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2621-791-02ASSY41 — THREAD PIECE,UNION

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

2621-791-02ASSY41: THREAD PIECE,UNION.

The THREAD PIECE,UNION is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304, seat_type: STRAIGHT FACE, overall_length: 2.395 INCHES NOMINAL IN, end_connection_type: BRAZED, union_end_thread_size: 1-3/4-12, union_end_thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-138-2480, 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
2621-791-02ASSY41
NSN: 4730-01-138-2480
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
materialSTEEL COMP 304
seat_typeSTRAIGHT FACE
overall_length2.395 INCHES NOMINAL IN
end_connection_typeBRAZED
union_end_thread_size1-3/4-12
union_end_thread_directionRIGHT-HAND
nominal_pipe_size_designation0.875 INCHES IN
union_end_screw_thread_series_designatorUN
NSN4730-01-138-2480
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 2621-791-02ASSY41 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
UNION END THREAD DIRECTION: RIGHT-HAND
•
NOMINAL PIPE SIZE DESIGNATION: 0.875 INCHES IN
•
END CONNECTION TYPE: BRAZED
•
UNION END THREAD SIZE: 1-3/4-12
•
SEAT TYPE: STRAIGHT FACE
•
UNION END SCREW THREAD SERIES DESIGNATOR: UN
•
MATERIAL: STEEL COMP 304
TECHNICAL CHARACTERISTICS
UNION END THREAD DIRECTIONRIGHT-HAND
NOMINAL PIPE SIZE DESIGNATION0.875 INCHES IN
END CONNECTION TYPEBRAZED
UNION END THREAD SIZE1-3/4-12
OVERALL LENGTH2.395 INCHES NOMINAL IN
SEAT TYPESTRAIGHT FACE
UNION END SCREW THREAD SERIES DESIGNATORUN
MATERIALSTEEL COMP 304
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 2
262179102-42AReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
516-4682325 F30Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 2621-791-02ASSY41?
2621-791-02ASSY41 is a THREAD PIECE,UNION.
What parts can replace 2621-791-02ASSY41?
There are 2 known substitutes for 2621-791-02ASSY41: 262179102-42A, 516-4682325 F30. Substitute compatibility should be verified for your specific system.
What is the NSN for 2621-791-02ASSY41?
2621-791-02ASSY41 is cataloged in the U.S. Government catalog under NSN 4730-01-138-2480. 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.