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Technical Data Sheet
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31783-6 — NUT,TUBE COUPLING

✓ Government record, cited
Peach · HOSE FITTING
PRODUCT OVERVIEW

31783-6: NUT,TUBE COUPLING.

Peach is one of Switzerland's leading suppliers of compatible replacement ink cartridges. Leading-edge technology ensures optimal quality for outstanding results. Colour durability and fade-resistance satisfy the most stringent requirements to guarantee brilliant printouts.

To ensure Premium Quality, we manufacture our inks at our own development centre in Switzerland, after which they are injected into the cartridges at our European production site. The latest advances in research and technology flow into our manufacturing and production methods. A quality level that the Asian manufacturers fail to equal, available at very attractive prices.

A genuine alternative to expensive OEM products and low-budget inks. This part is cataloged in the U.S. Government catalog under NSN 4730-01-040-5774, indicating validated use in U.S.

government and defense logistics supply chains.

WHERE IT FITS
31783-6
NSN: 4730-01-040-5774
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 14397 — FABER ENTERPRISES, INC. DIV FABER ENTERPRISE INC (USA)
SPECIFICATIONS
materialTITANIUM ALLOY OVERALL
nut_styleTUBE COUPLING
nut_height0.800 INCHES NOMINAL IN
seat_angle0.45 DEGREES NOMINAL
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
special_featuresFLUORIDE CONVERSION COATING PER BAC5861 OR ANODIZW,COLOR DULL GRAY
thread_directionRIGHT-HAND
length_to_shoulder0.578 INCHES NOMINAL IN
width_across_flats0.688 INCHES NOMINAL IN
nominal_thread_size0.562 INCHES IN
end_item_identificationAIRCRAFT APPLICATION
NSN4730-01-040-5774
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 31783-6 · Peach ⚠ 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
•
LENGTH TO SHOULDER: 0.578 INCHES NOMINAL IN
•
WIDTH ACROSS FLATS: 0.688 INCHES NOMINAL IN
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
SEAT ANGLE: 0.45 DEGREES NOMINAL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.562 INCHES IN
•
NUT HEIGHT: 0.800 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
LENGTH TO SHOULDER0.578 INCHES NOMINAL IN
WIDTH ACROSS FLATS0.688 INCHES NOMINAL IN
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
SEAT ANGLE0.45 DEGREES NOMINAL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.562 INCHES IN
NUT HEIGHT0.800 INCHES NOMINAL IN
SPECIAL FEATURESFLUORIDE CONVERSION COATING PER BAC5861 OR ANODIZW,COLOR DULL GRAY
NUT STYLETUBE COUPLING
THREAD CLASS3B
SUBSTITUTES & CROSS-REFERENCES 8
DB0N10NR6Reference document
Same NSN cross-reference
Reference document — Secondary reference
BACN10NRReference document
Same NSN cross-reference
Reference document — Drawing number reference only
2-03005T-6Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
AFP107-6Reference document
Same NSN cross-reference
Reference document — Secondary reference
DBON10R6Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
AP1028T-6Same 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 31783-6?
31783-6 is a NUT,TUBE COUPLING manufactured by Peach.
What parts can replace 31783-6?
There are 8 known substitutes for 31783-6: DB0N10NR6, BACN10NR, 2-03005T-6 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 31783-6?
31783-6 is cataloged in the U.S. Government catalog under NSN 4730-01-040-5774. This indicates validated use in U.S. government and defense supply chains.
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