PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1/2-NPTPlug,pipe

Naval Sea Systems Command · NSN 4730-01-413-8271 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-413-8271 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-413-8271. Primary manufacturer part number: 1/2-NPT.
Features
  • Plug,pipe — FSC 4730
  • Nominal Thread Size: 0.500 INCHES EXTERNAL IN
  • Thread Series Designator: NPT EXTERNAL
  • Material: STEEL CORROSION RESISTING OVERALL
  • 3 verified cross-references
  • Primary manufacturer: Naval Sea Systems Command
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Plug,pipe, cataloged under National Stock Number 4730-01-413-8271, 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 Naval Sea Systems Command. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-413-8271
Primary Part Number1/2-NPT
Item NamePlug,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerNaval Sea Systems Command
StatusACTIVE
Nominal Thread Size0.500 INCHES EXTERNAL IN
Thread Series DesignatorNPT EXTERNAL
MaterialSTEEL CORROSION RESISTING OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
4730-00-249-3935 INTERCHANGEABLE
Elbow,pipe
4730-01-382-1113 INTERCHANGEABLE
Plug,pipe
3020-01-414-7959835-6556499 INTERCHANGEABLE
Gear,internal
Naval Sea Systems Command
4820-01-415-4349845-6603141-84 INTERCHANGEABLE
Gear Operator,valve
Naval Sea Systems Command
4730-01-518-37591/2 NPT INTERCHANGEABLE
Coupling,pipe
Mcmaster-Carr Supply Co
Cross-Reference Index
Part NumberManufacturer
1/2-NPT PRIMARY Naval Sea Systems Command (USA)
845-6603141-157 Naval Sea Systems Command (USA)
6603141 Naval Sea Systems Command (USA)
Related Parts
4730-00-249-3935INTERCHANGEABLE
ELBOW,PIPE
4730-01-382-1113INTERCHANGEABLE
PLUG,PIPE
3020-01-414-7959INTERCHANGEABLE
GEAR,INTERNAL
835-6556499
4820-01-415-4349INTERCHANGEABLE
GEAR OPERATOR,VALVE
845-6603141-84
4730-01-518-3759INTERCHANGEABLE
COUPLING,PIPE
1/2 NPT

Frequently Asked Questions

What is NSN 4730-01-413-8271?

NSN 4730-01-413-8271 is a Plug,pipe, manufactured by Naval Sea Systems Command, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-413-8271?

NSN 4730-01-413-8271 has 3 cross-referenced part numbers: 1/2-NPT (Naval Sea Systems Command), 845-6603141-157 (Naval Sea Systems Command), 6603141 (Naval Sea Systems Command).

What NSN replaces 4730-01-413-8271?

There are 5 known substitutes for 4730-01-413-8271: 4730-00-249-3935, 4730-01-382-1113, 3020-01-414-7959 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1/2-NPT?

Key specifications for 1/2-NPT: Nominal Thread Size: 0.500 INCHES EXTERNAL IN; End Item Identification: VALVE SWING,SEAWOLF CLASS SSN; Thread Series Designator: NPT EXTERNAL; Material: STEEL CORROSION RESISTING OVERALL. 4 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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