PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

25020Coupling,pipe

Engineered Air Systems, Inc. Dba Drs Sustainment Systems · NSN 4730-01-178-0297 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-178-0297 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-178-0297. Primary manufacturer part number: 25020.
Features
  • Coupling,pipe — FSC 4730
  • Style Designator: GROOVED AND THREADED EXTERNAL
  • Surface Treatment: ANODIZE OVERALL
  • Nominal Overall Length: 6.000 INCHES IN
  • Surface Treatment Document and Classification: MIL-A-8625,TYPE 2,CLASS 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Nominal Pipe Size Accommodated: 6.000 INCHES SECOND END IN
  • Nominal Thread Size: 6.000 INCHES FIRST END IN
  • Pipe Wall Thickness Designation for Which Designed: SCHEDULE 40 SECOND END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Aluminum Alloy 6061 Overall construction
General Description

The Coupling,pipe, cataloged under National Stock Number 4730-01-178-0297, 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 Engineered Air Systems, Inc. Dba Drs Sustainment Systems. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 5 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
NSN4730-01-178-0297
Primary Part Number25020
Item NameCoupling,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerEngineered Air Systems, Inc. Dba Drs Sustainment Systems
StatusCANCELLED
Style DesignatorGROOVED AND THREADED EXTERNAL
Surface TreatmentANODIZE OVERALL
Nominal Overall Length6.000 INCHES IN
Surface Treatment Document and ClassificationMIL-A-8625,TYPE 2,CLASS 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Nominal Pipe Size Accommodated6.000 INCHES SECOND END IN
Nominal Thread Size6.000 INCHES FIRST END IN
Pipe Wall Thickness Designation for Which DesignedSCHEDULE 40 SECOND END
MaterialALUMINUM ALLOY 6061 OVERALL
Thread Series DesignatorNPT FIRST END
Material Document and ClassificationWW-T-700/6,COND T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5360-00-300-753625020 INTERCHANGEABLE
Spring,valve
Hdt Expeditionary Systems Inc
4730-00-569-9649250-20 INTERCHANGEABLE
Adapter,straight,pipe to Tube
Lenz Inc Dba the Lenz Company
2935-00-622-7640 INTERCHANGEABLE
Cooler,lubricating Oil,engine
6125-00-635-3770 INTERCHANGEABLE
Dynamotor-Power Supply
5905-00-853-3904 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
5120-01-074-5211THD420L INTERCHANGEABLE
Inserter,screw Thread Insert
Howmet Global Fastening Systems Inc. Div Tridair Products
6685-01-174-84172-5020 INTERCHANGEABLE
Gage,differential,dial Indicatin
Dwyer Instruments Inc
4710-01-185-44808J4875 INTERCHANGEABLE
Tube Assembly,metal
Caterpillar Inc Div Caterpillar Defense
4730-01-248-898025020-2 INTERCHANGEABLE
Reducer,tube
Hydraulics International, Inc. Dba Hydraulics International Inc
4730-01-323-508925020-1-TN INTERCHANGEABLE
Coupling,pipe
Rhba Acquisitions, Llc Dba Red Head Brass
Cross-Reference Index
Part NumberManufacturer
25020 Engineered Air Systems, Inc. Dba Drs Sustainment Systems (USA)
MIL-P-10388 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
FIG7081X6 Itt Grinnell Corp (USA)
A-A-52592 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
25020-2 Engineered Air Systems, Inc. Dba Drs Sustainment Systems (USA)
AA52592-A07AK1C6A Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
M10388-A-07-AK-1-C-6A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
40A-6IN Victaulic Company of America Inc Dba Victaulic Company of America (USA)
40A 6IN X 6IN Victaulic Company of America Inc Dba Victaulic Company of America (USA)
Related Parts
5360-00-300-7536INTERCHANGEABLE
SPRING,VALVE
25020
4730-00-569-9649INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
250-20
2935-00-622-7640INTERCHANGEABLE
COOLER,LUBRICATING OIL,ENGINE
6125-00-635-3770INTERCHANGEABLE
DYNAMOTOR-POWER SUPPLY
5905-00-853-3904INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
5120-01-074-5211INTERCHANGEABLE
INSERTER,SCREW THREAD INSERT
THD420L
6685-01-174-8417INTERCHANGEABLE
GAGE,DIFFERENTIAL,DIAL INDICATIN
2-5020
4710-01-185-4480INTERCHANGEABLE
TUBE ASSEMBLY,METAL
8J4875
4730-01-248-8980INTERCHANGEABLE
REDUCER,TUBE
25020-2
4730-01-323-5089INTERCHANGEABLE
COUPLING,PIPE
25020-1-TN
5998-01-345-1547INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
6515-01-348-8208INTERCHANGEABLE
OTOSCOPE
238-3

Frequently Asked Questions

What is NSN 4730-01-178-0297?

NSN 4730-01-178-0297 is a Coupling,pipe, manufactured by Engineered Air Systems, Inc. Dba Drs Sustainment Systems, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-01-178-0297?

NSN 4730-01-178-0297 has 9 cross-referenced part numbers: 25020 (Engineered Air Systems, Inc. Dba Drs Sustainment Systems), MIL-P-10388 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), FIG7081X6 (Itt Grinnell Corp), A-A-52592 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), 25020-2 (Engineered Air Systems, Inc. Dba Drs Sustainment Systems) and 4 more.

What NSN replaces 4730-01-178-0297?

There are 12 known substitutes for 4730-01-178-0297: 5360-00-300-7536, 4730-00-569-9649, 2935-00-622-7640 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 25020?

Key specifications for 25020: Style Designator: GROOVED AND THREADED EXTERNAL; Surface Treatment: ANODIZE OVERALL; Nominal Overall Length: 6.000 INCHES IN; Surface Treatment Document and Classification: MIL-A-8625,TYPE 2,CLASS 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-01-178-0297 still in active supply?

NSN 4730-01-178-0297 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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