PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

503-4556027 ITEM 63Tee,tube

Huntington Ingalls Inc Div Newport News Shipbuilding · NSN 4730-01-178-8462 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-178-8462 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-178-8462. Primary manufacturer part number: 503-4556027 ITEM 63.
Features
  • Tee,tube — FSC 4730
  • Tubing Wall Nominal Thickness for Which Designed: 0.035 INCHES SECOND END IN
  • Tubing Wall Nominal Thickness for Which Designed: 0.035 INCHES FIRST END IN
  • Connection Type: UNTHREADED INTERNAL TUBE SECOND END
  • Nominal Outside Diameter Tube Accommodated: 0.500 INCHES SECOND END IN
  • Material: COPPER ALLOY OVERALL
  • Nominal Outside Diameter Tube Accommodated: 0.750 INCHES FIRST END IN
  • Connection Type: UNTHREADED INTERNAL TUBE FIRST END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy Overall construction
General Description

The Tee,tube, cataloged under National Stock Number 4730-01-178-8462, 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 Huntington Ingalls Inc Div Newport News Shipbuilding. Government technical data includes 7 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-178-8462
Primary Part Number503-4556027 ITEM 63
Item NameTee,tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerHuntington Ingalls Inc Div Newport News Shipbuilding
StatusACTIVE
Tubing Wall Nominal Thickness for Which Designed0.035 INCHES SECOND END IN
Tubing Wall Nominal Thickness for Which Designed0.035 INCHES FIRST END IN
Connection TypeUNTHREADED INTERNAL TUBE SECOND END
Nominal Outside Diameter Tube Accommodated0.500 INCHES SECOND END IN
MaterialCOPPER ALLOY OVERALL
Nominal Outside Diameter Tube Accommodated0.750 INCHES FIRST END IN
Connection TypeUNTHREADED INTERNAL TUBE FIRST END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6930-00-346-7188267057 INTERCHANGEABLE
Accelermeter
Cae Usa Inc.
4730-00-477-5072A16447 INTERCHANGEABLE
Cap,tube
Mueller Brass Co.
4730-01-157-7963 INTERCHANGEABLE
Adapter,straight,tube to Boss
4730-01-157-7964202220-4-4S INTERCHANGEABLE
Adapter,straight,tube to Boss
Danfoss Power Solutions II, Llc
4730-01-178-8461 INTERCHANGEABLE
Tee,tube
4730-01-178-8463 INTERCHANGEABLE
Tee,tube
4730-01-178-8465 INTERCHANGEABLE
Reducer,tube
4730-01-178-8466202220-8-8S INTERCHANGEABLE
Adapter,straight,tube to Boss
Danfoss Power Solutions II, Llc
4730-01-179-2910 INTERCHANGEABLE
Reducer,tube
4730-01-179-5470 INTERCHANGEABLE
Coupling Half,self-Sealing
Cross-Reference Index
Part NumberManufacturer
503-4556027 ITEM 63 Huntington Ingalls Inc Div Newport News Shipbuilding (USA)
2670-57 Huntington Ingalls Inc Div Newport News Shipbuilding (USA)
2670-57 ITEM 63 Huntington Ingalls Inc Div Newport News Shipbuilding (USA)
Related Parts
6930-00-346-7188INTERCHANGEABLE
ACCELERMETER
267057
4730-00-477-5072INTERCHANGEABLE
CAP,TUBE
A16447
4730-01-157-7963INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO BOSS
4730-01-157-7964INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO BOSS
202220-4-4S
4730-01-178-8461INTERCHANGEABLE
TEE,TUBE
4730-01-178-8463INTERCHANGEABLE
TEE,TUBE
4730-01-178-8465INTERCHANGEABLE
REDUCER,TUBE
4730-01-178-8466INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO BOSS
202220-8-8S
4730-01-179-2910INTERCHANGEABLE
REDUCER,TUBE
4730-01-179-5470INTERCHANGEABLE
COUPLING HALF,SELF-SEALING
4730-01-179-5471INTERCHANGEABLE
COUPLING HALF,SELF-SEALING
4730-01-180-0926INTERCHANGEABLE
COUPLING HALF,SELF-SEALING

Frequently Asked Questions

What is NSN 4730-01-178-8462?

NSN 4730-01-178-8462 is a Tee,tube, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-178-8462?

NSN 4730-01-178-8462 has 3 cross-referenced part numbers: 503-4556027 ITEM 63 (Huntington Ingalls Inc Div Newport News Shipbuilding), 2670-57 (Huntington Ingalls Inc Div Newport News Shipbuilding), 2670-57 ITEM 63 (Huntington Ingalls Inc Div Newport News Shipbuilding).

What NSN replaces 4730-01-178-8462?

There are 12 known substitutes for 4730-01-178-8462: 6930-00-346-7188, 4730-00-477-5072, 4730-01-157-7963 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 503-4556027 ITEM 63?

Key specifications for 503-4556027 ITEM 63: Tubing Wall Nominal Thickness for Which Designed: 0.035 INCHES SECOND END IN; Tubing Wall Nominal Thickness for Which Designed: 0.035 INCHES FIRST END IN; Connection Type: UNTHREADED INTERNAL TUBE SECOND END; Nominal Outside Diameter Tube Accommodated: 0.500 INCHES SECOND END IN. 7 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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