PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

300660Tube Head Assembly

Illinois Tool Works, Inc. Div Magnaflux · NSN 6635-01-057-2173 · FSC 6635 · No Item Name Available
Verified by PartsTable
NSN 6635-01-057-2173 — this item is cataloged by the U.S. Government under National Stock Number 6635-01-057-2173. Primary manufacturer part number: 300660.
Features
  • Tube Head Assembly — FSC 6635
  • General Characteristics Item Description: 25.375 IN. LG IN
  • 1 verified cross-reference
  • Primary manufacturer: Illinois Tool Works, Inc. Div Magnaflux
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
General Description

The Tube Head Assembly, cataloged under National Stock Number 6635-01-057-2173, is classified within Federal Supply Class 6635 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Illinois Tool Works, Inc. Div Magnaflux. 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6635-01-057-2173
Primary Part Number300660
Item NameTube Head Assembly
FSC / FSG6635 / 66 — No Item Name Available
ManufacturerIllinois Tool Works, Inc. Div Magnaflux
StatusACTIVE
General Characteristics Item Description25.375 IN. LG IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4720-01-252-84272867945-1 INTERCHANGEABLE
Hose,nonmetallic
Lockheed Martin Corporation Div Rms - Manassas
2540-01-590-8741300660 INTERCHANGEABLE
Cushion,seat Back,vehicular
Bentley's Mfg Inc Dba Bentley's Boat Tops & Upholstery
4730-01-699-1972300660 INTERCHANGEABLE
Shield,safety,pipe Flange
Heil Trailer International Llc
Cross-Reference Index
Part NumberManufacturer
300660 Illinois Tool Works, Inc. Div Magnaflux (USA)
Related Parts
4720-01-252-8427INTERCHANGEABLE
HOSE,NONMETALLIC
2867945-1
2540-01-590-8741INTERCHANGEABLE
CUSHION,SEAT BACK,VEHICULAR
300660
4730-01-699-1972INTERCHANGEABLE
SHIELD,SAFETY,PIPE FLANGE
300660

Frequently Asked Questions

What is NSN 6635-01-057-2173?

NSN 6635-01-057-2173 is a Tube Head Assembly, manufactured by Illinois Tool Works, Inc. Div Magnaflux, classified under FSC 6635 (No Item Name Available). Status: active.

What are the part numbers for NSN 6635-01-057-2173?

NSN 6635-01-057-2173 has 1 cross-referenced part number: 300660 (Illinois Tool Works, Inc. Div Magnaflux).

What NSN replaces 6635-01-057-2173?

There are 3 known substitutes for 6635-01-057-2173: 4720-01-252-8427, 2540-01-590-8741, 4730-01-699-1972. Verify interchangeability with system specifications before substitution.

What are the specifications of 300660?

Key specifications for 300660: General Characteristics Item Description: 25.375 IN. LG IN. 1 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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