naval Sea Systems Command
Status
ACTIVE
General Characteristics Item Description
NICKEL ALUMINUM BRONZE,0.625 IN. OD IN
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 Items8
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4820-01-061-16744675661-0015POSSIBLE MATCH
STEM,NEEDLE VALVE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-093-086987643-650B ITEM 17POSSIBLE MATCH
PLUG,ROTARY,VALVE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4820-01-123-176587643-6503 ITEM2POSSIBLE MATCH
DISK,VALVE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
3040-01-191-8373501-4675661 ITEM 8POSSIBLE MATCH
SHAFT,SHOULDERED
Possible match (shared part number)Naval Ship Systems Command
4820-01-192-04804675661-0003POSSIBLE MATCH
PISTON,VALVE
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
5340-01-210-3202501-4675661 ITEM 13POSSIBLE MATCH
BRACKET,ANGLE
Possible match (shared part number)Naval Sea Systems Command
4820-01-210-6917501-4675661 ITEM 27POSSIBLE MATCH
SEAT,VALVE
Possible match (shared part number)Naval Ship Systems Command
4820-01-220-5758501-4675661 ITEM 26POSSIBLE MATCH
PLATE,LOCKING,VALVE
Possible match (shared part number)Naval Ship Systems Command
NSN 4820-01-061-1617 is a Retainer,stem,valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-061-1617?
NSN 4820-01-061-1617 has 1 manufacturer part number on file: 501-4675661 ITEM 16 (Naval Sea Systems Command).
What NSN replaces 4820-01-061-1617?
8 possible matches (shared part number, not a government interchangeability claim): 4820-01-061-1674, 4820-01-093-0869, 4820-01-123-1765. Verify interchangeability with system specifications before substitution.
What are the specifications of 501-4675661 ITEM 16?
Key specifications for 501-4675661 ITEM 16: General Characteristics Item Description: NICKEL ALUMINUM BRONZE,0.625 IN. OD IN. 1 specification is documented in the U.S. Government catalog.
Is NSN 4820-01-061-1617 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.