PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2N3378Elbow,pipe to Tube

Caterpillar Inc Div Caterpillar Defense · NSN 4730-01-066-4621 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-066-4621 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-066-4621. Primary manufacturer part number: 2N3378.
Features
  • Elbow,pipe to Tube — FSC 4730
  • Nominal Outside Diameter Tube Accommodated: 0.500 INCHES FIRST END IN
  • Leg Length: 1.469 INCHES NOMINAL SECOND END IN
  • Nominal Thread Size: 0.500 INCHES SECOND END IN
  • Connection Type: THREADED EXTERNAL PIPE SECOND END
  • Connection Style: FLARED (TUBE) FIRST END
  • Seat Angle: 37.0 DEGREES FIRST END
  • Thread Series Designator: UNF FIRST END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Overall construction
General Description

The Elbow,pipe to Tube, cataloged under National Stock Number 4730-01-066-4621, 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 Caterpillar Inc Div Caterpillar Defense. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-066-4621
Primary Part Number2N3378
Item NameElbow,pipe to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusACTIVE
Nominal Outside Diameter Tube Accommodated0.500 INCHES FIRST END IN
Leg Length1.469 INCHES NOMINAL SECOND END IN
Nominal Thread Size0.500 INCHES SECOND END IN
Connection TypeTHREADED EXTERNAL PIPE SECOND END
Connection StyleFLARED (TUBE) FIRST END
Seat Angle37.0 DEGREES FIRST END
Thread Series DesignatorUNF FIRST END
MaterialSTEEL OVERALL
Nominal Thread Size0.750 INCHES FIRST END IN
Leg Length1.406 INCHES NOMINAL FIRST END IN
Connection TypeTHREADED EXTERNAL TUBE FIRST END
Thread Series DesignatorNPTF SECOND END
Thread Class3A FIRST END A
Connection StylePLAIN (PIPE) SECOND END
Flow Angle90.0 DEGREES
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5961-00-824-5221 INTERCHANGEABLE
Transistor
Cross-Reference Index
Part NumberManufacturer
2N3378 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
Related Parts
5961-00-824-5221INTERCHANGEABLE
TRANSISTOR

Frequently Asked Questions

What is NSN 4730-01-066-4621?

NSN 4730-01-066-4621 is a Elbow,pipe to Tube, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-066-4621?

NSN 4730-01-066-4621 has 1 cross-referenced part number: 2N3378 (Caterpillar Inc Div Caterpillar Defense).

What NSN replaces 4730-01-066-4621?

There is 1 known substitute for 4730-01-066-4621: 5961-00-824-5221. Verify interchangeability with system specifications before substitution.

What are the specifications of 2N3378?

Key specifications for 2N3378: Nominal Outside Diameter Tube Accommodated: 0.500 INCHES FIRST END IN; Leg Length: 1.469 INCHES NOMINAL SECOND END IN; Nominal Thread Size: 0.500 INCHES SECOND END IN; Connection Type: THREADED EXTERNAL 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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