PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS51508-4Elbow,pipe to Tube

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 4730-00-995-1568 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-995-1568 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-995-1568. Primary manufacturer part number: MS51508-4.
Features
  • Elbow,pipe to Tube — FSC 4730
  • Thread Class: 2A FIRST END A
  • Connection Style: PLAIN (PIPE) SECOND END
  • Maximum Operating Temp: 400.0 FAHRENHEIT SINGLE RESPONSE DEGF
  • Leg Length: 0.720 INCHES NOMINAL FIRST END IN
  • Connection Style: FLARED (TUBE) FIRST END
  • Connection Type: THREADED EXTERNAL PIPE SECOND END
  • Thread Series Designator: UNF FIRST END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Overall construction
General Description

The Elbow,pipe to Tube, cataloged under National Stock Number 4730-00-995-1568, 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 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 39 commercial cross-references from 22 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-995-1568
Primary Part NumberMS51508-4
Item NameElbow,pipe to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Thread Class2A FIRST END A
Connection StylePLAIN (PIPE) SECOND END
Maximum Operating Temp400.0 FAHRENHEIT SINGLE RESPONSE DEGF
Leg Length0.720 INCHES NOMINAL FIRST END IN
Connection StyleFLARED (TUBE) FIRST END
Connection TypeTHREADED EXTERNAL PIPE SECOND END
Thread Series DesignatorUNF FIRST END
Leg Length0.640 INCHES NOMINAL SECOND END IN
Connection TypeTHREADED EXTERNAL TUBE FIRST END
Furnished Items and Quantity1 SHORT COUPLING NUT WITH SLEEVE
Seat Angle37.0 DEGREES FIRST END
Nominal Outside Diameter Tube Accommodated0.250 INCHES FIRST END IN
Media for Which DesignedHYDRAULIC FLUID SINGLE RESPONSE
Nondefinitive Spec/std Data4E FIGURE
Thread Series DesignatorNPTF SECOND END
Specification/standard Data96906-MS51508 GOVERNMENT STANDARD AND 81343-J514 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD AND 81349-MIL-F-18866 GOVERNMENT SPECIFICATION
Surface TreatmentZINC OVERALL
MaterialSTEEL OVERALL
Operating Pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Flow Angle45.0 DEGREES
Nominal Thread Size0.125 INCHES SECOND END IN
Nominal Thread Size0.438 INCHES FIRST END IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5110-00-180-0949 INTERCHANGEABLE
Punch and Die,knockout
3750-00-251-3986 INTERCHANGEABLE
Fork,spading,hand
3433-00-568-3997MS INTERCHANGEABLE
Safety Unit,flame
Oerlikon Metco Us Inc
5996-00-581-2246MS INTERCHANGEABLE
Amplifier,radio Frequency
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
5999-00-913-7240 INTERCHANGEABLE
Delay Line
5120-01-066-5625 INTERCHANGEABLE
Positioner
4820-01-074-306122-568 INTERCHANGEABLE
Valve,check
Thermo King Corporation Dba Phoenix Global Distirbution.
5305-01-177-653522568 INTERCHANGEABLE
Screw,machine
International Business Machines Corp Parts Order Center Dept E - 54
5935-01-236-6799305-0486-1 INTERCHANGEABLE
Connector,plug,electrical
Trompeter Electronics, Inc.
4320-01-244-248931-0324 INTERCHANGEABLE
Ring,wearing
Grundfos Pumps Corp
Cross-Reference Index
Part NumberManufacturer
MS51508-4 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
C5355X4 Dana Corp Weatherhead Div (USA)
P28828 Lull Lift Corp Dba Omniquip Parts Worldwide (USA)
P28828 Jlg Industries, Inc. (USA)
4VBTX-S Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division (USA)
4-2 070302C Society of Automotive Engineers Inc (USA)
G210852 American Telephone and Telegraph Co (USA)
22568 Paccar Winch Inc Dba Paccar Winch Division (USA)
MS51508B4 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
4CT45DEGNS Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters (USA)
MIL-DTL-18866 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS51508 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
4CT45-S Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division (USA)
4-2 070302C Sae International Dba Sae International (USA)
102-1084 Landoll Company, Llc (USA)
MIL-F-18866 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
3103-2-4 Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division (USA)
MS51508B4Z Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
3103-2-4 Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division (USA)
MS51508A4Z Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division (USA)
Related Parts
5110-00-180-0949INTERCHANGEABLE
PUNCH AND DIE,KNOCKOUT
3750-00-251-3986INTERCHANGEABLE
FORK,SPADING,HAND
3433-00-568-3997INTERCHANGEABLE
SAFETY UNIT,FLAME
MS
5996-00-581-2246INTERCHANGEABLE
AMPLIFIER,RADIO FREQUENCY
MS
5999-00-913-7240INTERCHANGEABLE
DELAY LINE
5120-01-066-5625INTERCHANGEABLE
POSITIONER
4820-01-074-3061INTERCHANGEABLE
VALVE,CHECK
22-568
5305-01-177-6535INTERCHANGEABLE
SCREW,MACHINE
22568
5935-01-236-6799INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
305-0486-1
4320-01-244-2489INTERCHANGEABLE
RING,WEARING
31-0324
4730-01-494-2255INTERCHANGEABLE
ELBOW,PIPE TO TUBE
4730-01-494-2257INTERCHANGEABLE
ELBOW,PIPE TO TUBE

Frequently Asked Questions

What is NSN 4730-00-995-1568?

NSN 4730-00-995-1568 is a Elbow,pipe to Tube, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-995-1568?

NSN 4730-00-995-1568 has 39 cross-referenced part numbers: MS51508-4 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), C5355X4 (Dana Corp Weatherhead Div), P28828 (Lull Lift Corp Dba Omniquip Parts Worldwide), P28828 (Jlg Industries, Inc.), 4VBTX-S (Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division) and 34 more.

What NSN replaces 4730-00-995-1568?

There are 12 known substitutes for 4730-00-995-1568: 5110-00-180-0949, 3750-00-251-3986, 3433-00-568-3997 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS51508-4?

Key specifications for MS51508-4: End Item Identification: NSN 4210-01-486-1035 TFFT (TACTICAL FIRE FIGHTING TRUCK); Thread Class: 2A FIRST END A; Connection Style: PLAIN (PIPE) SECOND END; Maximum Operating Temp: 400.0 FAHRENHEIT SINGLE RESPONSE DEGF. 23 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-995-1568 still in active supply?

NSN 4730-00-995-1568 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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