PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2-4-4Adapter,straight,pipe to Tube

Formrite Tube Co · NSN 4730-00-755-7729 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-755-7729 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-755-7729. Primary manufacturer part number: 2-4-4.
Features
  • Adapter,straight,pipe to Tube — FSC 4730
  • Thread Series Designator: NPT SECOND END
  • Nominal Pipe Size Accommodated: 0.375 INCHES SECOND END IN
  • Material: STEEL OVERALL
  • Connection Style: PLAIN (PIPE) SECOND END
  • Connection Style: FLARED (TUBE) FIRST END
  • Thread Series Designator: UNF FIRST END
  • Connection Type: THREADED INTERNAL TUBE FIRST END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Overall construction
General Description

The Adapter,straight,pipe to Tube, cataloged under National Stock Number 4730-00-755-7729, 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 Formrite Tube Co. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-755-7729
Primary Part Number2-4-4
Item NameAdapter,straight,pipe to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerFormrite Tube Co
StatusACTIVE
Thread Series DesignatorNPT SECOND END
Nominal Pipe Size Accommodated0.375 INCHES SECOND END IN
MaterialSTEEL OVERALL
Connection StylePLAIN (PIPE) SECOND END
Connection StyleFLARED (TUBE) FIRST END
Thread Series DesignatorUNF FIRST END
Connection TypeTHREADED INTERNAL TUBE FIRST END
Surface TreatmentCADMIUM OVERALL
Nominal Outside Diameter Tube Accommodated0.250 INCHES FIRST END IN
Nominal Overall Length1.375 INCHES IN
Nominal Thread Size0.375 INCHES SECOND END IN
Nominal Thread Size0.437 INCHES FIRST END IN
Seat Angle37.0 DEGREES FIRST END
Connection TypeTHREADED EXTERNAL PIPE SECOND END
Thread Class2A FIRST END A
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
3110-00-156-6867206703-7 INTERCHANGEABLE
Bearing,ball,annular
Naval Sea Systems Command
5120-00-228-9507J1218TF INTERCHANGEABLE
Wrench,box and Open End,combinat
The Stanley Works Dba Stanley Proto
3810-00-730-6189202-0011 INTERCHANGEABLE
Ventilator,cab
Cmc of Georgia, Inc.
5950-00-891-2586202-11 INTERCHANGEABLE
Coil,radio Frequency
Wilco Corp
4820-01-180-1757 INTERCHANGEABLE
Valve,safety Relief
4820-01-180-6691 INTERCHANGEABLE
Valve,safety Relief
5330-01-191-815020211 INTERCHANGEABLE
Retainer,packing
Flowserve Inc
5310-01-196-324920211 INTERCHANGEABLE
Nut,plain,hexagon
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
4810-01-240-004620426 INTERCHANGEABLE
Body,valve
Pneudraulics, Inc.
6640-01-352-0525202-11 INTERCHANGEABLE
Paper,filter
Parker Hannifin Corp
Cross-Reference Index
Part NumberManufacturer
2-4-4 PRIMARY Formrite Tube Co (USA)
20211 Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp. (USA)
Related Parts
3110-00-156-6867INTERCHANGEABLE
BEARING,BALL,ANNULAR
206703-7
5120-00-228-9507INTERCHANGEABLE
WRENCH,BOX AND OPEN END,COMBINAT
J1218TF
3810-00-730-6189INTERCHANGEABLE
VENTILATOR,CAB
202-0011
5950-00-891-2586INTERCHANGEABLE
COIL,RADIO FREQUENCY
202-11
4820-01-180-1757INTERCHANGEABLE
VALVE,SAFETY RELIEF
4820-01-180-6691INTERCHANGEABLE
VALVE,SAFETY RELIEF
5330-01-191-8150INTERCHANGEABLE
RETAINER,PACKING
20211
5310-01-196-3249INTERCHANGEABLE
NUT,PLAIN,HEXAGON
20211
4810-01-240-0046INTERCHANGEABLE
BODY,VALVE
20426
6640-01-352-0525INTERCHANGEABLE
PAPER,FILTER
202-11
8465-01-517-4761INTERCHANGEABLE
DRINKING SYSTEM
20211

Frequently Asked Questions

What is NSN 4730-00-755-7729?

NSN 4730-00-755-7729 is a Adapter,straight,pipe to Tube, manufactured by Formrite Tube Co, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-755-7729?

NSN 4730-00-755-7729 has 2 cross-referenced part numbers: 2-4-4 (Formrite Tube Co), 20211 (Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.).

What NSN replaces 4730-00-755-7729?

There are 11 known substitutes for 4730-00-755-7729: 3110-00-156-6867, 5120-00-228-9507, 3810-00-730-6189 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2-4-4?

Key specifications for 2-4-4: Thread Series Designator: NPT SECOND END; Nominal Pipe Size Accommodated: 0.375 INCHES SECOND END IN; Material: STEEL OVERALL; Connection Style: PLAIN (PIPE) SECOND END. 15 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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