PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2620-219X1 PC145Reducer,tube

Electric Boat Corporation Div General Dynamics Electric Boat · NSN 4730-01-202-7008 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-202-7008 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-202-7008. Primary manufacturer part number: 2620-219X1 PC145.
Features
  • Reducer,tube — FSC 4730
  • Thread Class: 3B FIRST END
  • Material: COPPER ALLOY OVERALL
  • Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
  • Thread Series Designator: UNF SECOND END
  • Nominal Outside Diameter Tube Accommodated: 0.250 INCHES SECOND END IN
  • Nominal Thread Size: 0.500 INCHES FIRST END IN
  • Nominal Outside Diameter Tube Accommodated: 0.500 INCHES FIRST END IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy Overall construction
General Description

The Reducer,tube, cataloged under National Stock Number 4730-01-202-7008, 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 Electric Boat Corporation Div General Dynamics Electric Boat. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-202-7008
Primary Part Number2620-219X1 PC145
Item NameReducer,tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerElectric Boat Corporation Div General Dynamics Electric Boat
StatusACTIVE
Thread Class3B FIRST END
MaterialCOPPER ALLOY OVERALL
Reference Number Differentiating CharacteristicsMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS
Thread Series DesignatorUNF SECOND END
Nominal Outside Diameter Tube Accommodated0.250 INCHES SECOND END IN
Nominal Thread Size0.500 INCHES FIRST END IN
Nominal Outside Diameter Tube Accommodated0.500 INCHES FIRST END IN
Nominal Overall Length1.250 INCHES IN
Thread Series DesignatorUNF FIRST END
Criticality Code JustificationZZZY
Connection StyleFLARED (TUBE) SECOND END
Thread Class3A SECOND END A
Connection TypeTHREADED INTERNAL TUBE FIRST END
Nominal Thread Size0.250 INCHES SECOND END IN
Reducer TypeCONCENTRIC
Connection TypeTHREADED EXTERNAL TUBE SECOND END
Connection StyleDOUBLE COMPRESSION (TUBE) FIRST END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4730-00-595-27623691-54REVAPC13 INTERCHANGEABLE
Reducer,tube
Electric Boat Corporation Div General Dynamics Electric Boat
4730-01-160-5765 INTERCHANGEABLE
Reducer,tube
Cross-Reference Index
Part NumberManufacturer
2620-219X1 PC145 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
845-1889863 PC145 Naval Ship Systems Command (USA)
UR3-84 Superior Valve Co (USA)
Related Parts
4730-00-595-2762INTERCHANGEABLE
REDUCER,TUBE
3691-54REVAPC13
4730-01-160-5765INTERCHANGEABLE
REDUCER,TUBE

Frequently Asked Questions

What is NSN 4730-01-202-7008?

NSN 4730-01-202-7008 is a Reducer,tube, manufactured by Electric Boat Corporation Div General Dynamics Electric Boat, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-202-7008?

NSN 4730-01-202-7008 has 3 cross-referenced part numbers: 2620-219X1 PC145 (Electric Boat Corporation Div General Dynamics Electric Boat), 845-1889863 PC145 (Naval Ship Systems Command), UR3-84 (Superior Valve Co).

What NSN replaces 4730-01-202-7008?

There are 2 known substitutes for 4730-01-202-7008: 4730-00-595-2762, 4730-01-160-5765. Verify interchangeability with system specifications before substitution.

What are the specifications of 2620-219X1 PC145?

Key specifications for 2620-219X1 PC145: Thread Class: 3B FIRST END; Material: COPPER ALLOY OVERALL; Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS; Thread Series Designator: UNF SECOND END. 17 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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