PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21399Milspec Plug

Elliott Machine Works Inc · NSN 4820-01-583-7788 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-583-7788 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-583-7788. Primary manufacturer part number: 21399.
Features
  • Milspec Plug — FSC 4820
  • 1 verified cross-reference
  • Primary manufacturer: Elliott Machine Works Inc
Applications
  • Flow control in piping systems
  • Water treatment infrastructure
  • Industrial process control
General Description

The Milspec Plug, cataloged under National Stock Number 4820-01-583-7788, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Elliott Machine Works Inc. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-583-7788
Primary Part Number21399
Item NameMilspec Plug
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerElliott Machine Works Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5998-00-003-6115PM21399 INTERCHANGEABLE
Extender Card,electronic Test
Mason Electric Co. Dba Mason Controls
5110-00-083-004221-399 INTERCHANGEABLE
Rasp,hand
Stanley Tools Div of Stanley Works
4730-00-142-2010SAE-J1508 TYPE B SIZE 79 INTERCHANGEABLE
Clamp,hose
Sae International Dba Sae International
5306-00-151-1723 INTERCHANGEABLE
Bolt,machine
2990-00-846-29421551 INTERCHANGEABLE
Muffler,exhaust
Arvin Industries Inc
3030-01-053-13407905629-00 INTERCHANGEABLE
Belt,flat
L3 Technologies, Inc. Dba Communication Systems-West Div Communication Systems-West
5950-01-202-304521399 INTERCHANGEABLE
Transformer,power
Robert M. Hadley Company, Inc.
6140-01-240-9700021399-000 INTERCHANGEABLE
Thermostat,battery Assembly
Saft America Inc. Dba Tadiran Batteries Div Aviation Division
Cross-Reference Index
Part NumberManufacturer
21399 PRIMARY Elliott Machine Works Inc (USA)
Related Parts
5998-00-003-6115INTERCHANGEABLE
EXTENDER CARD,ELECTRONIC TEST
PM21399
5110-00-083-0042INTERCHANGEABLE
RASP,HAND
21-399
4730-00-142-2010INTERCHANGEABLE
CLAMP,HOSE
SAE-J1508 TYPE B SIZE 79
5306-00-151-1723INTERCHANGEABLE
BOLT,MACHINE
2990-00-846-2942INTERCHANGEABLE
MUFFLER,EXHAUST
1551
3030-01-053-1340INTERCHANGEABLE
BELT,FLAT
7905629-00
5950-01-202-3045INTERCHANGEABLE
TRANSFORMER,POWER
21399
6140-01-240-9700INTERCHANGEABLE
THERMOSTAT,BATTERY ASSEMBLY
021399-000

Frequently Asked Questions

What is NSN 4820-01-583-7788?

NSN 4820-01-583-7788 is a Milspec Plug, manufactured by Elliott Machine Works Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-583-7788?

NSN 4820-01-583-7788 has 1 cross-referenced part number: 21399 (Elliott Machine Works Inc).

What NSN replaces 4820-01-583-7788?

There are 8 known substitutes for 4820-01-583-7788: 5998-00-003-6115, 5110-00-083-0042, 4730-00-142-2010 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21399?

Key specifications for 21399: End Item Identification: 4930-01-549-7112; LUBRICATING UNIT,POWER OPERATED. 1 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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