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ST7M191-104D — NUT ASSEMBLY,TUBE COUPLING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

ST7M191-104D: NUT ASSEMBLY,TUBE COUPLING.

The NUT ASSEMBLY,TUBE COUPLING is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY, thread_size: 7-3/8-16, thread_class: 2B, overall_length: 0.870 INCHES MAXIMUM IN, outside_diameter: 7.656 INCHES MAXIMUM IN, special_features: W/TWO STEEL WASHERS. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-083-2889, 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
ST7M191-104D
NSN: 4730-01-083-2889
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialALUMINUM ALLOY
thread_size7-3/8-16
thread_class2B
overall_length0.870 INCHES MAXIMUM IN
outside_diameter7.656 INCHES MAXIMUM IN
special_featuresW/TWO STEEL WASHERS
style_designatorNUT ASSEMBLY
thread_directionRIGHT-HAND
surface_treatmentANODIZE
end_item_identificationAIRCRAFT APPLICATION
working_temp_and_service_type160.0 DEG FAHRENHEIT NOMINAL AIR
screw_thread_series_designatorUNS
NSN4730-01-083-2889
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: ST7M191-104D · 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
•
WORKING TEMP AND SERVICE TYPE: 160.0 DEG FAHRENHEIT NOMINAL AIR
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 6.500 INCHES NOMINAL IN
•
STYLE DESIGNATOR: NUT ASSEMBLY
•
OUTSIDE DIAMETER: 7.656 INCHES MAXIMUM IN
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD SIZE: 7-3/8-16
TECHNICAL CHARACTERISTICS
WORKING TEMP AND SERVICE TYPE160.0 DEG FAHRENHEIT NOMINAL AIR
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED6.500 INCHES NOMINAL IN
STYLE DESIGNATORNUT ASSEMBLY
OVERALL LENGTH0.870 INCHES MAXIMUM IN
OUTSIDE DIAMETER7.656 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
THREAD SIZE7-3/8-16
SPECIAL FEATURESW/TWO STEEL WASHERS
SCREW THREAD SERIES DESIGNATORUNS
SURFACE TREATMENTANODIZE
SUBSTITUTES & CROSS-REFERENCES 2
ST7M191Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
W702-104DSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is ST7M191-104D?
ST7M191-104D is a NUT ASSEMBLY,TUBE COUPLING.
What parts can replace ST7M191-104D?
There are 2 known substitutes for ST7M191-104D: ST7M191, W702-104D. Substitute compatibility should be verified for your specific system.
What is the NSN for ST7M191-104D?
ST7M191-104D is cataloged in the U.S. Government catalog under NSN 4730-01-083-2889. 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.