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753520 — THREAD PIECE,UNION

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

753520: THREAD PIECE,UNION.

The THREAD PIECE,UNION is a the manufacturer industrial component. Key specifications include material: STEEL, overall_width: 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN, overall_length: 3.107 INCHES NOMINAL IN, end_item_identification: C-17 AIRCRAFT, part_name_assigned_by_controlling_agency: ROD, CONTROL. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-540-4149, 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
753520
NSN: 4730-00-540-4149
NIINs: 005404149, 015424213
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL
overall_width0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN
overall_length3.107 INCHES NOMINAL IN
end_item_identificationC-17 AIRCRAFT
part_name_assigned_by_controlling_agencyROD, CONTROL
NSN4730-00-540-4149
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 753520 · 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
•
STRENGTH RATING: ERR-060
•
END CONNECTION TYPE: THREADED
•
UNION END THREAD SIZE: 3/4IN-16 IN
•
SEAT TYPE: BALL
•
THREAD DIRECTION: RIGHT-HAND
•
SEAT RADIUS: 0.625 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
UNION END THREAD DIRECTIONRIGHT-HAND
STRENGTH RATINGERR-060
END CONNECTION TYPETHREADED
UNION END THREAD SIZE3/4IN-16 IN
OVERALL LENGTH1.531 INCHES NOMINAL IN
SEAT TYPEBALL
THREAD DIRECTIONRIGHT-HAND
SEAT RADIUS0.625 INCHES NOMINAL IN
THREAD SIZE3/4-16
SCREW THREAD SERIES DESIGNATORUNF
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 753520?
753520 is a THREAD PIECE,UNION.
What is the NSN for 753520?
753520 is cataloged in the U.S. Government catalog under NSN 4730-00-540-4149. 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.