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IX359 ✓ 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 CUP,GREASE is a the manufacturer industrial component. Key specifications include height: 2.062 INCHES NOMINAL IN, material: COPPER ALLOY OVERALL, grease_capacity: 0.500 OUNCES OZ, special_features: CAP HAS WING ON TOP FOR TURNING, style_designator: STRAIGHT, CAP FEED, W/BALL CHECK, nominal_thread_size: 0.125 INCHES IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-223-6398, 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
IX359
NSN: 4730-00-223-6398
FSC: 4730
CAGE: 54641 — LEAR SIEGLER INC SHERWOOD DIV (USA)
SPECIFICATIONS
height2.062 INCHES NOMINAL IN
materialCOPPER ALLOY OVERALL
grease_capacity0.500 OUNCES OZ
special_featuresCAP HAS WING ON TOP FOR TURNING
style_designatorSTRAIGHT, CAP FEED, W/BALL CHECK
nominal_thread_size0.125 INCHES IN
thread_quantity_per_inch27
assembly_clearance_radius0.547 INCHES NOMINAL IN
screw_thread_series_designatorNPT
NSN4730-00-223-6398
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: IX359 · 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
•
GREASE CAPACITY: 0.500 OUNCES OZ
•
SCREW THREAD SERIES DESIGNATOR: NPT
•
ASSEMBLY CLEARANCE RADIUS: 0.547 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 0.125 INCHES IN
•
HEIGHT: 2.062 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 27
•
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
GREASE CAPACITY0.500 OUNCES OZ
SCREW THREAD SERIES DESIGNATORNPT
ASSEMBLY CLEARANCE RADIUS0.547 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.125 INCHES IN
HEIGHT2.062 INCHES NOMINAL IN
THREAD QUANTITY PER INCH27
SPECIAL FEATURESCAP HAS WING ON TOP FOR TURNING
MATERIALCOPPER ALLOY OVERALL
STYLE DESIGNATORSTRAIGHT, CAP FEED, W/BALL CHECK
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
FFS92TYPEISTYLE4SInterchangeable
interchangeable cross-reference
interchangeable
B1859Interchangeable
interchangeable cross-reference
interchangeable
STYLE207SIZE00Interchangeable
Same NIIN cross-reference
interchangeable
208B00Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is IX359?
IX359 is a CUP,GREASE.
What parts can replace IX359?
There are 4 known substitutes for IX359: FFS92TYPEISTYLE4S, B1859, STYLE207SIZE00 and 1 more. Substitute compatibility should be verified for your specific system.
Is IX359 still available?
IX359 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