PartsTable
Technical Data Sheet
6331-1-4 ✓ 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 CIRCUIT CARD ASSEMBLY is a the manufacturer industrial component. Key specifications include material: COPPER OVERALL, seat_type: GROOVED, reducer_type: CONCENTRIC, connection_type: UNTHREADED INTERNAL TUBE ALL ENDS, connection_style: GROOVED INSIDE (TUBE) ALL ENDS, special_features: BOTH TUBING WALL THICKNESS AT EACH END CAN BE COMPROMISED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-266-3901, 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
6331-1-4
NSN: 4730-00-266-3901
FSC: 4730
CAGE: 12168 — NIBCO INC (USA)
SPECIFICATIONS
materialCOPPER OVERALL
seat_typeGROOVED
reducer_typeCONCENTRIC
connection_typeUNTHREADED INTERNAL TUBE ALL ENDS
connection_styleGROOVED INSIDE (TUBE) ALL ENDS
special_featuresBOTH TUBING WALL THICKNESS AT EACH END CAN BE COMPROMISED
style_designatorSCREWED
coupling_flange_shapeHEXAGON
nominal_overall_length3.312 INCHES IN
nominal_outside_diameter_tube_accommodated1.250 INCHES ALL ENDS IN
NSN4730-00-266-3901
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 6331-1-4 · 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
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 1.125 INCHES ALL ENDS IN
COUPLING FLANGE SHAPE: HEXAGON
NOMINAL OVERALL LENGTH: 2.000 INCHES IN
MATERIAL: COPPER ALLOY TAILPIECE
STYLE DESIGNATOR: SCREWED
SEAT TYPE: BEVELED
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED1.125 INCHES ALL ENDS IN
COUPLING FLANGE SHAPEHEXAGON
NOMINAL OVERALL LENGTH2.000 INCHES IN
MATERIALCOPPER ALLOY TAILPIECE
STYLE DESIGNATORSCREWED
SEAT TYPEBEVELED
MATERIALCOPPER ALLOY THREAD PIECE
MATERIALCOPPER ALLOY NUT
CONNECTION STYLESOCKET (TUBE) ALL ENDS
SPECIAL FEATURESBOTH TUBING WALL THICKNESS AT EACH END CAN BE COMPROMISED,LENGTH CAN BE COMPROMISED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
AA59617-37Interchangeable
interchangeable cross-reference
interchangeable
402Interchangeable
interchangeable cross-reference
interchangeable
196284Interchangeable
interchangeable cross-reference
interchangeable
775177-012Interchangeable
interchangeable cross-reference
interchangeable
WW-U-516-57Interchangeable
interchangeable cross-reference
interchangeable
A-A-59617Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 6331-1-4?
6331-1-4 is a CIRCUIT CARD ASSEMBLY.
What parts can replace 6331-1-4?
There are 26 known substitutes for 6331-1-4: AA59617-37, 402, 196284 and 23 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 6331-1-4?
6331-1-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-266-3901. This indicates validated use in U.S. government and defense supply chains.
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