NSN 4820-01-090-6577 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-090-6577. Manufacturer of record part number: 1F879724092.
General Characteristics Item Description: STEEL;USED ON 6.000 IN. MANUAL OPERATED CONTROL VALVE IN
2 manufacturer part numbers on file
Manufacturer of record: Fisher Controls Co Inc
Identification
NSN: 4820-01-090-6577
NIIN: 010906577
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 1F879724092
Manufacturer: Fisher Controls Co Inc
General Description
The Gland,seat, cataloged under National Stock Number 4820-01-090-6577, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Fisher Controls Co Inc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government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
4820-01-090-6577
Primary Part Number
1F879724092
Item Name
Gland,seat
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Fisher Controls Co Inc
Status
ACTIVE
General Characteristics Item Description
STEEL;USED ON 6.000 IN. MANUAL OPERATED CONTROL VALVE 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 Items7
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4820-01-090-970720A3522X022POSSIBLE MATCH
TOWER CAGE,VALVE
Possible match (shared part number)Fisher Controls Co Inc
4820-01-090-97211E832838992POSSIBLE MATCH
DISK,INDICATOR,VALVE
Possible match (shared part number)Fisher Controls Co Inc
4820-01-091-28531E833438992POSSIBLE MATCH
TRAVEL INDICATOR SCALE
Possible match (shared part number)Fisher Controls Co Inc
4820-01-091-81201K5877X0032POSSIBLE MATCH
STEM,FLUID VALVE
Possible match (shared part number)Fisher Controls Co Inc
4820-01-121-19372DA3507X052POSSIBLE MATCH
PLUG,BALANCE
Possible match (shared part number)Fisher Controls Co Inc
4820-01-121-24501J873335072POSSIBLE MATCH
PACKING RING
Possible match (shared part number)Fisher Controls Co Inc
4820-01-333-127642A3444POSSIBLE MATCH
VALVE,PLUG
Possible match (shared part number)Fisher Controls Co Inc
NSN 4820-01-090-6577 is a Gland,seat, manufactured by Fisher Controls Co Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-090-6577?
NSN 4820-01-090-6577 has 2 manufacturer part numbers on file: 1F879724092 (Fisher Controls Co Inc), 42A3444 PIECE 9 (Fisher Controls Co Inc).
What NSN replaces 4820-01-090-6577?
7 possible matches (shared part number, not a government interchangeability claim): 4820-01-090-9707, 4820-01-090-9721, 4820-01-091-2853. Verify interchangeability with system specifications before substitution.
What are the specifications of 1F879724092?
Key specifications for 1F879724092: General Characteristics Item Description: STEEL;USED ON 6.000 IN. MANUAL OPERATED CONTROL VALVE IN. 1 specification is documented in the U.S. Government catalog.
Is NSN 4820-01-090-6577 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.