PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

68VL-4-4Adapter,straight,pipe to Tube

Parker-Hannifin Corp Div Fluid System Connector Division · NSN 4730-00-511-7991 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-511-7991 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-511-7991. Primary manufacturer part number: 68VL-4-4.
Features
  • Adapter,straight,pipe to Tube — FSC 4730
  • Operating Pressure: 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
  • Nominal Thread Size: 0.438 INCHES FIRST END0.438 INCHES FIRST END IN
  • Nominal Outside Diameter Tube Accommodated: 0.250 INCHES FIRST END IN
  • Nominal Thread Size: 0.250 INCHES SECOND END0.250 INCHES SECOND END IN
  • Thread Class: 2A FIRST END2A FIRST END A
  • Connection Style: COMPRESSION (TUBE) FIRST ENDCOMPRESSION (TUBE) FIRST END
  • Thread Series Designator: NPTF SECOND END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy 360 Overall construction
General Description

The Adapter,straight,pipe to Tube, cataloged under National Stock Number 4730-00-511-7991, 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. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-511-7991
Primary Part Number68VL-4-4
Item NameAdapter,straight,pipe to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerParker-Hannifin Corp Div Fluid System Connector Division
StatusCANCELLED
Operating Pressure300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Nominal Thread Size0.438 INCHES FIRST END0.438 INCHES FIRST END IN
Nominal Outside Diameter Tube Accommodated0.250 INCHES FIRST END IN
Nominal Thread Size0.250 INCHES SECOND END0.250 INCHES SECOND END IN
Thread Class2A FIRST END2A FIRST END A
Connection StyleCOMPRESSION (TUBE) FIRST ENDCOMPRESSION (TUBE) FIRST END
Thread Series DesignatorNPTF SECOND END
Maximum Operating Temp275.0 FAHRENHEIT SINGLE RESPONSE275.0 FAHRENHEIT SINGLE RESPONSE DEGF
Connection TypeTHREADED EXTERNAL TUBE FIRST ENDTHREADED EXTERNAL TUBE FIRST END
Connection TypeTHREADED EXTERNAL PIPE SECOND ENDTHREADED EXTERNAL PIPE SECOND END
Media for Which DesignedWATER-OIL-GAS SINGLE RESPONSE
Furnished Items and Quantity1 SHORT COUPLING NUT AND 1 PREFORMED PACKING
Connection StylePLAIN (PIPE) SECOND ENDPLAIN (PIPE) SECOND END
Thread Series DesignatorNPTF SECOND ENDUNF FIRST END
Material Document and ClassificationQQ-B-626,COMP 22 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Seat Nominal Radius0.062 INCHES FIRST END IN
MaterialCOPPER ALLOY 360 OVERALL
Nominal Overall Length1.340 INCHES IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 11
4820-00-316-265914-01042-06 INTERCHANGEABLE
Valve,angle
Carrier Corp
3010-00-454-0903A12052 INTERCHANGEABLE
Disk,clutch,nonvehicular
Eaton Aerospace Llc Dba Eaton Inoac Div Fuel & Motion Control Systems Division
3455-00-531-132719636 INTERCHANGEABLE
Reamer,machine
Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa
5305-00-763-78222213-047057 INTERCHANGEABLE
Screw,machine
Tokyo Aircraft Instrument Co. Ltd
5950-00-959-2609240-0674-000 INTERCHANGEABLE
Coil,radio Frequency
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
5930-01-025-7172604AS305-12 INTERCHANGEABLE
Switch,pressure
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
4810-01-228-102622223 INTERCHANGEABLE
Valve,solenoid
Cleveland Range, Llc
5365-01-312-8664 INTERCHANGEABLE
Ring,cutter,pump
5985-01-344-8659607-4093-001 INTERCHANGEABLE
Stop-Sleeve
Rockwell Collins, Inc. Div Collins Aerospace - Mission Systems
6510-01-592-3079AB1004L-8 INTERCHANGEABLE
Bandage,elastic
R.g. Enterprises (u.s.a.), Inc. Dba Rg Enterprises Inc
Cross-Reference Index
Part NumberManufacturer
68FL1-4X1-4 Imperial (USA)
68VL-4-4 PRIMARY Parker-Hannifin Corp Div Fluid System Connector Division (USA)
68FL1-40DTUBEX1 Imperial (USA)
222-23 Cnh Industrial America Llc Dba Cnh America (USA)
8488542 Us Army Aviation and Missile Command (USA)
A12052 PRIMARY Atlantic Research Corp (USA)
AL77N Deere & Co (USA)
Related Parts
4820-00-316-2659INTERCHANGEABLE
VALVE,ANGLE
14-01042-06
3010-00-454-0903INTERCHANGEABLE
DISK,CLUTCH,NONVEHICULAR
A12052
3455-00-531-1327INTERCHANGEABLE
REAMER,MACHINE
19636
5305-00-763-7822INTERCHANGEABLE
SCREW,MACHINE
2213-047057
5950-00-959-2609INTERCHANGEABLE
COIL,RADIO FREQUENCY
240-0674-000
5930-01-025-7172INTERCHANGEABLE
SWITCH,PRESSURE
604AS305-12
4810-01-228-1026INTERCHANGEABLE
VALVE,SOLENOID
22223
5365-01-312-8664INTERCHANGEABLE
RING,CUTTER,PUMP
5985-01-344-8659INTERCHANGEABLE
STOP-SLEEVE
607-4093-001
6510-01-592-3079INTERCHANGEABLE
BANDAGE,ELASTIC
AB1004L-8
6625-01-647-6380INTERCHANGEABLE
ADAPTER,TEST
22223

Frequently Asked Questions

What is NSN 4730-00-511-7991?

NSN 4730-00-511-7991 is a Adapter,straight,pipe to Tube, 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 4730-00-511-7991?

NSN 4730-00-511-7991 has 7 cross-referenced part numbers: 68FL1-4X1-4 (Imperial), 68VL-4-4 (Parker-Hannifin Corp Div Fluid System Connector Division), 68FL1-40DTUBEX1 (Imperial), 222-23 (Cnh Industrial America Llc Dba Cnh America), 8488542 (Us Army Aviation and Missile Command) and 2 more.

What NSN replaces 4730-00-511-7991?

There are 11 known substitutes for 4730-00-511-7991: 4820-00-316-2659, 3010-00-454-0903, 3455-00-531-1327 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 68VL-4-4?

Key specifications for 68VL-4-4: Operating Pressure: 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Nominal Thread Size: 0.438 INCHES FIRST END0.438 INCHES FIRST END IN; Nominal Outside Diameter Tube Accommodated: 0.250 INCHES FIRST END IN; Nominal Thread Size: 0.250 INCHES SECOND END0.250 INCHES SECOND END IN. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-511-7991 still in active supply?

NSN 4730-00-511-7991 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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