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841337PC8 — INVERTED NUT,TUBE COUPLING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

841337PC8: INVERTED NUT,TUBE COUPLING.

The INVERTED NUT,TUBE COUPLING is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OR NICKEL ALLOY 400, thread_size: 2-12, thread_class: 3A A, overall_length: 1.312 INCHES NOMINAL IN, style_designator: INVERTED NUT, TUBE, FLARE, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-277-3359, 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
841337PC8
NSN: 4730-00-277-3359
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialNICKEL ALLOY OR NICKEL ALLOY 400
thread_size2-12
thread_class3A A
overall_length1.312 INCHES NOMINAL IN
style_designatorINVERTED NUT, TUBE, FLARE
thread_directionRIGHT-HAND
seat_angle_in_deg10.0
fabrication_methodBAR STOCK, MACHINED
width_across_flats0.766 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
smallest_inside_diameter0.453 INCHES NOMINAL IN
screw_thread_series_designatorUNS
NSN4730-00-277-3359
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 841337PC8 · 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: 0.766 INCHES NOMINAL IN
•
SEAT ANGLE IN DEG: 10.0
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.405 INCHES NOMINAL IN
•
STYLE DESIGNATOR: INVERTED NUT, TUBE, FLARE
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-N-20164 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-N-894, CLASS A-CANCELED MIL SPEC 2ND MATERIAL RESPONSE
•
THREAD DIRECTION: RIGHT-HAND
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.766 INCHES NOMINAL IN
SEAT ANGLE IN DEG10.0
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.405 INCHES NOMINAL IN
STYLE DESIGNATORINVERTED NUT, TUBE, FLARE
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-N-20164 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-N-894, CLASS A-CANCELED MIL SPEC 2ND MATERIAL RESPONSE
OVERALL LENGTH1.312 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
CASEHARDENING INDICATORNOT CASEHARDENED
THREAD SIZE2-12
SCREW THREAD SERIES DESIGNATORUNS
SUBSTITUTES & CROSS-REFERENCES 2
841337Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
5000S4823F841337Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 841337PC8?
841337PC8 is a INVERTED NUT,TUBE COUPLING.
What parts can replace 841337PC8?
There are 2 known substitutes for 841337PC8: 841337, 5000S4823F841337. Substitute compatibility should be verified for your specific system.
What is the NSN for 841337PC8?
841337PC8 is cataloged in the U.S. Government catalog under NSN 4730-00-277-3359. 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.