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LE273-0037-0004 — NIPPLE,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

LE273-0037-0004: NIPPLE,TUBE.

The NIPPLE,TUBE is a the manufacturer industrial component. Key specifications include material: TITANIUM ALLOY UNS R54520 OVERALL, thread_class: 3A FIRST END BULKHEAD A, connection_type: THREADED EXTERNAL TUBE FIRST END BULKHEAD, connection_style: PLAIN (TUBE) ALL ENDS, style_designator: PLAIN W/ BULKHEAD THREAD, nominal_thread_size: 1.000 INCHES FIRST END BULKHEAD IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-248-8804, 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
LE273-0037-0004
NSN: 4730-01-248-8804
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 43999 — THE BOEING COMPANY DIV LEGACY AM&M (USA)
SPECIFICATIONS
materialTITANIUM ALLOY UNS R54520 OVERALL
thread_class3A FIRST END BULKHEAD A
connection_typeTHREADED EXTERNAL TUBE FIRST END BULKHEAD
connection_stylePLAIN (TUBE) ALL ENDS
style_designatorPLAIN W/ BULKHEAD THREAD
nominal_thread_size1.000 INCHES FIRST END BULKHEAD IN
nominal_overall_length2.153 INCHES IN
thread_quantity_per_inch16 SECOND END
thread_series_designatorUNIFIED NATIONAL JOINT (UNJ) FIRST END BULKHEAD
material_document_and_classificationAMS4965 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
nominal_outside_diameter_tube_accommodated0.750 INCHES ALL ENDS IN
NSN4730-01-248-8804
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: LE273-0037-0004 · 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: PLAIN (TUBE) ALL ENDS
•
NOMINAL OVERALL LENGTH: 2.153 INCHES IN
•
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST END BULKHEAD
•
STYLE DESIGNATOR: PLAIN W/ BULKHEAD THREAD
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS4965 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.750 INCHES ALL ENDS IN
•
NOMINAL THREAD SIZE: 1.000 INCHES FIRST END BULKHEAD IN
TECHNICAL CHARACTERISTICS
CONNECTION STYLEPLAIN (TUBE) ALL ENDS
NOMINAL OVERALL LENGTH2.153 INCHES IN
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END BULKHEAD
CONNECTION TYPETHREADED EXTERNAL TUBE SECOND END
STYLE DESIGNATORPLAIN W/ BULKHEAD THREAD
MATERIAL DOCUMENT AND CLASSIFICATIONAMS4965 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.750 INCHES ALL ENDS IN
NOMINAL THREAD SIZE1.000 INCHES FIRST END BULKHEAD IN
NOMINAL THREAD SIZE1.000 INCHES SECOND END IN
THREAD CLASS3A FIRST END BULKHEAD A
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 3
LE273-0037Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
ST7M229T12Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
R44381T-12Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is LE273-0037-0004?
LE273-0037-0004 is a NIPPLE,TUBE.
What parts can replace LE273-0037-0004?
There are 3 known substitutes for LE273-0037-0004: LE273-0037, ST7M229T12, R44381T-12. Substitute compatibility should be verified for your specific system.
What is the NSN for LE273-0037-0004?
LE273-0037-0004 is cataloged in the U.S. Government catalog under NSN 4730-01-248-8804. 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.