PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

23820Diffuser,air Supply

Air-Lock, Incorporated · NSN 4220-01-345-7824 · FSC 4220 · No Item Name Available
Verified by PartsTable
NSN 4220-01-345-7824 — this item is cataloged by the U.S. Government under National Stock Number 4220-01-345-7824. Primary manufacturer part number: 23820.
Features
  • Diffuser,air Supply — FSC 4220
  • Material: COPPER ALLOY
  • 1 verified cross-reference
  • Primary manufacturer: Air-Lock, Incorporated
Applications
  • Applications requiring Copper Alloy construction
General Description

The Diffuser,air Supply, cataloged under National Stock Number 4220-01-345-7824, is classified within Federal Supply Class 4220 (No Item Name Available) of the Fire Fighting, Rescue, and Safety Equipment group. The primary manufacturer of record is Air-Lock, Incorporated. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4220-01-345-7824
Primary Part Number23820
Item NameDiffuser,air Supply
FSC / FSG4220 / 42 — No Item Name Available
ManufacturerAir-Lock, Incorporated
StatusACTIVE
MaterialCOPPER ALLOY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5999-00-035-792523-820 INTERCHANGEABLE
Contact,electrical
Eaton Corp Opns & Technical Center
5940-00-150-42392382-0 INTERCHANGEABLE
Post,binding,electrical
Fluke Electronics Corp
5955-00-179-8114 INTERCHANGEABLE
Oscillator,noncrystal Controlled
5330-00-306-199523820 INTERCHANGEABLE
Seal,plain Encased
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
5930-00-386-852023820 INTERCHANGEABLE
Switch Section,rotary
Cts Corp Electromechanical Div
3040-01-230-898823820 INTERCHANGEABLE
Shaft,shouldered
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
2910-01-290-4373 INTERCHANGEABLE
Filter Element,fluid
1630-01-338-712423820 INTERCHANGEABLE
Rotor,disc Brake
Nasco Aircraft Brake, Inc. Dba Nasco Aircraft Brake Inc Div Nasco
4730-01-482-146328320.1 INTERCHANGEABLE
Strainer,sediment
Bunn-O-Matic Corporation Div Government Sales
5305-01-564-312123820 INTERCHANGEABLE
Screw,cap,socket Head
Fastenal Company Dba Fastenal Co
Cross-Reference Index
Part NumberManufacturer
23820 PRIMARY Air-Lock, Incorporated (USA)
Related Parts
5999-00-035-7925INTERCHANGEABLE
CONTACT,ELECTRICAL
23-820
5940-00-150-4239INTERCHANGEABLE
POST,BINDING,ELECTRICAL
2382-0
5955-00-179-8114INTERCHANGEABLE
OSCILLATOR,NONCRYSTAL CONTROLLED
5330-00-306-1995INTERCHANGEABLE
SEAL,PLAIN ENCASED
23820
5930-00-386-8520INTERCHANGEABLE
SWITCH SECTION,ROTARY
23820
3040-01-230-8988INTERCHANGEABLE
SHAFT,SHOULDERED
23820
2910-01-290-4373INTERCHANGEABLE
FILTER ELEMENT,FLUID
1630-01-338-7124INTERCHANGEABLE
ROTOR,DISC BRAKE
23820
4730-01-482-1463INTERCHANGEABLE
STRAINER,SEDIMENT
28320.1
5305-01-564-3121INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
23820
6810-01-587-4057INTERCHANGEABLE
COBALT CARBOXYLATE
23820
6515-01-590-4974INTERCHANGEABLE
HEAD,OTOSCOPE OPERATING
23820

Frequently Asked Questions

What is NSN 4220-01-345-7824?

NSN 4220-01-345-7824 is a Diffuser,air Supply, manufactured by Air-Lock, Incorporated, classified under FSC 4220 (No Item Name Available). Status: active.

What are the part numbers for NSN 4220-01-345-7824?

NSN 4220-01-345-7824 has 1 cross-referenced part number: 23820 (Air-Lock, Incorporated).

What NSN replaces 4220-01-345-7824?

There are 12 known substitutes for 4220-01-345-7824: 5999-00-035-7925, 5940-00-150-4239, 5955-00-179-8114 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 23820?

Key specifications for 23820: Material: COPPER ALLOY; End Item Identification: C130; Special Features: SIX 0.1285 DRILLED HOLES ON FLATS;THREAD TYPE IS NPSM. 3 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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