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Technical Data Sheet
PartsTable / COMPONENT / 4730008730842
4730008730842 ✓ 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: STEEL, thread_size: 1/2-20, thread_class: 2A A, overall_length: 0.600 INCHES NOMINAL IN, style_designator: INVERTED NUT, TUBE, FLARE, thread_direction: RIGHT-HAND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-873-0842, 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
4730008730842
NSN: 4730-00-873-0842
FSC: 4730
CAGE: A00AM — E.C.A ETABLISSEMENT CENTRAL DES APPROVISIONNEMENTS DES FORCES ARMEES ROYALES
SPECIFICATIONS
materialSTEEL
thread_size1/2-20
thread_class2A A
overall_length0.600 INCHES NOMINAL IN
style_designatorINVERTED NUT, TUBE, FLARE
thread_directionRIGHT-HAND
seat_angle_in_deg45.0
surface_treatmentCADMIUM
width_across_flats0.500 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
end_item_identificationCLARK MODEL 290M;TRACTOR,WHEELED,IND.,DIESEL DRIVEN;MED DBP,NSN 2420000889384,W/ROPS NSN 2420010590090 W
smallest_inside_diameter0.317 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN
NSN4730-00-873-0842
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4730008730842 · 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
•
THREAD CLASS: 2A A
•
STYLE DESIGNATOR: INVERTED NUT, TUBE, FLARE
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.312 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM
•
MATERIAL: STEEL
•
THREAD SIZE: 1/2-20
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS2A A
STYLE DESIGNATORINVERTED NUT, TUBE, FLARE
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.312 INCHES NOMINAL IN
OVERALL LENGTH0.600 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM
MATERIALSTEEL
THREAD SIZE1/2-20
END ITEM IDENTIFICATIONCLARK MODEL 290M;TRACTOR,WHEELED,IND.,DIESEL DRIVEN;MED DBP,NSN 2420000889384,W/ROPS NSN 2420010590090 W
SEAT ANGLE IN DEG45.0
SCREW THREAD SERIES DESIGNATORUNF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
1023AInterchangeable
interchangeable cross-reference
interchangeable
123AInterchangeable
interchangeable cross-reference
interchangeable
23AInterchangeable
interchangeable cross-reference
interchangeable
023AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4730008730842?
4730008730842 is a INVERTED NUT,TUBE COUPLING.
What parts can replace 4730008730842?
There are 4 known substitutes for 4730008730842: 1023A, 123A, 23A and 1 more. Substitute compatibility should be verified for your specific system.
Is 4730008730842 still available?
4730008730842 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