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PartsTable / COMPONENT / 3321R 3-8IN
3321R 3-8IN ✓ 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 TEE,PIPE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, leg_length: 1.000 INCHES NOMINAL ALL ENDS IN, connection_style: SOCKET (PIPE) ALL ENDS, operating_pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS, end_item_identification: LANDING CRAFT, media_for_which_designed: WATER-OIL-GAS THIRD RESPONSE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-004-2251, 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
3321R 3-8IN
NSN: 4730-00-004-2251
FSC: 4730
CAGE: 03958 — MINDECO CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
leg_length1.000 INCHES NOMINAL ALL ENDS IN
connection_styleSOCKET (PIPE) ALL ENDS
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
end_item_identificationLANDING CRAFT
media_for_which_designedWATER-OIL-GAS THIRD RESPONSE
nominal_pipe_size_accommodated0.375 INCHES ALL ENDS IN
material_document_and_classificationASTM A105,GR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
pipe_wall_thickness_designation_for_which_designedSCHEDULE 80 ALL ENDS
NSN4730-00-004-2251
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 3321R 3-8IN · 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
•
MATERIAL: STEEL OVERALL
•
PIPE WALL THICKNESS DESIGNATION FOR WHICH DESIGNED: SCHEDULE 80 ALL ENDS
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A105,GR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
MEDIA FOR WHICH DESIGNED: AIR FIRST RESPONSE
•
OPERATING PRESSURE: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
NOMINAL PIPE SIZE ACCOMMODATED: 0.375 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL OVERALL
PIPE WALL THICKNESS DESIGNATION FOR WHICH DESIGNEDSCHEDULE 80 ALL ENDS
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A105,GR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MEDIA FOR WHICH DESIGNEDAIR FIRST RESPONSE
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
END ITEM IDENTIFICATIONLANDING CRAFT
NOMINAL PIPE SIZE ACCOMMODATED0.375 INCHES ALL ENDS IN
MEDIA FOR WHICH DESIGNEDSTEAM SECOND RESPONSE
LEG LENGTH1.000 INCHES NOMINAL ALL ENDS IN
MEDIA FOR WHICH DESIGNEDWATER-OIL-GAS THIRD RESPONSE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
1381 3-8INInterchangeable
Same NIIN cross-reference
interchangeable
ANSI B16.11Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3321R 3-8IN?
3321R 3-8IN is a TEE,PIPE.
What parts can replace 3321R 3-8IN?
There are 2 known substitutes for 3321R 3-8IN: 1381 3-8IN, ANSI B16.11. Substitute compatibility should be verified for your specific system.
What is the NSN for 3321R 3-8IN?
3321R 3-8IN is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-004-2251. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: July 2026