PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4845Sleeve,seal Coupler

Flexco, Inc · NSN 1660-00-055-3444 · FSC 1660 · No Item Name Available
Verified by PartsTable
NSN 1660-00-055-3444 — this item is cataloged by the U.S. Government under National Stock Number 1660-00-055-3444. Primary manufacturer part number: 4845.
Features
  • Sleeve,seal Coupler — FSC 1660
  • 3 verified cross-references
  • Primary manufacturer: Flexco, Inc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The Sleeve,seal Coupler, cataloged under National Stock Number 1660-00-055-3444, is classified within Federal Supply Class 1660 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is Flexco, Inc. This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameSleeve,seal Coupler
FSC / FSG1660 — No Item Name Available (FSG 16)
ManufacturersAlliedsignal Inc Dba Allied-Signal Aerospace Co (CAGE 72599); Flexco, Inc (CAGE 99135); Honeywell International Inc. Div Aerospace - Torrance (CAGE 70210)
Technical Specifications
ParameterValue
NSN1660-00-055-3444
Primary Part Number4845
Item NameSleeve,seal Coupler
FSC / FSG1660 / 16 — No Item Name Available
ManufacturerFlexco, Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5905-00-270-6754 INTERCHANGEABLE
Resistor,fixed,wire Wound
5935-00-321-50554845 INTERCHANGEABLE
Jack Assy,telephone
Bradford Vibrators Co the
2805-00-350-49704845 INTERCHANGEABLE
Valve,poppet,engine
Eaton Corporation
5950-00-825-64405012B INTERCHANGEABLE
Coil,radio Frequency
North Hills Signal Processing Corp.
3040-00-977-3232 INTERCHANGEABLE
Bracket,eye,nonrotating Shaft
2540-01-302-35244845 INTERCHANGEABLE
Parts Kit,seat
H.o. Bostrom Company, Inc. Dba Ho Bostrom Co Inc
4320-01-498-51304845 INTERCHANGEABLE
Connector,fluid,pump
Amw Cuyuna Engine Co. Inc Dba Two Stroke International
6640-01-580-13964845 INTERCHANGEABLE
Pipette Tips 200UL
Corning Incorporated Dba Corning Incorporated
Cross-Reference Index
Part NumberManufacturer
682332 Alliedsignal Inc Dba Allied-Signal Aerospace Co (USA)
4845 PRIMARY Flexco, Inc (USA)
682332 Honeywell International Inc. Div Aerospace - Torrance (USA)
Related Parts
5905-00-270-6754INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
5935-00-321-5055INTERCHANGEABLE
JACK ASSY,TELEPHONE
4845
2805-00-350-4970INTERCHANGEABLE
VALVE,POPPET,ENGINE
4845
5950-00-825-6440INTERCHANGEABLE
COIL,RADIO FREQUENCY
5012B
3040-00-977-3232INTERCHANGEABLE
BRACKET,EYE,NONROTATING SHAFT
2540-01-302-3524INTERCHANGEABLE
PARTS KIT,SEAT
4845
4320-01-498-5130INTERCHANGEABLE
CONNECTOR,FLUID,PUMP
4845
6640-01-580-1396INTERCHANGEABLE
PIPETTE TIPS 200UL
4845

Frequently Asked Questions

What is NSN 1660-00-055-3444?

NSN 1660-00-055-3444 is a Sleeve,seal Coupler, manufactured by Flexco, Inc, classified under FSC 1660 (No Item Name Available). Status: active.

What are the part numbers for NSN 1660-00-055-3444?

NSN 1660-00-055-3444 has 3 cross-referenced part numbers: 682332 (Alliedsignal Inc Dba Allied-Signal Aerospace Co), 4845 (Flexco, Inc), 682332 (Honeywell International Inc. Div Aerospace - Torrance).

What NSN replaces 1660-00-055-3444?

There are 8 known substitutes for 1660-00-055-3444: 5905-00-270-6754, 5935-00-321-5055, 2805-00-350-4970 and 5 more. Verify interchangeability with system specifications before substitution.

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