PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4738-4-4BAdapter,straight,pipe to Hose

Danfoss Power Solutions II, Llc · NSN 4730-00-028-7021 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-028-7021 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-028-7021. Primary manufacturer part number: 4738-4-4B.
Features
  • Adapter,straight,pipe to Hose — FSC 4730
  • Seat Angle: 30.0 DEGREES FIRST END
  • Nominal Thread Size: 0.250 INCHES FIRST END IN
  • Thread Series Designator: NPTF FIRST END
  • Nominal Inside Diameter Hose Accommodated: 0.250 INCHES SECOND END IN
  • Nominal Overall Length: 1.594 INCHES IN
  • Material: COPPER ALLOY OVERALL
  • Connection Style: INVERTED FLARE (PIPE) FIRST END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy Overall construction
General Description

The Adapter,straight,pipe to Hose, cataloged under National Stock Number 4730-00-028-7021, 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 Danfoss Power Solutions II, Llc. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 27 commercial cross-references from 24 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
NSN4730-00-028-7021
Primary Part Number4738-4-4B
Item NameAdapter,straight,pipe to Hose
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerDanfoss Power Solutions II, Llc
StatusCANCELLED
Seat Angle30.0 DEGREES FIRST END
Nominal Thread Size0.250 INCHES FIRST END IN
Thread Series DesignatorNPTF FIRST END
Nominal Inside Diameter Hose Accommodated0.250 INCHES SECOND END IN
Nominal Overall Length1.594 INCHES IN
MaterialCOPPER ALLOY OVERALL
Connection StyleINVERTED FLARE (PIPE) FIRST END
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
9905-00-045-3627L-11 INTERCHANGEABLE
Holder,card-Label
Aigner Index Inc
3120-00-148-7742L11 INTERCHANGEABLE
Bushing,sleeve
Circor Naval Solutions Llc Dba Warren Pumps
6240-00-151-5209 INTERCHANGEABLE
Lamp,incandescent
5120-00-189-2985 INTERCHANGEABLE
Key,socket Head Screw
5340-00-194-281424-80011 INTERCHANGEABLE
Strap,retaining
Graybar Electric Company, Inc.
5120-00-473-74816296184 INTERCHANGEABLE
Replacer Oil Seal
U S Army Tank Automotive Command Amsta-Im-Mm
5985-00-553-5924 INTERCHANGEABLE
Antenna
5342-00-629-4073L1-1 INTERCHANGEABLE
Clamp
Roller Bearing Co of America, Inc Div Pic Design
5360-00-663-2271220G INTERCHANGEABLE
Spring,helical,torsion
Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc
5950-00-712-6107 INTERCHANGEABLE
Saturable Reactor
Cross-Reference Index
Part NumberManufacturer
2972-63ALT5PCF70 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
1017A0030-1 Northrop Grumman Systems Corporation (USA)
944-110PC23 Huntington Ingalls Inc Div Newport News Shipbuilding (USA)
64657AX Oshkosh Defense Llc (USA)
L11 Uniflite Inc (USA)
SS564-8700-938045 Atwater Strong Inc (USA)
4738-4-4B PRIMARY Danfoss Power Solutions II, Llc (USA)
12367320-1 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
6445028 Ed Etnyre & Co (USA)
SS564-8700-938045PCF70 PRIMARY Naval Ship Systems Command (USA)
PC5189292 Power Components (deutschland) Gmbh (DEU)
400949-002 Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc (USA)
13230E6885 Cecom Lr Center (USA)
926 Elliott Machine Works Inc (USA)
64657AX Oshkosh Corp (USA)
5189292 PRIMARY Rolls-Royce Solutions America Inc (USA)
008351-9 Sea Cure Technology, Inc (USA)
30182-4-4B Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division (USA)
539790-2 Raytheon Company Dba Raytheon (USA)
698020 C-Tech Industries Inc (USA)
Related Parts
9905-00-045-3627INTERCHANGEABLE
HOLDER,CARD-LABEL
L-11
3120-00-148-7742INTERCHANGEABLE
BUSHING,SLEEVE
L11
6240-00-151-5209INTERCHANGEABLE
LAMP,INCANDESCENT
5120-00-189-2985INTERCHANGEABLE
KEY,SOCKET HEAD SCREW
5340-00-194-2814INTERCHANGEABLE
STRAP,RETAINING
24-80011
5120-00-473-7481INTERCHANGEABLE
REPLACER OIL SEAL
6296184
5985-00-553-5924INTERCHANGEABLE
ANTENNA
5342-00-629-4073INTERCHANGEABLE
CLAMP
L1-1
5360-00-663-2271INTERCHANGEABLE
SPRING,HELICAL,TORSION
220G
5950-00-712-6107INTERCHANGEABLE
SATURABLE REACTOR
5935-00-965-9864INTERCHANGEABLE
JACK,TELEPHONE
L11
5365-01-095-9738INTERCHANGEABLE
SPACER,RING
008351

Frequently Asked Questions

What is NSN 4730-00-028-7021?

NSN 4730-00-028-7021 is a Adapter,straight,pipe to Hose, manufactured by Danfoss Power Solutions II, Llc, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-028-7021?

NSN 4730-00-028-7021 has 27 cross-referenced part numbers: 2972-63ALT5PCF70 (Electric Boat Corporation Div General Dynamics Electric Boat), 1017A0030-1 (Northrop Grumman Systems Corporation), 944-110PC23 (Huntington Ingalls Inc Div Newport News Shipbuilding), 64657AX (Oshkosh Defense Llc), L11 (Uniflite Inc) and 22 more.

What NSN replaces 4730-00-028-7021?

There are 12 known substitutes for 4730-00-028-7021: 9905-00-045-3627, 3120-00-148-7742, 6240-00-151-5209 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4738-4-4B?

Key specifications for 4738-4-4B: End Item Identification: BRF ENGINE, AIRCRAFT, TF39-GE-1 (C-5A);2320-01-442-1940,TRUCK,CBT,(COMMAND BRIDGE TRANSPORTER),3990-01-444-6174 BITUM DISTRIBUTOR A; Seat Angle: 30.0 DEGREES FIRST END; Nominal Thread Size: 0.250 INCHES FIRST END IN; Thread Series Designator: NPTF FIRST END. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-028-7021 still in active supply?

NSN 4730-00-028-7021 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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