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139-8656 — TUBE ASSEMBLY,METAL

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

139-8656: TUBE ASSEMBLY,METAL.

The TUBE ASSEMBLY,METAL is a the manufacturer industrial component. Key specifications include design_form: STRAIGHT, mating_end_quantity: 2 ALL ENDS, end_connection_style: SWIVEL NUT, COMPRESSION ALL ENDS, media_for_which_designed: FUEL, connection_special_design: UNION ALL ENDS, part_name_assigned_by_controlling_agency: FUEL LINE. This part is cataloged in the U.S.

Government catalog under NSN 4710-01-706-3538, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
139-8656
NSN: 4710-01-706-3538
FSC: 4710 — Pipe, Tube and Rigid Tubing
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
design_formSTRAIGHT
mating_end_quantity2 ALL ENDS
end_connection_styleSWIVEL NUT, COMPRESSION ALL ENDS
media_for_which_designedFUEL
connection_special_designUNION ALL ENDS
part_name_assigned_by_controlling_agencyFUEL LINE
NSN4710-01-706-3538
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 139-8656 · OEM ⚠ VERIFY BEFORE ORDERING Schedule = wall thickness, NOT pipe diameter. Sch 40 and Sch 80 have the same OD but different wall thickness. Nominal pipe size ≠ actual OD — a 1" pipe is actually 1.315" OD ✓ BROKER TIP Sch 40 = standard wall, Sch 80 = heavy wall (higher pressure), Sch 160 = extra heavy. Seamless pipe is required for high-pressure applications — welded pipe has lower ratings PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
DESIGN FORM: STRAIGHT
•
MATING END QUANTITY: 2 ALL ENDS
•
END CONNECTION STYLE: SWIVEL NUT, COMPRESSION ALL ENDS
•
MEDIA FOR WHICH DESIGNED: FUEL
•
CONNECTION SPECIAL DESIGN: UNION ALL ENDS
TECHNICAL CHARACTERISTICS
DESIGN FORMSTRAIGHT
MATING END QUANTITY2 ALL ENDS
END CONNECTION STYLESWIVEL NUT, COMPRESSION ALL ENDS
MEDIA FOR WHICH DESIGNEDFUEL
PART NAME ASSIGNED BY CONTROLLING AGENCYFUEL LINE
CONNECTION SPECIAL DESIGNUNION ALL ENDS
OTHER ITEMS IN FSC 4710 — Pipe, Tube and Rigid Tubing
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4710-00-001-0080 4710-00-001-0081 4710-00-001-0082 4710-00-001-1229 4710-00-001-1676 4710-00-001-1686 4710-00-001-1688 4710-00-001-1691
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 139-8656?
139-8656 is a TUBE ASSEMBLY,METAL.
What is the NSN for 139-8656?
139-8656 is cataloged in the U.S. Government catalog under NSN 4710-01-706-3538. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.