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3-66780 — TUBE AND FITTINGS,METALLIC

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

3-66780: TUBE AND FITTINGS,METALLIC.

The TUBE AND FITTINGS,METALLIC is a the manufacturer industrial component. Key specifications include design_form: STRAIGHT, overall_length: 22.500 INCHES NOMINAL IN, wall_thickness: 0.095 INCHES NOMINAL IN, special_features: WELDED YOKE ON ONE END; OTHER END IS STUB END, mating_end_quantity: 1 FIRST END, tube_outside_diameter: 2.500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4710-00-451-1807, 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
3-66780
NSN: 4710-00-451-1807
FSC: 4710 — Pipe, Tube and Rigid Tubing
CAGE: 77873 — ROCKFORD POWERTRAIN INC DIV POWERTRAIN ROCKFORD, INC. (USA)
SPECIFICATIONS
design_formSTRAIGHT
overall_length22.500 INCHES NOMINAL IN
wall_thickness0.095 INCHES NOMINAL IN
special_featuresWELDED YOKE ON ONE END; OTHER END IS STUB END
mating_end_quantity1 FIRST END
tube_outside_diameter2.500 INCHES NOMINAL IN
NSN4710-00-451-1807
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 3-66780 · 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: 1 SECOND END
•
WALL THICKNESS: 0.095 INCHES NOMINAL IN
•
TUBE OUTSIDE DIAMETER: 2.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
DESIGN FORMSTRAIGHT
MATING END QUANTITY1 SECOND END
MATING END QUANTITY1 FIRST END
OVERALL LENGTH22.500 INCHES NOMINAL IN
WALL THICKNESS0.095 INCHES NOMINAL IN
TUBE OUTSIDE DIAMETER2.500 INCHES NOMINAL IN
SPECIAL FEATURESWELDED YOKE ON ONE END; OTHER END IS STUB END
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 1
42-20194-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3-66780?
3-66780 is a TUBE AND FITTINGS,METALLIC.
What parts can replace 3-66780?
There is 1 known substitute for 3-66780: 42-20194-1. Substitute compatibility should be verified for your specific system.
What is the NSN for 3-66780?
3-66780 is cataloged in the U.S. Government catalog under NSN 4710-00-451-1807. 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.