PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS14303Elbow,pipe

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 4730-00-249-3945 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-249-3945 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-249-3945. Primary manufacturer part number: MS14303.
Features
  • Elbow,pipe — FSC 4730
  • Material: STEEL OVERALL
  • Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
  • Thread Series Designator: NPT ALL ENDS
  • Material Document and Classification: ASTM A105,GRADE 2 ASSN STD SINGLE MATERIAL RESPONSE AND ASTM A182,F22 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Nondefinitive Spec/std Data: 1 TYPE AND 2 CLASS
  • Flow Angle: 45.0 DEGREES
  • Media for Which Designed: WATER-OIL-GAS SINGLE RESPONSE
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Overall construction
General Description

The Elbow,pipe, cataloged under National Stock Number 4730-00-249-3945, 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 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-249-3945
Primary Part NumberMS14303
Item NameElbow,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
MaterialSTEEL OVERALL
Operating Pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Thread Series DesignatorNPT ALL ENDS
Material Document and ClassificationASTM A105,GRADE 2 ASSN STD SINGLE MATERIAL RESPONSE AND ASTM A182,F22 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Nondefinitive Spec/std Data1 TYPE AND 2 CLASS
Flow Angle45.0 DEGREES
Media for Which DesignedWATER-OIL-GAS SINGLE RESPONSE
Nominal Thread Size0.250 INCHES ALL ENDS IN
Nominal Pipe Size Accommodated0.750 INCHES ALL ENDS IN
Leg Length0.750 INCHES NOMINAL FIRST END IN
Connection StylePLAIN (PIPE) FIRST END
Maximum Operating Temp37.8 CELSIUS SINGLE RESPONSE DEGC
Connection TypeTHREADED INTERNAL PIPE ALL ENDS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4730-00-014-6694 INTERCHANGEABLE
Bushing,pipe
4730-00-187-7570 INTERCHANGEABLE
Coupling,pipe
4730-00-187-7575 INTERCHANGEABLE
Coupling,pipe
4730-00-249-3947 INTERCHANGEABLE
Elbow,pipe
4730-00-249-3948 INTERCHANGEABLE
Elbow,pipe
4730-00-249-3950 INTERCHANGEABLE
Elbow,pipe
4730-00-249-3951 INTERCHANGEABLE
Elbow,pipe
4730-00-249-3952 INTERCHANGEABLE
Elbow,pipe
4730-00-253-4426 INTERCHANGEABLE
Elbow,pipe
4730-00-253-4427 INTERCHANGEABLE
Elbow,pipe
Cross-Reference Index
Part NumberManufacturer
MS14303 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS14303-1E04 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MILP18174 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS14303-2ATV Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
ASME-B16.11 The American Society of Mechanical Engineers (USA)
Related Parts
4730-00-014-6694INTERCHANGEABLE
BUSHING,PIPE
4730-00-187-7570INTERCHANGEABLE
COUPLING,PIPE
4730-00-187-7575INTERCHANGEABLE
COUPLING,PIPE
4730-00-249-3947INTERCHANGEABLE
ELBOW,PIPE
4730-00-249-3948INTERCHANGEABLE
ELBOW,PIPE
4730-00-249-3950INTERCHANGEABLE
ELBOW,PIPE
4730-00-249-3951INTERCHANGEABLE
ELBOW,PIPE
4730-00-249-3952INTERCHANGEABLE
ELBOW,PIPE
4730-00-253-4426INTERCHANGEABLE
ELBOW,PIPE
4730-00-253-4427INTERCHANGEABLE
ELBOW,PIPE
4730-00-253-4430INTERCHANGEABLE
ELBOW,PIPE
4730-00-253-4431INTERCHANGEABLE
ELBOW,PIPE

Frequently Asked Questions

What is NSN 4730-00-249-3945?

NSN 4730-00-249-3945 is a Elbow,pipe, 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 4730-00-249-3945?

NSN 4730-00-249-3945 has 5 cross-referenced part numbers: MS14303 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MS14303-1E04 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MILP18174 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MS14303-2ATV (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), ASME-B16.11 (The American Society of Mechanical Engineers).

What NSN replaces 4730-00-249-3945?

There are 12 known substitutes for 4730-00-249-3945: 4730-00-014-6694, 4730-00-187-7570, 4730-00-187-7575 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS14303?

Key specifications for MS14303: Material: STEEL OVERALL; Operating Pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Thread Series Designator: NPT ALL ENDS; Material Document and Classification: ASTM A105,GRADE 2 ASSN STD SINGLE MATERIAL RESPONSE AND ASTM A182,F22 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 13 total characteristics are documented in the Federal Logistics Information System.

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