PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AN780-4Adapter,straight,pipe to Tube

Aeronautical Standards Group Dept of Navy and Air Force · NSN 4730-00-287-1128 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-287-1128 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-287-1128. Primary manufacturer part number: AN780-4.
Features
  • Adapter,straight,pipe to Tube — FSC 4730
  • Connection Type: THREADED EXTERNAL TUBE FIRST END
  • Connection Style: INVERTED FLARE (TUBE) FIRST END
  • Seat Angle: 45.0 DEGREES FIRST END
  • Thread Class: 3A FIRST END A
  • Nominal Outside Diameter Tube Accommodated: 0.250 INCHES FIRST END IN
  • Material: COPPER ALLOY 377 AND COPPER ALLOY 360 OVERALL
  • Thread Series Designator: UNF FIRST END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy 377 and Copper Alloy 360 Overall construction
General Description

The Adapter,straight,pipe to Tube, cataloged under National Stock Number 4730-00-287-1128, 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 Aeronautical Standards Group Dept of Navy and Air Force. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 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
NSN4730-00-287-1128
Primary Part NumberAN780-4
Item NameAdapter,straight,pipe to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerAeronautical Standards Group Dept of Navy and Air Force
StatusCANCELLED
Connection TypeTHREADED EXTERNAL TUBE FIRST END
Connection StyleINVERTED FLARE (TUBE) FIRST END
Seat Angle45.0 DEGREES FIRST END
Thread Class3A FIRST END A
Nominal Outside Diameter Tube Accommodated0.250 INCHES FIRST END IN
MaterialCOPPER ALLOY 377 AND COPPER ALLOY 360 OVERALL
Thread Series DesignatorUNF FIRST END
Connection TypeTHREADED EXTERNAL PIPE SECOND END
Material Document and ClassificationQQ-B-626 COMP 21 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-B-626 COMP 22 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Nominal Overall Length1.000 INCHES IN
Nominal Thread Size0.438 INCHES FIRST END IN
Nominal Thread Size0.125 INCHES SECOND END IN
Thread Series DesignatorANPT SECOND END
Connection StylePLAIN (PIPE) SECOND END
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5940-00-081-0813306-0981-000 INTERCHANGEABLE
Terminal,stud
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
8115-00-179-05780578 INTERCHANGEABLE
Box,shipping
Connecticut Container Corp. Dba Connecticut Container Corp
4730-00-203-4681 INTERCHANGEABLE
Adapter,straight,pipe to Tube
4730-00-277-6403 INTERCHANGEABLE
Adapter,straight,pipe to Tube
4730-00-278-0830 INTERCHANGEABLE
Ferrule,brazing,tube Fitting
4730-00-278-083274962 INTERCHANGEABLE
Ferrule,brazing,tube Fitting
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
4730-00-278-0833 INTERCHANGEABLE
Ferrule,brazing,tube Fitting
4730-00-278-0837 INTERCHANGEABLE
Ferrule,brazing,tube Fitting
4730-00-278-5449 INTERCHANGEABLE
Nut,tube Coupling
4730-00-278-5453 INTERCHANGEABLE
Nut,tube Coupling
Cross-Reference Index
Part NumberManufacturer
AN780-4 Aeronautical Standards Group Dept of Navy and Air Force (USA)
6187 Raytheon Technical Services Company (USA)
MIL-DTL-6001 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MILF6001 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
0578 Power Industries Inc (USA)
158D4 Curtiss-Wright Controls, Inc. Div Actuation Division (USA)
Related Parts
5940-00-081-0813INTERCHANGEABLE
TERMINAL,STUD
306-0981-000
8115-00-179-0578INTERCHANGEABLE
BOX,SHIPPING
0578
4730-00-203-4681INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
4730-00-277-6403INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
4730-00-278-0830INTERCHANGEABLE
FERRULE,BRAZING,TUBE FITTING
4730-00-278-0832INTERCHANGEABLE
FERRULE,BRAZING,TUBE FITTING
74962
4730-00-278-0833INTERCHANGEABLE
FERRULE,BRAZING,TUBE FITTING
4730-00-278-0837INTERCHANGEABLE
FERRULE,BRAZING,TUBE FITTING
4730-00-278-5449INTERCHANGEABLE
NUT,TUBE COUPLING
4730-00-278-5453INTERCHANGEABLE
NUT,TUBE COUPLING
4730-00-287-1130INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
4730-00-287-1131INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE

Frequently Asked Questions

What is NSN 4730-00-287-1128?

NSN 4730-00-287-1128 is a Adapter,straight,pipe to Tube, manufactured by Aeronautical Standards Group Dept of Navy and Air Force, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-287-1128?

NSN 4730-00-287-1128 has 6 cross-referenced part numbers: AN780-4 (Aeronautical Standards Group Dept of Navy and Air Force), 6187 (Raytheon Technical Services Company), MIL-DTL-6001 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MILF6001 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 0578 (Power Industries Inc) and 1 more.

What NSN replaces 4730-00-287-1128?

There are 12 known substitutes for 4730-00-287-1128: 5940-00-081-0813, 8115-00-179-0578, 4730-00-203-4681 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AN780-4?

Key specifications for AN780-4: Connection Type: THREADED EXTERNAL TUBE FIRST END; Connection Style: INVERTED FLARE (TUBE) FIRST END; Seat Angle: 45.0 DEGREES FIRST END; Thread Class: 3A FIRST END A. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-287-1128 still in active supply?

NSN 4730-00-287-1128 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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