PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B2021Retainer,disk,valve

Dante Valve Company · NSN 4820-01-407-4264 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-407-4264 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-407-4264. Primary manufacturer part number: B2021.
Features
  • Retainer,disk,valve — FSC 4820
  • 5 verified cross-references
  • Primary manufacturer: Dante Valve Company
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Retainer,disk,valve, cataloged under National Stock Number 4820-01-407-4264, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Dante Valve Company. This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameRetainer,disk,valve
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersDanco Valve Company (CAGE 65079); Dante Valve Company (CAGE 5P967)
Technical Specifications
ParameterValue
NSN4820-01-407-4264
Primary Part NumberB2021
Item NameRetainer,disk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerDante Valve Company
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5330-00-202-3665A314088 INTERCHANGEABLE
Gasket
Naval Ship Systems Command
3110-00-554-3459 INTERCHANGEABLE
Bearing,ball,annular
3120-00-813-7541 INTERCHANGEABLE
Bearing,sleeve
5325-01-044-3489B2021 INTERCHANGEABLE
Ring,retaining
Naval Inventory Control Point Mechanicsburg
4730-01-061-1970B-202-1 INTERCHANGEABLE
Nut,tube Coupling
Swagelok Co
5950-01-250-8466646-6782-001 INTERCHANGEABLE
Coil Assembly,radio Frequency
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
5325-01-370-2404 INTERCHANGEABLE
Ring,retaining
7021-01-495-4686 INTERCHANGEABLE
Computer Subassembly
Cross-Reference Index
Part NumberManufacturer
D2000 REV-K ITEM 10 Danco Valve Company (USA)
D2000 REV-K ITEM 10 Dante Valve Company (USA)
D2000 Danco Valve Company (USA)
B2021 Danco Valve Company (USA)
B2021 PRIMARY Dante Valve Company (USA)
Related Parts
5330-00-202-3665INTERCHANGEABLE
GASKET
A314088
3110-00-554-3459INTERCHANGEABLE
BEARING,BALL,ANNULAR
3120-00-813-7541INTERCHANGEABLE
BEARING,SLEEVE
5325-01-044-3489INTERCHANGEABLE
RING,RETAINING
B2021
4730-01-061-1970INTERCHANGEABLE
NUT,TUBE COUPLING
B-202-1
5950-01-250-8466INTERCHANGEABLE
COIL ASSEMBLY,RADIO FREQUENCY
646-6782-001
5325-01-370-2404INTERCHANGEABLE
RING,RETAINING
7021-01-495-4686INTERCHANGEABLE
COMPUTER SUBASSEMBLY

Frequently Asked Questions

What is NSN 4820-01-407-4264?

NSN 4820-01-407-4264 is a Retainer,disk,valve, manufactured by Dante Valve Company, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-407-4264?

NSN 4820-01-407-4264 has 5 cross-referenced part numbers: D2000 REV-K ITEM 10 (Danco Valve Company), D2000 REV-K ITEM 10 (Dante Valve Company), D2000 (Danco Valve Company), B2021 (Danco Valve Company), B2021 (Dante Valve Company).

What NSN replaces 4820-01-407-4264?

There are 8 known substitutes for 4820-01-407-4264: 5330-00-202-3665, 3110-00-554-3459, 3120-00-813-7541 and 5 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com