PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS51501A6SNipple,tube

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 4730-00-781-6089 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-781-6089 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-781-6089. Primary manufacturer part number: MS51501A6S.
Features
  • Nipple,tube — FSC 4730
  • Nominal Thread Size: 0.562 INCHES ALL ENDS IN
  • Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
  • Nominal Overall Length: 1.410 INCHES IN
  • Connection Type: THREADED EXTERNAL TUBE ALL ENDS
  • Material: STEEL CORROSION RESISTING OVERALL
  • Maximum Operating Temp: 400.0 FAHRENHEIT SINGLE RESPONSE DEGF
  • Furnished Items and Quantity: 2 TUBE COUPLING NUT W/SLEEVE
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Nipple,tube, cataloged under National Stock Number 4730-00-781-6089, 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 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 36 commercial cross-references from 26 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
NSN4730-00-781-6089
Primary Part NumberMS51501A6S
Item NameNipple,tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Nominal Thread Size0.562 INCHES ALL ENDS IN
Operating Pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Nominal Overall Length1.410 INCHES IN
Connection TypeTHREADED EXTERNAL TUBE ALL ENDS
MaterialSTEEL CORROSION RESISTING OVERALL
Maximum Operating Temp400.0 FAHRENHEIT SINGLE RESPONSE DEGF
Furnished Items and Quantity2 TUBE COUPLING NUT W/SLEEVE
Seat Angle37.0 DEGREES ALL ENDS
Surface Treatment Document and ClassificationQQ-P-35,TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Media for Which DesignedHYDRAULIC FLUID SINGLE RESPONSE
Specification/standard Data96906-MS51501 GOVERNMENT STANDARD
Style DesignatorFLARED W/ CENTER WRENCHING FACILITY
Nominal Outside Diameter Tube Accommodated0.375 INCHES ALL ENDS IN
Thread Series DesignatorUNF ALL ENDS
Surface TreatmentPASSIVATE OVERALL
Connection StyleFLARED (TUBE) ALL ENDS
Thread Class2A ALL ENDS A
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4820-00-116-2942 INTERCHANGEABLE
Valve,ball
5950-00-146-24471336 INTERCHANGEABLE
Transformer,special
S and H Industries
4320-00-343-67041336 INTERCHANGEABLE
Retainer,frame
A. O. Smith Corporation Dba a O Smith Corp
4820-00-348-175414691 INTERCHANGEABLE
Seat,valve
Meggitt North Hollywood Inc
6615-00-373-93981275-6 INTERCHANGEABLE
Pulley Assy,servo D
Naval Air Warfare Center Aircraft Division Joint Base Jbmdl
5360-00-377-48678902-25-8 INTERCHANGEABLE
Spring,helical,torsion
Chief of Engineers Dept of Army
5140-00-391-10691336 INTERCHANGEABLE
Belt,tool,repairman's
Buckingham Mfg Co Inc
6105-00-598-1586 INTERCHANGEABLE
Motor,alternating Current
5910-00-809-8088WP202.5 INTERCHANGEABLE
Capacitor,fixed,electrolytic
Cornell-Dubilier Marketing Inc
5945-00-811-8211KS10914 INTERCHANGEABLE
Relay,electromagnetic
Cornell-Carr Co., Inc.
Cross-Reference Index
Part NumberManufacturer
MS51501A6S Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS51501A6S Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA)
14691 Hyster-Yale Group, Inc. (USA)
6HBTXSS Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters (USA)
959274-1 Raytheon Company Dba Raytheon Co (USA)
6JMS Contitech Usa, Inc. (USA)
6STTS Deutsch Co the (USA)
LT1-1548 Rolo Instrument Products Inc (USA)
C5305X6 Dana Corp Weatherhead Div (USA)
959274 Raytheon Company Div Corp (USA)
332-2050-050 Rockwell Collins, Inc. Div Collins Aerospace - Mission Systems (USA)
6LHTXS Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division (USA)
6HBTXSS Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division (USA)
332-2050-050 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
MS51501-A6SS Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
6LHTXS Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters (USA)
MIL-F-18866 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
9R2118 Crissair Inc Div Esco Technologies (USA)
5815X6 Dana Corp Weatherhead Div (USA)
0303-6-6 Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division (USA)
Related Parts
4820-00-116-2942INTERCHANGEABLE
VALVE,BALL
5950-00-146-2447INTERCHANGEABLE
TRANSFORMER,SPECIAL
1336
4320-00-343-6704INTERCHANGEABLE
RETAINER,FRAME
1336
4820-00-348-1754INTERCHANGEABLE
SEAT,VALVE
14691
6615-00-373-9398INTERCHANGEABLE
PULLEY ASSY,SERVO D
1275-6
5360-00-377-4867INTERCHANGEABLE
SPRING,HELICAL,TORSION
8902-25-8
5140-00-391-1069INTERCHANGEABLE
BELT,TOOL,REPAIRMAN'S
1336
6105-00-598-1586INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
5910-00-809-8088INTERCHANGEABLE
CAPACITOR,FIXED,ELECTROLYTIC
WP202.5
5945-00-811-8211INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
KS10914
5935-00-849-4578INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
3331
5120-00-895-9577INTERCHANGEABLE
WRENCH,BOX AND OPEN END BOX,COMB

Frequently Asked Questions

What is NSN 4730-00-781-6089?

NSN 4730-00-781-6089 is a Nipple,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 4730-00-781-6089?

NSN 4730-00-781-6089 has 36 cross-referenced part numbers: MS51501A6S (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MS51501A6S (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution), 14691 (Hyster-Yale Group, Inc.), 6HBTXSS (Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters), 959274-1 (Raytheon Company Dba Raytheon Co) and 31 more.

What NSN replaces 4730-00-781-6089?

There are 12 known substitutes for 4730-00-781-6089: 4820-00-116-2942, 5950-00-146-2447, 4320-00-343-6704 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS51501A6S?

Key specifications for MS51501A6S: Nominal Thread Size: 0.562 INCHES ALL ENDS IN; Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Nominal Overall Length: 1.410 INCHES IN; Connection Type: THREADED EXTERNAL TUBE ALL ENDS. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-781-6089 still in active supply?

NSN 4730-00-781-6089 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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