PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A-A-59277Coupling Assembly,hose

Federal Commercial Item Description Promulgated by General Services Administration Washington DC · NSN 4730-00-288-9970 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-288-9970 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-288-9970. Primary manufacturer part number: A-A-59277.
Features
  • Coupling Assembly,hose — FSC 4730
  • Thread Quantity Per Inch: 9 ALL ENDS
  • Material: COPPER ALLOY OVERALL
  • Operating Pressure: 600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
  • Nominal Overall Length: 3.938 INCHES IN
  • Media for Which Designed: WATER SINGLE RESPONSE
  • Thread Series Designator: NH ALL ENDS
  • Furnished Items and Quantity: 2 HOSE COUPLING SLEEVE
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy Overall construction
General Description

The Coupling Assembly,hose, cataloged under National Stock Number 4730-00-288-9970, 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 Federal Commercial Item Description Promulgated by General Services Administration Washington DC. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 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
NSN4730-00-288-9970
Primary Part NumberA-A-59277
Item NameCoupling Assembly,hose
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerFederal Commercial Item Description Promulgated by General Services Administration Washington DC
StatusACTIVE
Thread Quantity Per Inch9 ALL ENDS
MaterialCOPPER ALLOY OVERALL
Operating Pressure600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Nominal Overall Length3.938 INCHES IN
Media for Which DesignedWATER SINGLE RESPONSE
Thread Series DesignatorNH ALL ENDS
Furnished Items and Quantity2 HOSE COUPLING SLEEVE
Nominal Thread Size1.500 INCHES ALL ENDS IN
Nondefinitive Spec/std Data1&&JCLA TYPE
Connection TypeTHREADED INTERNAL HOSE ALL ENDS
Connection StyleSOCKET (HOSE) ALL ENDS
Seat TypeGASKET
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4210-00-142-2071 INTERCHANGEABLE
Hose Assembly,nonmetallic,fire F
4730-00-202-7466 INTERCHANGEABLE
Reducer,hose
4210-00-203-3873CB3516-6002-2 INTERCHANGEABLE
Nozzle,fire Equipment
Macleod Inc
4210-00-223-682647257 STYLE 214 INTERCHANGEABLE
Nozzle,fire Equipment
Elkhart Brass Manufacturing Company, Llc Div Elkhart Brass Manufacturing Company
4730-00-223-6849 INTERCHANGEABLE
Ring,expansion,hose
4210-00-240-5530 INTERCHANGEABLE
Strainer,suction
4210-00-240-5537 INTERCHANGEABLE
Plug,hose
4210-00-289-1537 INTERCHANGEABLE
Strainer,suction
4210-00-289-1538 INTERCHANGEABLE
Strainer,suction
4720-00-289-2579 INTERCHANGEABLE
Hose Assembly,nonmetallic
Cross-Reference Index
Part NumberManufacturer
A-A-59277 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
AA59277-A1B Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
MILF19488 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
4210-00-142-2071INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC,FIRE F
4730-00-202-7466INTERCHANGEABLE
REDUCER,HOSE
4210-00-203-3873INTERCHANGEABLE
NOZZLE,FIRE EQUIPMENT
CB3516-6002-2
4210-00-223-6826INTERCHANGEABLE
NOZZLE,FIRE EQUIPMENT
47257 STYLE 214
4730-00-223-6849INTERCHANGEABLE
RING,EXPANSION,HOSE
4210-00-240-5530INTERCHANGEABLE
STRAINER,SUCTION
4210-00-240-5537INTERCHANGEABLE
PLUG,HOSE
4210-00-289-1537INTERCHANGEABLE
STRAINER,SUCTION
4210-00-289-1538INTERCHANGEABLE
STRAINER,SUCTION
4720-00-289-2579INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
4210-00-307-4699INTERCHANGEABLE
COUPLING,HOSE,FIRE FIGHTING
35RBG1500215002
4210-00-355-4862INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO HOSE,FI
01405601

Frequently Asked Questions

What is NSN 4730-00-288-9970?

NSN 4730-00-288-9970 is a Coupling Assembly,hose, manufactured by Federal Commercial Item Description Promulgated by General Services Administration Washington DC, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-288-9970?

NSN 4730-00-288-9970 has 3 cross-referenced part numbers: A-A-59277 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), AA59277-A1B (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), MILF19488 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 4730-00-288-9970?

There are 12 known substitutes for 4730-00-288-9970: 4210-00-142-2071, 4730-00-202-7466, 4210-00-203-3873 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A-A-59277?

Key specifications for A-A-59277: Thread Quantity Per Inch: 9 ALL ENDS; Material: COPPER ALLOY OVERALL; Operating Pressure: 600.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS; Nominal Overall Length: 3.938 INCHES IN. 12 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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