PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

N1276Adapter,straight,flange to Hose

Clow Corp Marine Valve Products Div · NSN 4730-00-289-2050 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-289-2050 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-289-2050. Primary manufacturer part number: N1276.
Features
  • Adapter,straight,flange to Hose — FSC 4730
  • Bolt Hole Nominal Diameter: 0.688 INCHES FIRST END IN
  • Thread Quantity Per Inch: 7-1/2 SECOND END
  • Media for Which Designed: STEAM FIRST RESPONSE
  • Bolt Circle Nominal Diameter: 8.875 INCHES FIRST END IN
  • Flange Face Design: PLAIN FIRST END
  • Operating Pressure: 150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
  • Nominal Outside Diameter: 10.125 INCHES FIRST END IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy Overall construction
General Description

The Adapter,straight,flange to Hose, cataloged under National Stock Number 4730-00-289-2050, 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 Clow Corp Marine Valve Products Div. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-289-2050
Primary Part NumberN1276
Item NameAdapter,straight,flange to Hose
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerClow Corp Marine Valve Products Div
StatusACTIVE
Bolt Hole Nominal Diameter0.688 INCHES FIRST END IN
Thread Quantity Per Inch7-1/2 SECOND END
Media for Which DesignedSTEAM FIRST RESPONSE
Bolt Circle Nominal Diameter8.875 INCHES FIRST END IN
Flange Face DesignPLAIN FIRST END
Operating Pressure150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
Nominal Outside Diameter10.125 INCHES FIRST END IN
Nondefinitive Spec/std DataEF TYPE AND 150.0JSZ6.000 IN CLASS IN
Operating Pressure150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS
Nominal Thickness0.562 INCHES FIRST END IN
Bolt Hole Quantity12 FIRST END
Nominal Thread Size2.500 INCHES SECOND END IN
MaterialCOPPER ALLOY OVERALL
Flange ShapeROUND WITH HOLES FIRST END
Connection TypeFLANGE FIRST END
Nominal Overall Length1.688 INCHES IN
Thread Series DesignatorNH SECOND END
Connection StylePLAIN (HOSE) SECOND END
Media for Which DesignedWATER-OIL-GAS SECOND RESPONSE
Maximum Operating Temp218.0 CELSIUS FIRST RESPONSE DEGC
Connection TypeTHREADED EXTERNAL HOSE SECOND END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5330-00-196-5339 INTERCHANGEABLE
Packing,preformed
4730-00-277-3382510 INTERCHANGEABLE
Adapter,straight,flange to Hose
Service Brass and Aluminum Foundry Co, Inc. Dba Service Brass Fittings
4730-00-277-3383510600N1 INTERCHANGEABLE
Adapter,straight,flange to Hose
Service Brass and Aluminum Foundry Co, Inc. Dba Service Brass Fittings
4730-00-289-2046CS4730-0144 INTERCHANGEABLE
Adapter,straight,flange to Hose
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)
4730-00-289-2047 INTERCHANGEABLE
Adapter,straight,flange to Hose
4730-00-289-2048 INTERCHANGEABLE
Adapter,straight,flange to Hose
4730-00-289-2049 INTERCHANGEABLE
Adapter,straight,flange to Hose
Cross-Reference Index
Part NumberManufacturer
B104ANDB176 Naval Ship Systems Command (USA)
B104ANDB176 Naval Sea Systems Command (USA)
MILF20042 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
N1276 PRIMARY Clow Corp Marine Valve Products Div (USA)
MIL-PRF-20042 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5330-00-196-5339INTERCHANGEABLE
PACKING,PREFORMED
4730-00-277-3382INTERCHANGEABLE
ADAPTER,STRAIGHT,FLANGE TO HOSE
510
4730-00-277-3383INTERCHANGEABLE
ADAPTER,STRAIGHT,FLANGE TO HOSE
510600N1
4730-00-289-2046INTERCHANGEABLE
ADAPTER,STRAIGHT,FLANGE TO HOSE
CS4730-0144
4730-00-289-2047INTERCHANGEABLE
ADAPTER,STRAIGHT,FLANGE TO HOSE
4730-00-289-2048INTERCHANGEABLE
ADAPTER,STRAIGHT,FLANGE TO HOSE
4730-00-289-2049INTERCHANGEABLE
ADAPTER,STRAIGHT,FLANGE TO HOSE

Frequently Asked Questions

What is NSN 4730-00-289-2050?

NSN 4730-00-289-2050 is a Adapter,straight,flange to Hose, manufactured by Clow Corp Marine Valve Products Div, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-289-2050?

NSN 4730-00-289-2050 has 5 cross-referenced part numbers: B104ANDB176 (Naval Ship Systems Command), B104ANDB176 (Naval Sea Systems Command), MILF20042 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), N1276 (Clow Corp Marine Valve Products Div), MIL-PRF-20042 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 4730-00-289-2050?

There are 7 known substitutes for 4730-00-289-2050: 5330-00-196-5339, 4730-00-277-3382, 4730-00-277-3383 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of N1276?

Key specifications for N1276: Bolt Hole Nominal Diameter: 0.688 INCHES FIRST END IN; Thread Quantity Per Inch: 7-1/2 SECOND END; Media for Which Designed: STEAM FIRST RESPONSE; Bolt Circle Nominal Diameter: 8.875 INCHES FIRST END IN. 21 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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