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12H72-8A — NUT ASSEMBLY,TUBE COUPLING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

12H72-8A: NUT ASSEMBLY,TUBE COUPLING.

The NUT ASSEMBLY,TUBE COUPLING is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024, thread_size: 1.000-16, thread_class: 2B, overall_length: 0.523 INCHES MAXIMUM IN, outside_diameter: 1.126 INCHES MAXIMUM IN, special_features: W/TWO ALUMINUM RETAINING RINGS. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-277-1383, 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
12H72-8A
NSN: 4730-00-277-1383
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 24984 — HYDRAFLOW (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024
thread_size1.000-16
thread_class2B
overall_length0.523 INCHES MAXIMUM IN
outside_diameter1.126 INCHES MAXIMUM IN
special_featuresW/TWO ALUMINUM RETAINING RINGS
style_designatorNUT ASSEMBLY
thread_directionRIGHT-HAND
surface_treatmentANODIZE
end_item_identificationAIRCRAFT APPLICATION
screw_thread_series_designatorUN
tube_outside_diameter_for_which_designed0.500 INCHES NOMINAL IN
NSN4730-00-277-1383
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 12H72-8A · 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
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.500 INCHES NOMINAL IN
•
STYLE DESIGNATOR: NUT ASSEMBLY
•
OUTSIDE DIAMETER: 1.126 INCHES MAXIMUM IN
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD SIZE: 1.000-16
•
SCREW THREAD SERIES DESIGNATOR: UN
TECHNICAL CHARACTERISTICS
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.500 INCHES NOMINAL IN
STYLE DESIGNATORNUT ASSEMBLY
OVERALL LENGTH0.523 INCHES MAXIMUM IN
OUTSIDE DIAMETER1.126 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
THREAD SIZE1.000-16
SPECIAL FEATURESW/TWO ALUMINUM RETAINING RINGS
SCREW THREAD SERIES DESIGNATORUN
SURFACE TREATMENTANODIZE
THREAD CLASS2B
SUBSTITUTES & CROSS-REFERENCES 2
W702-8DSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
ST7M191Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Demilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is 12H72-8A?
12H72-8A is a NUT ASSEMBLY,TUBE COUPLING.
What parts can replace 12H72-8A?
There are 2 known substitutes for 12H72-8A: W702-8D, ST7M191. Substitute compatibility should be verified for your specific system.
What is the NSN for 12H72-8A?
12H72-8A is cataloged in the U.S. Government catalog under NSN 4730-00-277-1383. 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.