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R-TBD-654 — TUBE ASSEMBLY,METAL

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

R-TBD-654: TUBE ASSEMBLY,METAL.

The TUBE ASSEMBLY,METAL is a the manufacturer industrial component. Key specifications include material: STEEL COMP 321 TUBING, design_form: STRAIGHT, overall_length: 5.500 INCHES NOMINAL IN, wall_thickness: 0.058 INCHES NOMINAL IN, mating_end_quantity: 3 SINGLE END, end_connection_style: SWIVEL NUT, FLARE SINGLE END. This part is cataloged in the U.S.

Government catalog under NSN 4710-01-177-4152, 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
R-TBD-654
NSN: 4710-01-177-4152
FSC: 4710 — Pipe, Tube and Rigid Tubing
CAGE: 43999 — THE BOEING COMPANY DIV LEGACY AM&M (USA)
SPECIFICATIONS
materialSTEEL COMP 321 TUBING
design_formSTRAIGHT
overall_length5.500 INCHES NOMINAL IN
wall_thickness0.058 INCHES NOMINAL IN
mating_end_quantity3 SINGLE END
end_connection_styleSWIVEL NUT, FLARE SINGLE END
tube_outside_diameter0.375 INCHES NOMINAL IN
end_item_identificationB-1B AIRCRAFT
material_document_and_classificationMIL-T-8808, COMP 321 MIL SPEC SINGLE MATERIAL RESPONSE TUBING
NSN4710-01-177-4152
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: R-TBD-654 · 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: 3 SINGLE END
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-T-8808, COMP 321 MIL SPEC SINGLE MATERIAL RESPONSE TUBING
•
WALL THICKNESS: 0.058 INCHES NOMINAL IN
•
END CONNECTION STYLE: SWIVEL NUT, FLARE SINGLE END
•
TUBE OUTSIDE DIAMETER: 0.375 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
DESIGN FORMSTRAIGHT
MATING END QUANTITY3 SINGLE END
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-T-8808, COMP 321 MIL SPEC SINGLE MATERIAL RESPONSE TUBING
OVERALL LENGTH5.500 INCHES NOMINAL IN
WALL THICKNESS0.058 INCHES NOMINAL IN
END CONNECTION STYLESWIVEL NUT, FLARE SINGLE END
TUBE OUTSIDE DIAMETER0.375 INCHES NOMINAL IN
SPECIAL FEATURES41B60000-003 TUBE // END FITTING A&B: 4730-00-595-3102 SLEEVE X 4730-00-203-2661 NUT X RD191-2002-1114 ROPE, WIRE X 41B60000-007 PLUG(MAKE FROM: 4730-00-585-6567) // BETWEEN END FITTING A&B: 41B60000-005 HUB FITTING(1.00 IN.WIDTH, 0.62 IN.THICKNESS, 1.66 IN.LENGTH, STEEL, CRES 321, COND A & SPEC QQ-S-763 CRES BAR) X 4010-01-203-0941 ROPE, WIRE X 4730-00-720-1508 CAP ASSEMBY // 4030-00-431-5536 SLEEVE, SWAGING(QTY.5) // OPERATING PRESSURE: 4,000 PSI MAX. X PROOF: 8,000 PSI // THIS ITEM IS USED TO: OBTAIN ACCURATE PRESSURE READING IN
END ITEM IDENTIFICATIONB-1B AIRCRAFT
MATERIALSTEEL COMP 321 TUBING
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
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is R-TBD-654?
R-TBD-654 is a TUBE ASSEMBLY,METAL.
What is the NSN for R-TBD-654?
R-TBD-654 is cataloged in the U.S. Government catalog under NSN 4710-01-177-4152. 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.