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803-7657203ITEM148 — NUT,UNION

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

803-7657203ITEM148: NUT,UNION.

The NUT,UNION is a the manufacturer industrial component. Key specifications include nut_height: 1.160 INCHES NOMINAL IN, thread_series: UNS, thread_direction: RIGHT-HAND, width_across_flats: 4.063 INCHES NOMINAL IN, nominal_thread_size: 0.190 INCHES IN, thread_quantity_per_inch: 28. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-599-3260, 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
803-7657203ITEM148
NSN: 4730-01-599-3260
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
nut_height1.160 INCHES NOMINAL IN
thread_seriesUNS
thread_directionRIGHT-HAND
width_across_flats4.063 INCHES NOMINAL IN
nominal_thread_size0.190 INCHES IN
thread_quantity_per_inch28
part_name_assigned_by_controlling_agencyUNION - LOW PRESSURE ASSEMBLY AND DETAILS (NUT,UNION)
NSN4730-01-599-3260
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 803-7657203ITEM148 · 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: 4.063 INCHES NOMINAL IN
•
THREAD SERIES: UNS
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.190 INCHES IN
•
NUT HEIGHT: 1.160 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 28
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS4.063 INCHES NOMINAL IN
THREAD SERIESUNS
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.190 INCHES IN
NUT HEIGHT1.160 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYUNION - LOW PRESSURE ASSEMBLY AND DETAILS (NUT,UNION)
THREAD QUANTITY PER INCH28
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

No substitute or cross-reference records for this part.

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 803-7657203ITEM148?
803-7657203ITEM148 is a NUT,UNION.
What is the NSN for 803-7657203ITEM148?
803-7657203ITEM148 is cataloged in the U.S. Government catalog under NSN 4730-01-599-3260. 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.