PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

61HD-8Inverted Nut,tube Coupling

Parker-Hannifin Corp Div Fluid System Connector Division · NSN 4730-00-677-3738 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-677-3738 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-677-3738. Primary manufacturer part number: 61HD-8.
Features
  • Inverted Nut,tube Coupling — FSC 4730
  • 11 verified cross-references
  • Primary manufacturer: Parker-Hannifin Corp Div Fluid System Connector Division
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Fluid conveyance
  • Hydraulic system plumbing
General Description

The Inverted Nut,tube Coupling, cataloged under National Stock Number 4730-00-677-3738, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Parker-Hannifin Corp Div Fluid System Connector Division. This item has 11 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts
Item NameInverted Nut,tube Coupling
FSC / FSG4730 — No Item Name Available (FSG 47)
ManufacturersKomatsu American Intl Co (CAGE 29510); Imperial (CAGE 30327); Dana Corp Weatherhead Div (CAGE 79470); Dana Corp Weatherhead Div Antwerp Plant (CAGE 01989); Parker-Hannifin Corp Div Fluid System Connector Division (CAGE 93061)
Technical Specifications
ParameterValue
NSN4730-00-677-3738
Primary Part Number61HD-8
Item NameInverted Nut,tube Coupling
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerParker-Hannifin Corp Div Fluid System Connector Division
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
5930-00-114-1722 INTERCHANGEABLE
Switch,thermostatic
5950-00-138-1250278-0375-010 INTERCHANGEABLE
Transformer,radio Frequency
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
4730-00-213-014500-7 INTERCHANGEABLE
Bucket Assembly
Armstrong International Inc Dba Armstrong Machine Works
2805-00-350-6409 INTERCHANGEABLE
Valve,poppet,engine
5950-00-501-2030278-0375-011 INTERCHANGEABLE
Transformer,radio Frequency
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
2530-00-589-8537 INTERCHANGEABLE
Cap,grease
1730-00-948-3530A260 INTERCHANGEABLE
Lock,rotor Blade Re
Marathonnorco Aerospace, Inc.
7220-01-034-4011 INTERCHANGEABLE
Carpet
3439-01-496-1069A-260 INTERCHANGEABLE
Holder,electrode,welding
Lenco Dba Nlc Inc
7025-01-530-7438A260 INTERCHANGEABLE
Disk Drive Unit
U S Dept of Transportation Federal Aviation Administration
Cross-Reference Index
Part NumberManufacturer
37288H Komatsu American Intl Co (USA)
81LB1-2IN Imperial (USA)
6100X8 Dana Corp Weatherhead Div (USA)
6100X8 Dana Corp Weatherhead Div Antwerp Plant (USA)
61HD-8 PRIMARY Parker-Hannifin Corp Div Fluid System Connector Division (USA)
A260 Eaton Corp Controls Div (USA)
8F8998 Caterpillar Inc Div Caterpillar Defense (USA)
37288H Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA)
37288H Navistar International Corporation Dba Navistar (USA)
37288H Navistar Intl Corp Truck Br Ohio Plant (USA)
181D1-2 Imperial (USA)
Related Parts
5930-00-114-1722INTERCHANGEABLE
SWITCH,THERMOSTATIC
5950-00-138-1250INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
278-0375-010
4730-00-213-0145INTERCHANGEABLE
BUCKET ASSEMBLY
00-7
2805-00-350-6409INTERCHANGEABLE
VALVE,POPPET,ENGINE
5950-00-501-2030INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
278-0375-011
2530-00-589-8537INTERCHANGEABLE
CAP,GREASE
1730-00-948-3530INTERCHANGEABLE
LOCK,ROTOR BLADE RE
A260
7220-01-034-4011INTERCHANGEABLE
CARPET
3439-01-496-1069INTERCHANGEABLE
HOLDER,ELECTRODE,WELDING
A-260
7025-01-530-7438INTERCHANGEABLE
DISK DRIVE UNIT
A260

Frequently Asked Questions

What is NSN 4730-00-677-3738?

NSN 4730-00-677-3738 is a Inverted Nut,tube Coupling, manufactured by Parker-Hannifin Corp Div Fluid System Connector Division, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-677-3738?

NSN 4730-00-677-3738 has 11 cross-referenced part numbers: 37288H (Komatsu American Intl Co), 81LB1-2IN (Imperial), 6100X8 (Dana Corp Weatherhead Div), 6100X8 (Dana Corp Weatherhead Div Antwerp Plant), 61HD-8 (Parker-Hannifin Corp Div Fluid System Connector Division) and 6 more.

What NSN replaces 4730-00-677-3738?

There are 10 known substitutes for 4730-00-677-3738: 5930-00-114-1722, 5950-00-138-1250, 4730-00-213-0145 and 7 more. Verify interchangeability with system specifications before substitution.

Is NSN 4730-00-677-3738 still in active supply?

NSN 4730-00-677-3738 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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