NSN 4820-01-411-0678 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-411-0678. Manufacturer of record part number: 6519099.
Material Document and Classification: ASTM A576,GR 1035 ASSN STD SINGLE MATERIAL RESPONSE
Features Provided: STEPPED
Valve Design Control Activity: 53711
Material: STEEL
2 manufacturer part numbers on file
Manufacturer of record: Naval Sea Systems Command
Identification
NSN: 4820-01-411-0678
NIIN: 014110678
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 6519099
Manufacturer: Naval Sea Systems Command
General Description
The Piston,valve, cataloged under National Stock Number 4820-01-411-0678, 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 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-01-411-0678
Primary Part Number
6519099
Item Name
Piston,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Naval Sea Systems Command
Status
ACTIVE
Outside Diameter
2.247 INCHES NOMINAL IN
Material Document and Classification
ASTM A576,GR 1035 ASSN STD SINGLE MATERIAL RESPONSE
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4820-00-000-0097
4820-00-000-0097 · Item name not on file
4820-00-001-0010
VALVE,ROTARY,SELECTOR
4820-00-001-0020
4820-00-001-0020 · Item name not on file
4820-00-001-0021
4820-00-001-0021 · Item name not on file
4820-00-001-0032
4820-00-001-0032 · Item name not on file
4820-00-001-0037
VALVE,SAFETY RELIEF
4820-00-001-0042
4820-00-001-0042 · Item name not on file
4820-00-001-1230
4820-00-001-1230 · Item name not on file
Frequently Asked Questions
What is NSN 4820-01-411-0678?
NSN 4820-01-411-0678 is a Piston,valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-411-0678?
NSN 4820-01-411-0678 has 2 manufacturer part numbers on file: 6519083 PIECE 10 (Naval Sea Systems Command), 6519099 (Naval Sea Systems Command).
What are the specifications of 6519099?
Key specifications for 6519099: Outside Diameter: 2.247 INCHES NOMINAL IN; Material Document and Classification: ASTM A576,GR 1035 ASSN STD SINGLE MATERIAL RESPONSE; Overall Length: 8.625 INCHES NOMINAL IN; Features Provided: STEPPED. 5 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-411-0678 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.