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LC639-28AE — CONNECTOR,HOSE,BULKHEAD

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

LC639-28AE: CONNECTOR,HOSE,BULKHEAD.

The CONNECTOR,HOSE,BULKHEAD is a the manufacturer industrial component. Key specifications include material: STEEL NUT, connection_type: UNTHREADED EXTERNAL TUBE ALL ENDS, connection_style: GROOVED (TUBE) ALL ENDS, operating_pressure: 125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS, nominal_overall_length: 1.954 INCHES IN, end_item_identification: FUEL AND ECS, FUSELAG. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-706-1393, 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
LC639-28AE
NSN: 4730-01-706-1393
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 24984 — HYDRAFLOW (USA)
SPECIFICATIONS
materialSTEEL NUT
connection_typeUNTHREADED EXTERNAL TUBE ALL ENDS
connection_styleGROOVED (TUBE) ALL ENDS
operating_pressure125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_overall_length1.954 INCHES IN
end_item_identificationFUEL AND ECS, FUSELAG
part_name_assigned_by_controlling_agencyBULKHEAD FITTING ASSEMBLY
nominal_outside_diameter_tube_accommodated1.750 INCHES ALL ENDS IN
NSN4730-01-706-1393
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: LC639-28AE · 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
•
NOMINAL OVERALL LENGTH: 1.954 INCHES IN
•
CONNECTION TYPE: UNTHREADED EXTERNAL TUBE ALL ENDS
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 1.750 INCHES ALL ENDS IN
•
OPERATING PRESSURE: 125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
MATERIAL: STEEL NUT
TECHNICAL CHARACTERISTICS
CONNECTION STYLEGROOVED (TUBE) ALL ENDS
NOMINAL OVERALL LENGTH1.954 INCHES IN
CONNECTION TYPEUNTHREADED EXTERNAL TUBE ALL ENDS
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED1.750 INCHES ALL ENDS IN
OPERATING PRESSURE125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
PART NAME ASSIGNED BY CONTROLLING AGENCYBULKHEAD FITTING ASSEMBLY
END ITEM IDENTIFICATIONFUEL AND ECS, FUSELAG
MATERIALSTEEL NUT
MATERIALALUMINUM ALLOY 2014 BODY
SUBSTITUTES & CROSS-REFERENCES 1
LC639Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 LC639-28AE?
LC639-28AE is a CONNECTOR,HOSE,BULKHEAD.
What parts can replace LC639-28AE?
There is 1 known substitute for LC639-28AE: LC639. Substitute compatibility should be verified for your specific system.
What is the NSN for LC639-28AE?
LC639-28AE is cataloged in the U.S. Government catalog under NSN 4730-01-706-1393. This indicates validated use in U.S. government and defense supply chains.
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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.