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Technical Data Sheet
PartsTable / COMPONENT / 1621559
1621559 ✓ Verified by PartsTable
— · PIPE SECTION
WHAT YOU NEED TO KNOW
Schedule = wall thickness, NOT diameter Nominal pipe size != actual OD
Sch 40 and Sch 80 same OD, different wall
PRODUCT OVERVIEW

The TUBING ASSEMBLY,NONMETALLIC is a the manufacturer industrial component. Key specifications include thread_class: 2A SECOND END A, outside_diameter: 5.500 INCHES NOMINAL IN, nominal_thread_size: 5.500 INCHES SECOND END IN, end_connection_design: STRAIGHT ALL ENDS, end_item_identification: 2320-01-522-1859, TRUCK,DUMP, thread_quantity_per_inch: 12 SECOND END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4710-01-572-0662, 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
1621559
NSN: 4710-01-572-0662
FSC: 4710
CAGE: 5X050 — CRYSTEEL MANUFACTURING, INC DBA CRYSTEEL MANUFACTURING INC (USA)
SPECIFICATIONS
thread_class2A SECOND END A
outside_diameter5.500 INCHES NOMINAL IN
nominal_thread_size5.500 INCHES SECOND END IN
end_connection_designSTRAIGHT ALL ENDS
end_item_identification2320-01-522-1859, TRUCK,DUMP
thread_quantity_per_inch12 SECOND END
thread_series_designatorUN SECOND END
cross-sectional_shape_styleROUND
measuring_method_and_length33.813 INCHES NOMINAL EXCLUDING END FITTINGS IN
part_name_assigned_by_controlling_agencyASSY CYLIDER TUBE RC580
NSN4710-01-572-0662
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 1621559 · 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
•
OUTSIDE DIAMETER: 5.500 INCHES NOMINAL IN
•
MEASURING METHOD AND LENGTH: 33.813 INCHES NOMINAL EXCLUDING END FITTINGS IN
•
THREAD SERIES DESIGNATOR: UN SECOND END
•
THREAD QUANTITY PER INCH: 12 SECOND END
•
END CONNECTION DESIGN: STRAIGHT ALL ENDS
•
THREAD CLASS: 2A SECOND END A
•
NOMINAL THREAD SIZE: 5.500 INCHES SECOND END IN
TECHNICAL CHARACTERISTICS (FLIS)
PART NAME ASSIGNED BY CONTROLLING AGENCYASSY CYLIDER TUBE RC580
OUTSIDE DIAMETER5.500 INCHES NOMINAL IN
MEASURING METHOD AND LENGTH33.813 INCHES NOMINAL EXCLUDING END FITTINGS IN
THREAD SERIES DESIGNATORUN SECOND END
THREAD QUANTITY PER INCH12 SECOND END
END CONNECTION DESIGNSTRAIGHT ALL ENDS
THREAD CLASS2A SECOND END A
NOMINAL THREAD SIZE5.500 INCHES SECOND END IN
CROSS-SECTIONAL SHAPE STYLEROUND
END ITEM IDENTIFICATION2320-01-522-1859, TRUCK,DUMP
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
104329Interchangeable
interchangeable cross-reference
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104052STARInterchangeable
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A104329Interchangeable
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VIREX II 256Interchangeable
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4329Interchangeable
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LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1621559?
1621559 is a TUBING ASSEMBLY,NONMETALLIC.
What parts can replace 1621559?
There are 6 known substitutes for 1621559: 104329, 104052STAR, A104329 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1621559?
1621559 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4710-01-572-0662. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026