PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

121615-1.25INPilot Assembly,valve

Aerco International, Inc. Dba Aerco International Inc · NSN 4820-01-179-6408 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-179-6408 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-179-6408. Primary manufacturer part number: 121615-1.25IN.
Features
  • Pilot Assembly,valve — FSC 4820
  • 2 verified cross-references
  • Primary manufacturer: Aerco International, Inc. Dba Aerco International Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Pilot Assembly,valve, cataloged under National Stock Number 4820-01-179-6408, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Aerco International, Inc. Dba Aerco International Inc. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NamePilot Assembly,valve
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersAerco International, Inc. Dba Aerco International Inc (CAGE 95368)
Technical Specifications
ParameterValue
NSN4820-01-179-6408
Primary Part Number121615-1.25IN
Item NamePilot Assembly,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerAerco International, Inc. Dba Aerco International Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5305-00-012-1615121615 INTERCHANGEABLE
Screw,cap,hexagon Head
Us Army Aviation and Missile Command
5310-01-096-6184 INTERCHANGEABLE
Washer,saddle
4820-01-178-8873121615 INTERCHANGEABLE
Parts Kit,pilot Control Valve
Aerco International, Inc. Dba Aerco International Inc
5998-01-423-2613121615 INTERCHANGEABLE
Electronic Components Assembly
Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit
Cross-Reference Index
Part NumberManufacturer
121615 Aerco International, Inc. Dba Aerco International Inc (USA)
121615-1.25IN PRIMARY Aerco International, Inc. Dba Aerco International Inc (USA)
Related Parts
5305-00-012-1615INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
121615
5310-01-096-6184INTERCHANGEABLE
WASHER,SADDLE
4820-01-178-8873INTERCHANGEABLE
PARTS KIT,PILOT CONTROL VALVE
121615
5998-01-423-2613INTERCHANGEABLE
ELECTRONIC COMPONENTS ASSEMBLY
121615

Frequently Asked Questions

What is NSN 4820-01-179-6408?

NSN 4820-01-179-6408 is a Pilot Assembly,valve, manufactured by Aerco International, Inc. Dba Aerco International Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-179-6408?

NSN 4820-01-179-6408 has 2 cross-referenced part numbers: 121615 (Aerco International, Inc. Dba Aerco International Inc), 121615-1.25IN (Aerco International, Inc. Dba Aerco International Inc).

What NSN replaces 4820-01-179-6408?

There are 4 known substitutes for 4820-01-179-6408: 5305-00-012-1615, 5310-01-096-6184, 4820-01-178-8873 and 1 more. Verify interchangeability with system specifications before substitution.

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