PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7901-3Diffuser,air,aircraft Heating an

Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace · NSN 1660-00-020-0191 · FSC 1660 · No Item Name Available
Verified by PartsTable
NSN 1660-00-020-0191 — this item is cataloged by the U.S. Government under National Stock Number 1660-00-020-0191. Primary manufacturer part number: 7901-3.
Features
  • Diffuser,air,aircraft Heating an — FSC 1660
  • 6 verified cross-references
  • Primary manufacturer: Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Diffuser,air,aircraft Heating an, cataloged under National Stock Number 1660-00-020-0191, is classified within Federal Supply Class 1660 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace. This item has 6 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts
Item NameDiffuser,air,aircraft Heating an
FSC / FSG1660 — No Item Name Available (FSG 16)
ManufacturersSargent Industries Inc Fowler Div (CAGE 23387); Sargent Industries Inc (CAGE 02858); Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (CAGE 78062)
Technical Specifications
ParameterValue
NSN1660-00-020-0191
Primary Part Number7901-3
Item NameDiffuser,air,aircraft Heating an
FSC / FSG1660 / 16 — No Item Name Available
ManufacturerSargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4820-00-097-03227901-8AF INTERCHANGEABLE
Cock,poppet Drain
Parker Hannifin Corporation Div Aerospace Group Headquarters
5999-00-196-2710 INTERCHANGEABLE
Clamp,electrical
5905-00-196-35967901 INTERCHANGEABLE
Resistor,fixed,wire Wound
Triplett (bluffton) Corporation Dba Lfe Instruments
5985-00-477-816527-512210-2 INTERCHANGEABLE
Dummy Load,electrical
General Dynamics Mission Systems, Inc.
5330-00-620-84696754506 INTERCHANGEABLE
Seal,plain Encased
General Motors Corp
5990-00-636-41520S01702 INTERCHANGEABLE
Synchro,transmitter
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5950-00-835-79767901 INTERCHANGEABLE
Transformer,power
Staco Energy Products Co Dba Staco Energy Products Co
2530-00-845-5876376494C91 INTERCHANGEABLE
Hub
Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/
5930-01-005-64707901 INTERCHANGEABLE
Switch,thermostatic
Elkay Mfg Co Water Cooler Div
2920-01-031-59777901 INTERCHANGEABLE
Sleeve,ignition Terminal
Borgwarner Pds (anderson), L.l.c.
Cross-Reference Index
Part NumberManufacturer
7901-5 Sargent Industries Inc Fowler Div (USA)
7901-3 Sargent Industries Inc (USA)
7901 Sargent Industries Inc (USA)
7901-3 PRIMARY Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
7901-5 Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
7901-5 Sargent Industries Inc (USA)
Related Parts
4820-00-097-0322INTERCHANGEABLE
COCK,POPPET DRAIN
7901-8AF
5999-00-196-2710INTERCHANGEABLE
CLAMP,ELECTRICAL
5905-00-196-3596INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
7901
5985-00-477-8165INTERCHANGEABLE
DUMMY LOAD,ELECTRICAL
27-512210-2
5330-00-620-8469INTERCHANGEABLE
SEAL,PLAIN ENCASED
6754506
5990-00-636-4152INTERCHANGEABLE
SYNCHRO,TRANSMITTER
0S01702
5950-00-835-7976INTERCHANGEABLE
TRANSFORMER,POWER
7901
2530-00-845-5876INTERCHANGEABLE
HUB
376494C91
5930-01-005-6470INTERCHANGEABLE
SWITCH,THERMOSTATIC
7901
2920-01-031-5977INTERCHANGEABLE
SLEEVE,IGNITION TERMINAL
7901
5962-01-118-0614INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
5962-01-123-6929INTERCHANGEABLE
MICROCIRCUIT,DIGITAL

Frequently Asked Questions

What is NSN 1660-00-020-0191?

NSN 1660-00-020-0191 is a Diffuser,air,aircraft Heating an, manufactured by Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace, classified under FSC 1660 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 1660-00-020-0191?

NSN 1660-00-020-0191 has 6 cross-referenced part numbers: 7901-5 (Sargent Industries Inc Fowler Div), 7901-3 (Sargent Industries Inc), 7901 (Sargent Industries Inc), 7901-3 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace), 7901-5 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace) and 1 more.

What NSN replaces 1660-00-020-0191?

There are 12 known substitutes for 1660-00-020-0191: 4820-00-097-0322, 5999-00-196-2710, 5905-00-196-3596 and 9 more. Verify interchangeability with system specifications before substitution.

Is NSN 1660-00-020-0191 still in active supply?

NSN 1660-00-020-0191 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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