PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS51527B12Elbow,tube to Boss

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 4730-01-500-1071 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-500-1071 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-500-1071. Primary manufacturer part number: MS51527B12.
Features
  • Elbow,tube to Boss — FSC 4730
  • Seat Angle: 37.0 DEGREES FIRST END
  • Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
  • Flow Angle: 90.0 DEGREES
  • Connection Style: FLARED (TUBE) FIRST END
  • Leg Length: 1.660 INCHES NOMINAL FIRST END IN
  • Furnished Items and Quantity: 1 LOCKNUT AND 1 PREFORMED PACKING AND 1 FLAT WASHER
  • Nominal Outside Diameter Tube Accommodated: 0.750 INCHES FIRST END IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Comp 12l14 Overall construction
General Description

The Elbow,tube to Boss, cataloged under National Stock Number 4730-01-500-1071, 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 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-500-1071
Primary Part NumberMS51527B12
Item NameElbow,tube to Boss
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Seat Angle37.0 DEGREES FIRST END
Operating Pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Flow Angle90.0 DEGREES
Connection StyleFLARED (TUBE) FIRST END
Leg Length1.660 INCHES NOMINAL FIRST END IN
Furnished Items and Quantity1 LOCKNUT AND 1 PREFORMED PACKING AND 1 FLAT WASHER
Nominal Outside Diameter Tube Accommodated0.750 INCHES FIRST END IN
Media for Which DesignedHYDRAULIC FLUID SINGLE RESPONSE
MaterialSTEEL COMP 12L14 OVERALL
Connection TypeTHREADED EXTERNAL TUBE FIRST END
Nominal Thread Size1.068 INCHES ALL ENDS IN
Thread Series DesignatorUN ALL ENDS
Leg Length1.940 INCHES NOMINAL SECOND END IN
Thread Class2A ALL ENDS A
Maximum Operating Temp400.0 FAHRENHEIT SINGLE RESPONSE DEGF
Connection StyleEXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
Thread Quantity Per Inch12 ALL ENDS
Connection TypeTHREADED EXTERNAL BOSS SECOND END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4730-01-011-7736 INTERCHANGEABLE
Elbow,tube to Boss
Cross-Reference Index
Part NumberManufacturer
MS51527B12 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-18866 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
4730-01-011-7736INTERCHANGEABLE
ELBOW,TUBE TO BOSS

Frequently Asked Questions

What is NSN 4730-01-500-1071?

NSN 4730-01-500-1071 is a Elbow,tube to Boss, 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: active.

What are the part numbers for NSN 4730-01-500-1071?

NSN 4730-01-500-1071 has 2 cross-referenced part numbers: MS51527B12 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-18866 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 4730-01-500-1071?

There is 1 known substitute for 4730-01-500-1071: 4730-01-011-7736. Verify interchangeability with system specifications before substitution.

What are the specifications of MS51527B12?

Key specifications for MS51527B12: Seat Angle: 37.0 DEGREES FIRST END; Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Flow Angle: 90.0 DEGREES; Connection Style: FLARED (TUBE) FIRST END. 19 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com