PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20391Tube Assembly,metal

Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp. · NSN 4710-00-756-0878 · FSC 4710 · No Item Name Available
Verified by PartsTable
NSN 4710-00-756-0878 — this item is cataloged by the U.S. Government under National Stock Number 4710-00-756-0878. Primary manufacturer part number: 20391.
Features
  • Tube Assembly,metal — FSC 4710
  • End Connection Style: FLARED SECOND END
  • Seat Angle in Deg: 37.0 SECOND END
  • Mating End Quantity: 1 SECOND END
  • Nominal Thread Size: 0.875 INCHES SECOND END IN
  • Material: STEEL TUBING
  • Thread Series Designator: UNF SECOND END
  • Nominal Thread Size: 1.062 INCHES FIRST END IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Tubing construction
General Description

The Tube Assembly,metal, cataloged under National Stock Number 4710-00-756-0878, is classified within Federal Supply Class 4710 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.. Government technical data includes 19 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4710-00-756-0878
Primary Part Number20391
Item NameTube Assembly,metal
FSC / FSG4710 / 47 — No Item Name Available
ManufacturerTiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.
StatusACTIVE
End Connection StyleFLARED SECOND END
Seat Angle in Deg37.0 SECOND END
Mating End Quantity1 SECOND END
Nominal Thread Size0.875 INCHES SECOND END IN
MaterialSTEEL TUBING
Thread Series DesignatorUNF SECOND END
Nominal Thread Size1.062 INCHES FIRST END IN
Tube Outside Diameter0.750 INCHES NOMINAL IN
End Connection StyleSWIVEL NUT WITH LOOSE OR INTEGRAL CLINCH SLEEVE FIRST END
Design FormPREBENT
MaterialSTEEL SINGLE END
Seat Angle in Deg37.0 FIRST END
Wall Thickness0.125 INCHES NOMINAL IN
Thread Class2B FIRST END
Thread DirectionRIGHT-HAND FIRST END
Thread DirectionRIGHT-HAND SECOND END
Mating End Quantity1 FIRST END
Thread Class2A SECOND END A
Thread Series DesignatorUN-12 FIRST END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
2930-00-005-507720391 INTERCHANGEABLE
Element,cooler
Cummins Inc.
5835-00-059-58542039-1 INTERCHANGEABLE
Drum,turntable
Atis Systems Gmbh
1680-00-082-3376 INTERCHANGEABLE
Screwshaft and Nut,actuator
5935-00-392-73142039-1 INTERCHANGEABLE
Shell,connector
Diamond Manufacturing Company
4730-00-908-3194 INTERCHANGEABLE
Clamp,hose
2805-01-264-476620391 INTERCHANGEABLE
Deflector,dirt and Liquid
L & R Manufacturing Company
4820-01-442-208120391-01-E-3300 INTERCHANGEABLE
Valve,safety Relief
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-442-208314545006000 INTERCHANGEABLE
Disk,valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4820-01-442-777920391-01-E-3150 INTERCHANGEABLE
Valve,safety Relief
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
6810-01-555-7642 INTERCHANGEABLE
Ortho-Phthaladehyde
Cross-Reference Index
Part NumberManufacturer
20391 PRIMARY Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp. (USA)
Related Parts
2930-00-005-5077INTERCHANGEABLE
ELEMENT,COOLER
20391
5835-00-059-5854INTERCHANGEABLE
DRUM,TURNTABLE
2039-1
1680-00-082-3376INTERCHANGEABLE
SCREWSHAFT AND NUT,ACTUATOR
5935-00-392-7314INTERCHANGEABLE
SHELL,CONNECTOR
2039-1
4730-00-908-3194INTERCHANGEABLE
CLAMP,HOSE
2805-01-264-4766INTERCHANGEABLE
DEFLECTOR,DIRT AND LIQUID
20391
4820-01-442-2081INTERCHANGEABLE
VALVE,SAFETY RELIEF
20391-01-E-3300
4820-01-442-2083INTERCHANGEABLE
DISK,VALVE
14545006000
4820-01-442-7779INTERCHANGEABLE
VALVE,SAFETY RELIEF
20391-01-E-3150
6810-01-555-7642INTERCHANGEABLE
ORTHO-PHTHALADEHYDE

Frequently Asked Questions

What is NSN 4710-00-756-0878?

NSN 4710-00-756-0878 is a Tube Assembly,metal, manufactured by Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp., classified under FSC 4710 (No Item Name Available). Status: active.

What are the part numbers for NSN 4710-00-756-0878?

NSN 4710-00-756-0878 has 1 cross-referenced part number: 20391 (Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.).

What NSN replaces 4710-00-756-0878?

There are 10 known substitutes for 4710-00-756-0878: 2930-00-005-5077, 5835-00-059-5854, 1680-00-082-3376 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20391?

Key specifications for 20391: End Connection Style: FLARED SECOND END; Seat Angle in Deg: 37.0 SECOND END; Mating End Quantity: 1 SECOND END; Nominal Thread Size: 0.875 INCHES SECOND END IN. 19 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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