PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

T166Hose Assembly,nonmetallic

W S Darley & Co · NSN 4720-01-547-0778 · FSC 4720 · No Item Name Available
Verified by PartsTable
NSN 4720-01-547-0778 — this item is cataloged by the U.S. Government under National Stock Number 4720-01-547-0778. Primary manufacturer part number: T166.
Features
  • Hose Assembly,nonmetallic — FSC 4720
  • Inside Surface Condition: SMOOTH
  • 1 verified cross-reference
  • Primary manufacturer: W S Darley & Co
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
General Description

The Hose Assembly,nonmetallic, cataloged under National Stock Number 4720-01-547-0778, is classified within Federal Supply Class 4720 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is W S Darley & Co. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference 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.

Technical Specifications
ParameterValue
NSN4720-01-547-0778
Primary Part NumberT166
Item NameHose Assembly,nonmetallic
FSC / FSG4720 / 47 — No Item Name Available
ManufacturerW S Darley & Co
StatusACTIVE
Inside Surface ConditionSMOOTH
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5950-00-518-2089T166 INTERCHANGEABLE
Reactor
Electronic Transformer Corp Div Electronic Transformer Corporation
5845-00-789-806644581 INTERCHANGEABLE
One Shot
L3harris Technologies, Inc. Div Space and Airborne Systems
3010-01-056-9888402-.250 X .250 INTERCHANGEABLE
Coupling,shaft,flexible
Naugler Engineering Inc
5950-01-347-0132T16-6 INTERCHANGEABLE
Core,electromagnetic Component
Micrometals Inc
Cross-Reference Index
Part NumberManufacturer
T166 PRIMARY W S Darley & Co (USA)
Related Parts
5950-00-518-2089INTERCHANGEABLE
REACTOR
T166
5845-00-789-8066INTERCHANGEABLE
ONE SHOT
44581
3010-01-056-9888INTERCHANGEABLE
COUPLING,SHAFT,FLEXIBLE
402-.250 X .250
5950-01-347-0132INTERCHANGEABLE
CORE,ELECTROMAGNETIC COMPONENT
T16-6

Frequently Asked Questions

What is NSN 4720-01-547-0778?

NSN 4720-01-547-0778 is a Hose Assembly,nonmetallic, manufactured by W S Darley & Co, classified under FSC 4720 (No Item Name Available). Status: active.

What are the part numbers for NSN 4720-01-547-0778?

NSN 4720-01-547-0778 has 1 cross-referenced part number: T166 (W S Darley & Co).

What NSN replaces 4720-01-547-0778?

There are 4 known substitutes for 4720-01-547-0778: 5950-00-518-2089, 5845-00-789-8066, 3010-01-056-9888 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of T166?

Key specifications for T166: Inside Surface Condition: SMOOTH; Special Features: HARD SUCTION HOSE, 10 FOOT LENGTH, 3 INCH DIAMETER, SPIRAL WIRE HELIX, NYLON REINFORCEMENT PILES, BLACK, AGE RESISTANT IN. 2 total characteristics are documented in the Federal Logistics Information System.

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