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LC639-16AE — UNION,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

LC639-16AE: UNION,TUBE.

The UNION,TUBE is a the manufacturer industrial component. Key specifications include material: ALUMINUM BODY, connection_type: UNTHREADED TUBE W/FORMED END ALL ENDS BULKHEAD, connection_style: GROOVED (TUBE) ALL ENDS BULKHEAD, style_designator: PLAIN W/ BULKHEAD THREAD, surface_treatment: ANODIZE BODY, operating_pressure: 125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-706-2250, 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
LC639-16AE
NSN: 4730-01-706-2250
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 24984 — HYDRAFLOW (USA)
SPECIFICATIONS
materialALUMINUM BODY
connection_typeUNTHREADED TUBE W/FORMED END ALL ENDS BULKHEAD
connection_styleGROOVED (TUBE) ALL ENDS BULKHEAD
style_designatorPLAIN W/ BULKHEAD THREAD
surface_treatmentANODIZE BODY
operating_pressure125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size1.375 INCHES CENTER BULKHEAD IN
nominal_overall_length1.954 INCHES IN
end_item_identificationFUEL AND ECS, FUSELAG
nominal_outside_diameter1.263 INCHES ALL ENDS IN
thread_quantity_per_inch12 CENTER BULKHEAD
thread_series_designatorUNF FIRST END
NSN4730-01-706-2250
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: LC639-16AE · 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
•
CONNECTION STYLE: GROOVED (TUBE) ALL ENDS BULKHEAD
•
NOMINAL OVERALL LENGTH: 1.954 INCHES IN
•
CONNECTION TYPE: UNTHREADED TUBE W/FORMED END ALL ENDS BULKHEAD
•
STYLE DESIGNATOR: PLAIN W/ BULKHEAD THREAD
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 1.0 INCHES ALL ENDS IN
•
OPERATING PRESSURE: 125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
NOMINAL THREAD SIZE: 1.375 INCHES CENTER BULKHEAD IN
•
NOMINAL OUTSIDE DIAMETER: 1.263 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS
CONNECTION STYLEGROOVED (TUBE) ALL ENDS BULKHEAD
NOMINAL OVERALL LENGTH1.954 INCHES IN
CONNECTION TYPEUNTHREADED TUBE W/FORMED END ALL ENDS BULKHEAD
STYLE DESIGNATORPLAIN W/ BULKHEAD THREAD
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED1.0 INCHES ALL ENDS IN
OPERATING PRESSURE125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
NOMINAL THREAD SIZE1.375 INCHES CENTER BULKHEAD IN
NOMINAL OUTSIDE DIAMETER1.263 INCHES ALL ENDS IN
SURFACE TREATMENTANODIZE BODY
END ITEM IDENTIFICATIONFUEL AND ECS, FUSELAG
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

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 LC639-16AE?
LC639-16AE is a UNION,TUBE.
What is the NSN for LC639-16AE?
LC639-16AE is cataloged in the U.S. Government catalog under NSN 4730-01-706-2250. 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.