NSN 4820-01-457-3322 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-457-3322. Manufacturer of record part number: 7213-MS-952-T.
Also searched as4820-01-457-3322 ·
4820014573322 ·
NIIN 014573322 ·
01-457-3322 ·
FSC 4820 Valves, Nonpowered · CAGE 5F573 · 7213-MS-952-T
General Characteristics Item Description: ONE BACKUP GROOVE W, EPR SEALING COMPOUND, EXT TYPE OF GLAND
1 manufacturer part number on file
Manufacturer of record: Greene Tweed & Co Inc
Identification
NSN: 4820-01-457-3322
NIIN: 014573322
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 7213-MS-952-T
Manufacturer: Greene Tweed & Co Inc
General Description
The Ring,valve Piston, cataloged under National Stock Number 4820-01-457-3322, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Greene Tweed & Co Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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
4820-01-457-3322
Primary Part Number
7213-MS-952-T
Item Name
Ring,valve Piston
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Greene Tweed & Co Inc
Status
ACTIVE
General Characteristics Item Description
ONE BACKUP GROOVE W, EPR SEALING COMPOUND, EXT TYPE OF GLAND
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
Related Parts in Valves
4820-00-000-0097
4820-00-000-0097 · Item name not on file
4820-00-001-0010
VALVE,ROTARY,SELECTOR
8171E-1/4HS2
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
D559A3M2
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 4820-01-457-3322?
NSN 4820-01-457-3322 is a Ring,valve Piston, manufactured by Greene Tweed & Co Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-457-3322?
NSN 4820-01-457-3322 has 1 manufacturer part number on file: 7213-MS-952-T (Greene Tweed & Co Inc).
What are the specifications of 7213-MS-952-T?
Key specifications for 7213-MS-952-T: General Characteristics Item Description: ONE BACKUP GROOVE W, EPR SEALING COMPOUND, EXT TYPE OF GLAND; End Item Identification: AIRCRAFT, B-2 BOMBER. 1 specification is documented in the U.S. Government catalog.
Is NSN 4820-01-457-3322 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.
What is the DEMIL code for NSN 4820-01-457-3322?
NSN 4820-01-457-3322 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.
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.