NSN 4820-01-202-6339 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-202-6339. Manufacturer of record part number: 755936.
Flange Seat to Disk End Height: 0.335 INCHES NOMINAL IN
Flange Diameter: 2.492 INCHES NOMINAL IN
Body Outside Diameter: 1.2335 INCHES NOMINAL IN
Hardness Rating: 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
Criticality Code Justification: FEAT
Style Designator: PLAIN FLANGED
Body Inside Diameter: 0.246 INCHES NOMINAL IN
Identification
NSN: 4820-01-202-6339
NIIN: 012026339
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 755936
Manufacturer: Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
General Description
The Seat,valve, cataloged under National Stock Number 4820-01-202-6339, 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 11 specifications, cited from the U.S. Government catalog. The record lists 5 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
4820-01-202-6339
Primary Part Number
755936
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
0.335 INCHES NOMINAL IN
Flange Diameter
2.492 INCHES NOMINAL IN
Body Outside Diameter
1.2335 INCHES NOMINAL IN
Hardness Rating
35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
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 4820-01-202-6339?
NSN 4820-01-202-6339 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 4820-01-202-6339?
NSN 4820-01-202-6339 has 5 manufacturer part numbers on file: 755936 (Enjet Aero Bloomfield, Llc), 755936 (Lewis Machine, Llc), 755936 (Parts Life Inc), 7559367 (Electro-Methods, L.p.), 755936 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
What are the specifications of 755936?
Key specifications for 755936: Flange Seat to Disk End Height: 0.335 INCHES NOMINAL IN; Flange Diameter: 2.492 INCHES NOMINAL IN; Body Outside Diameter: 1.2335 INCHES NOMINAL IN; Hardness Rating: 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL. 11 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-202-6339 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.