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10177038 — INVERTED NUT,TUBE COUPLING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

10177038: INVERTED NUT,TUBE COUPLING.

The INVERTED NUT,TUBE COUPLING is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 360, thread_size: 1/4-28, thread_class: 2A A, overall_length: 0.500 INCHES NOMINAL IN, style_designator: INVERTED NUT, TUBE, DOUBLE COMPRESSION, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-908-3745, 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
10177038
NSN: 4730-00-908-3745
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: A486G — NIMIKKEISTOKESKUS NCB FINLAND (FIN)
SPECIFICATIONS
materialCOPPER ALLOY 360
thread_size1/4-28
thread_class2A A
overall_length0.500 INCHES NOMINAL IN
style_designatorINVERTED NUT, TUBE, DOUBLE COMPRESSION
thread_directionRIGHT-HAND
fabrication_methodBAR STOCK, MACHINED OR ROD STOCK, MACHINED
width_across_flats0.250 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
end_item_identificationSUPPORTS GRUMMAN A10 AIRCRAFT
smallest_inside_diameter0.128 INCHES NOMINAL IN
screw_thread_series_designatorUNF
NSN4730-00-908-3745
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 10177038 · 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
•
WIDTH ACROSS FLATS: 0.250 INCHES NOMINAL IN
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.125 INCHES NOMINAL IN
•
STYLE DESIGNATOR: INVERTED NUT, TUBE, DOUBLE COMPRESSION
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE CA360 ASSN STD SINGLE MATERIAL RESPONSE OR QQ-B-626, ALLOY 360, 1/2H FED SPEC SINGLE MATERIAL RESPONSE
•
THREAD DIRECTION: RIGHT-HAND
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
THREAD SIZE: 1/4-28
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.250 INCHES NOMINAL IN
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.125 INCHES NOMINAL IN
STYLE DESIGNATORINVERTED NUT, TUBE, DOUBLE COMPRESSION
MATERIAL DOCUMENT AND CLASSIFICATIONSAE CA360 ASSN STD SINGLE MATERIAL RESPONSE OR QQ-B-626, ALLOY 360, 1/2H FED SPEC SINGLE MATERIAL RESPONSE
OVERALL LENGTH0.500 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
CASEHARDENING INDICATORNOT CASEHARDENED
THREAD SIZE1/4-28
SCREW THREAD SERIES DESIGNATORUNF
THREAD CLASS2A 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 1
7791303Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
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 10177038?
10177038 is a INVERTED NUT,TUBE COUPLING.
What parts can replace 10177038?
There is 1 known substitute for 10177038: 7791303. Substitute compatibility should be verified for your specific system.
What is the NSN for 10177038?
10177038 is cataloged in the U.S. Government catalog under NSN 4730-00-908-3745. 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.