NSN 4820-01-367-4805 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-367-4805. Manufacturer of record part number: 801-6641010FNB-11.
The Head,valve, cataloged under National Stock Number 4820-01-367-4805, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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
4820-01-367-4805
Primary Part Number
801-6641010FNB-11
Item Name
Head,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Naval Sea Systems Command
Status
ACTIVE
Material
ALUMINUM
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 Items5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4820-01-367-4935801-6641010FNB-15POSSIBLE MATCH
VALVE,SAFETY RELIEF
Possible match (shared part number)Naval Sea Systems Command
3020-01-367-4954801-6641010FNB-05POSSIBLE MATCH
GEAR RACK
Possible match (shared part number)Naval Sea Systems Command
3020-01-367-4957801-6641010FNB-13POSSIBLE MATCH
GEAR,SPUR
Possible match (shared part number)Naval Sea Systems Command
3040-01-371-4359801-6641010 ITEM 8POSSIBLE MATCH
HEAD,LINEAR ACTUATING CYLINDER
Possible match (shared part number)Naval Sea Systems Command
3040-01-371-4360801-6641010 ITEM 9POSSIBLE MATCH
HEAD,LINEAR ACTUATING CYLINDER
Possible match (shared part number)Naval Sea Systems Command
NSN 4820-01-367-4805 is a Head,valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-367-4805?
NSN 4820-01-367-4805 has 1 manufacturer part number on file: 801-6641010FNB-11 (Naval Sea Systems Command).
What NSN replaces 4820-01-367-4805?
5 possible matches (shared part number, not a government interchangeability claim): 4820-01-367-4935, 3020-01-367-4954, 3020-01-367-4957. Verify interchangeability with system specifications before substitution.
What are the specifications of 801-6641010FNB-11?
Key specifications for 801-6641010FNB-11: Special Features: THD 1.875-12 UNF-2B PORT;5.500 IN. H,5.500 IN. W,0.250 IN. THK;4 MTG HOLES 0.781 IN. DIA IN; Material: ALUMINUM. 1 specification is documented in the U.S. Government catalog.
Is NSN 4820-01-367-4805 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.