PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

202752Seal,impeller,turbine

Honeywell International Inc. Div Aerospace - Torrance · NSN 1660-00-783-1139 · FSC 1660 · No Item Name Available
Verified by PartsTable
NSN 1660-00-783-1139 — this item is cataloged by the U.S. Government under National Stock Number 1660-00-783-1139. Primary manufacturer part number: 202752.
Features
  • Seal,impeller,turbine — FSC 1660
  • General Characteristics Item Description: STEEL CORROSION RESISTING,AMS&5643,17&4PH,5.280 IN. MIN 5.300 IN. MAX OD,1.502 IN. MIN 1.504 IN. MAX ID,0.298 IN. MIN 0.302 IN. MAX H,HARDNESS ROCKWELL C 47&40,5 HOLES EQUALLY SPACED 2.313 IN. MIN 2.323 IN. MAX 0.169 IN. MIN 0.174 IN. MAX DIA,5 HOLES EQUALLY SPACED 2.856 IN. MIN 2.876 IN. MAX 0.195 IN. MIN 0.200 IN. MAX DIA IN
  • FSC Application Data: HEAT AND VENT SYSTEM,AIR CONDITIONING,AIRCRAFT
  • 2 verified cross-references
  • Primary manufacturer: Honeywell International Inc. Div Aerospace - Torrance
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The Seal,impeller,turbine, cataloged under National Stock Number 1660-00-783-1139, is classified within Federal Supply Class 1660 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is Honeywell International Inc. Div Aerospace - Torrance. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1660-00-783-1139
Primary Part Number202752
Item NameSeal,impeller,turbine
FSC / FSG1660 / 16 — No Item Name Available
ManufacturerHoneywell International Inc. Div Aerospace - Torrance
StatusACTIVE
General Characteristics Item DescriptionSTEEL CORROSION RESISTING,AMS&5643,17&4PH,5.280 IN. MIN 5.300 IN. MAX OD,1.502 IN. MIN 1.504 IN. MAX ID,0.298 IN. MIN 0.302 IN. MAX H,HARDNESS ROCKWELL C 47&40,5 HOLES EQUALLY SPACED 2.313 IN. MIN 2.323 IN. MAX 0.169 IN. MIN 0.174 IN. MAX DIA,5 HOLES EQUALLY SPACED 2.856 IN. MIN 2.876 IN. MAX 0.195 IN. MIN 0.200 IN. MAX DIA IN
FSC Application DataHEAT AND VENT SYSTEM,AIR CONDITIONING,AIRCRAFT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
1650-00-604-660420275-4 INTERCHANGEABLE
Bracket,overspeed Trip Mounting
Triumph Thermal Systems - Maryland, Inc.
4140-01-191-4886 INTERCHANGEABLE
Impeller,fan,axial
4730-01-596-1504202752 INTERCHANGEABLE
Elbow,pipe
G R Mfg
Cross-Reference Index
Part NumberManufacturer
202752 Alliedsignal Inc Dba Allied-Signal Aerospace Co (USA)
202752 PRIMARY Honeywell International Inc. Div Aerospace - Torrance (USA)
Related Parts
1650-00-604-6604INTERCHANGEABLE
BRACKET,OVERSPEED TRIP MOUNTING
20275-4
4140-01-191-4886INTERCHANGEABLE
IMPELLER,FAN,AXIAL
4730-01-596-1504INTERCHANGEABLE
ELBOW,PIPE
202752

Frequently Asked Questions

What is NSN 1660-00-783-1139?

NSN 1660-00-783-1139 is a Seal,impeller,turbine, manufactured by Honeywell International Inc. Div Aerospace - Torrance, classified under FSC 1660 (No Item Name Available). Status: active.

What are the part numbers for NSN 1660-00-783-1139?

NSN 1660-00-783-1139 has 2 cross-referenced part numbers: 202752 (Alliedsignal Inc Dba Allied-Signal Aerospace Co), 202752 (Honeywell International Inc. Div Aerospace - Torrance).

What NSN replaces 1660-00-783-1139?

There are 3 known substitutes for 1660-00-783-1139: 1650-00-604-6604, 4140-01-191-4886, 4730-01-596-1504. Verify interchangeability with system specifications before substitution.

What are the specifications of 202752?

Key specifications for 202752: General Characteristics Item Description: STEEL CORROSION RESISTING,AMS&5643,17&4PH,5.280 IN. MIN 5.300 IN. MAX OD,1.502 IN. MIN 1.504 IN. MAX ID,0.298 IN. MIN 0.302 IN. MAX H,HARDNESS ROCKWELL C 47&40,5 HOLES EQUALLY SPACED 2.313 IN. MIN 2.323 IN. MAX 0.169 IN. MIN 0.174 IN. MAX DIA,5 HOLES EQUALLY SPACED 2.856 IN. MIN 2.876 IN. MAX 0.195 IN. MIN 0.200 IN. MAX DIA IN; FSC Application Data: HEAT AND VENT SYSTEM,AIR CONDITIONING,AIRCRAFT. 2 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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