NSN 4820-00-898-8627 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-898-8627. Manufacturer of record part number: 418829.
Also searched as4820-00-898-8627 ·
4820008988627 ·
NIIN 008988627 ·
00-898-8627 ·
FSC 4820 Valves, Nonpowered · CAGE 77445 · 418829
Body Outside Diameter: 1.230 INCHES MINIMUM AND 1.234 INCHES MAXIMUM IN
Hardness Rating: 35.000 ROCKWELL C MINIMUM AND 40.000 ROCKWELL C MAXIMUM OVERALL
Under Flange Height: 1.290 INCHES MINIMUM AND 1.350 INCHES MAXIMUM IN
Material: STEEL OVERALL
Identification
NSN: 4820-00-898-8627
NIIN: 008988627
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 418829
Manufacturer: Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
General Description
The Seat,valve, cataloged under National Stock Number 4820-00-898-8627, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-00-898-8627
Primary Part Number
418829
Item Name
Seat,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
Status
ACTIVE
Flange Seat to Disk End Height
0.330 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN
Flange Diameter
2.494 INCHES MINIMUM AND 2.496 INCHES MAXIMUM IN
FSC Application Data
OIL FILTER VALVE,ACFT ENGINE
Body Outside Diameter
1.230 INCHES MINIMUM AND 1.234 INCHES MAXIMUM IN
Hardness Rating
35.000 ROCKWELL C MINIMUM AND 40.000 ROCKWELL C MAXIMUM OVERALL
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
Reference documents
Reference
Meaning
418829
5/9Secondary reference
Cecilware Corporation
No interchangeability data on file.
Other items in FSC 4820 — Valves, Nonpowered
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 4820-00-898-8627?
NSN 4820-00-898-8627 is a Seat,valve, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-00-898-8627?
NSN 4820-00-898-8627 has 3 manufacturer part numbers on file: 418829 (Arrow Pneumatics Inc), 418829 (Royson Engineering Company), 418829 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
What are the specifications of 418829?
Key specifications for 418829: Flange Seat to Disk End Height: 0.330 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN; Flange Diameter: 2.494 INCHES MINIMUM AND 2.496 INCHES MAXIMUM IN; FSC Application Data: OIL FILTER VALVE,ACFT ENGINE; Body Outside Diameter: 1.230 INCHES MINIMUM AND 1.234 INCHES MAXIMUM IN. 8 specifications are documented in the U.S. Government catalog.
Is NSN 4820-00-898-8627 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.