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173978 — SUPPORT ASSEMBLY,DUCT

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

173978: SUPPORT ASSEMBLY,DUCT.

The SUPPORT ASSEMBLY,DUCT is a the manufacturer industrial component. Key specifications include end_item_identification: TELETYPE AND FACSIMILE EQUIPMENT. This part is cataloged in the U.S.

Government catalog under NSN 1660-00-791-4147, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
173978
NSN: 1660-00-791-4147
NIINs: 007914147, 008565335
FSC: 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
CAGE: 70210 — HONEYWELL INTERNATIONAL INC. DIV AEROSPACE - TORRANCE (USA)
SPECIFICATIONS
end_item_identificationTELETYPE AND FACSIMILE EQUIPMENT
NSN1660-00-791-4147
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SUPPORT ASSEMBLY,DUCT TITLE COMPONENT PN 173978 MFR SUPPORT ASSEMBLY,DUCT
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: CRES MIL-S-6721 TY 321;0.050 IN. ARM 0.032 IN. PAD MATERIAL THK;C/O ARM AND PAD WELDED TOGETHER;ONE 0.220 IN. MIN 0.225 IN. MAX DIA HOLE LOCATED IN ARM IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONCRES MIL-S-6721 TY 321;0.050 IN. ARM 0.032 IN. PAD MATERIAL THK;C/O ARM AND PAD WELDED TOGETHER;ONE 0.220 IN. MIN 0.225 IN. MAX DIA HOLE LOCATED IN ARM IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 173978?
173978 is a SUPPORT ASSEMBLY,DUCT.
What is the NSN for 173978?
173978 is cataloged in the U.S. Government catalog under NSN 1660-00-791-4147. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.