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Technical Data Sheet
PartsTable / COMPONENT / 2-050110
2-050110 ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The INVERTED NUT,TUBE COUPLING is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, nut_style: HEXAGON, nut_height: 0.125 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNF, thread_direction: RIGHT-HAND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-278-5490, 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
2-050110
NSN: 4730-00-278-5490
FSC: 4730
CAGE: 13174 — PARKER HANNIFIN CORP HOSE PRODUCTS DIV (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
nut_styleHEXAGON
nut_height0.125 INCHES NOMINAL IN
thread_class2B
thread_seriesUNF
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
width_across_flats0.375 INCHES NOMINAL IN
nominal_thread_size0.190 INCHES IN
bearing_surface_typeCHAMFERED OR WASHER FACED
thread_quantity_per_inch32
NSN4730-00-278-5490
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 2-050110 · 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
•
STYLE DESIGNATOR: INVERTED NUT, TUBE, COMPRESSION
•
CRITICALITY CODE JUSTIFICATION: FEAT
•
THREAD SIZE: 5/16-24
•
SMALLEST INSIDE DIAMETER: 0.128 INCHES NOMINAL IN
•
WIDTH ACROSS FLATS: 0.313 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
SEAT RADIUS: 0.219 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORINVERTED NUT, TUBE, COMPRESSION
CRITICALITY CODE JUSTIFICATIONFEAT
THREAD SIZE5/16-24
OVERALL LENGTH0.500 INCHES NOMINAL IN
SMALLEST INSIDE DIAMETER0.128 INCHES NOMINAL IN
WIDTH ACROSS FLATS0.313 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
SEAT RADIUS0.219 INCHES NOMINAL IN
SPECIAL FEATURESWEAPON SYSTEM ESSENTIAL
END ITEM IDENTIFICATIONSUPPORT EQUIPMENT--C-5 AIRCRAFT, T-38 AIRCRAFT, B-52 AIRCRAFT, T-37 AIRCRAFT, OV-10A AIRCRAFT; AIRCRAFT, F-16; SHOP EQUIPMENT, CONTACT MAINT, TRK-MTD, SET 3, TAM B19457; TRACTOR, FLIGHTLINE TOWING A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
WInterchangeable
interchangeable cross-reference
interchangeable
1061-0002Interchangeable
interchangeable cross-reference
interchangeable
121634Interchangeable
interchangeable cross-reference
interchangeable
20501-10Interchangeable
interchangeable cross-reference
interchangeable
358BXInterchangeable
interchangeable cross-reference
interchangeable
8-3-4INX5-32INInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2-050110?
2-050110 is a INVERTED NUT,TUBE COUPLING.
What parts can replace 2-050110?
There are 12 known substitutes for 2-050110: W, 1061-0002, 121634 and 9 more. Substitute compatibility should be verified for your specific system.
Is 2-050110 still available?
2-050110 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026