PartsTable
Technical Data Sheet
320AS303-6 ✓ 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

PISTON,INTERNAL COMBUSTION ENGIN. Key specifications include material: COPPER ALLOY 377 OVERALL, flow_angle: 90.0 DEGREES, leg_length: 0.875 INCHES MINIMUM AND 0.968 INCHES MAXIMUM SECOND END IN, connection_type: THREADED EXTERNAL HOSE GRIPPING SECOND END, connection_style: PLAIN (PIPE) FIRST END, nominal_thread_size: 0.250 INCHES FIRST END IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-622-9393, 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
320AS303-6
NSN: 4730-00-622-9393
FSC: 4730
CAGE: 30003 — NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialCOPPER ALLOY 377 OVERALL
flow_angle90.0 DEGREES
leg_length0.875 INCHES MINIMUM AND 0.968 INCHES MAXIMUM SECOND END IN
connection_typeTHREADED EXTERNAL HOSE GRIPPING SECOND END
connection_stylePLAIN (PIPE) FIRST END
nominal_thread_size0.250 INCHES FIRST END IN
thread_series_designatorNPTF FIRST END
furnished_items_and_quantity1 HOSE COUPLING NUT AND 1 LONG COUPLING NUT
nominal_inside_diameter_hose_accommodated0.250 INCHES SECOND END IN
nominal_outside_diameter_hose_accommodated0.375 INCHES SECOND END IN
NSN4730-00-622-9393
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 320AS303-6 · 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
LEG LENGTH: 0.938 INCHES MINIMUM AND 1.000 INCHES MAXIMUM FIRST END IN
CONNECTION STYLE: GRIPPING (HOSE) SECOND END
FLOW ANGLE: 90.0 DEGREES
MATERIAL: COPPER ALLOY 377 OVERALL
CONNECTION TYPE: THREADED EXTERNAL HOSE GRIPPING SECOND END
NOMINAL OUTSIDE DIAMETER HOSE ACCOMMODATED: 0.375 INCHES SECOND END IN
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 0.250 INCHES SECOND END IN
TECHNICAL CHARACTERISTICS (FLIS)
LEG LENGTH0.938 INCHES MINIMUM AND 1.000 INCHES MAXIMUM FIRST END IN
CONNECTION STYLEGRIPPING (HOSE) SECOND END
FLOW ANGLE90.0 DEGREES
MATERIALCOPPER ALLOY 377 OVERALL
CONNECTION STYLEPLAIN (PIPE) FIRST END
CONNECTION TYPETHREADED EXTERNAL HOSE GRIPPING SECOND END
NOMINAL OUTSIDE DIAMETER HOSE ACCOMMODATED0.375 INCHES SECOND END IN
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED0.250 INCHES SECOND END IN
NOMINAL THREAD SIZE0.250 INCHES FIRST END IN
THREAD SERIES DESIGNATORNPTF FIRST END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 30
ST57D65-11Interchangeable
interchangeable cross-reference
interchangeable
269P-1-4X1-4Interchangeable
interchangeable cross-reference
interchangeable
3522500 20289Interchangeable
interchangeable cross-reference
interchangeable
269-PInterchangeable
interchangeable cross-reference
interchangeable
8894286Interchangeable
interchangeable cross-reference
interchangeable
845PInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 320AS303-6?
320AS303-6 is a PISTON,INTERNAL COMBUSTION ENGIN.
What parts can replace 320AS303-6?
There are 30 known substitutes for 320AS303-6: ST57D65-11, 269P-1-4X1-4, 3522500 20289 and 27 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 320AS303-6?
320AS303-6 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-622-9393. This indicates validated use in U.S. government and defense supply chains.
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