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0344821 — Technical Data Sheet

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— · 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 NIPPLE,SPECIAL is a the manufacturer industrial component. Key specifications include material: ALUMINUM OR STEEL CORROSION RESISTING, end_item_identification: NAVY CODES 66A090003, 66A090004, 66A090005, part_name_assigned_by_controlling_agency: NIPPLE,C/C OIL INLET. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 4730-01-577-1438, 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
0344821
NSN: 4730-01-577-1438
FSC: 4730
CAGE: 1UVT5 — BRP US INC (USA)
SPECIFICATIONS
materialALUMINUM OR STEEL CORROSION RESISTING
end_item_identificationNAVY CODES 66A090003, 66A090004, 66A090005
part_name_assigned_by_controlling_agencyNIPPLE,C/C OIL INLET
NSN4730-01-577-1438
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 0344821 · 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: ALUMINUM OR STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS
PART NAME ASSIGNED BY CONTROLLING AGENCYNIPPLE,C/C OIL INLET
END ITEM IDENTIFICATIONNAVY CODES 66A090003, 66A090004, 66A090005
MATERIALALUMINUM OR STEEL CORROSION RESISTING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
3448-21InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
003375-001InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
3375-1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
ZB0344821InterchangeableGOVERNMENT REGISTRY
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 0344821?
0344821 is a NIPPLE,SPECIAL.
What parts can replace 0344821?
There are 4 known substitutes for 0344821: 3448-21, 003375-001, 3375-1 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 0344821?
0344821 is cataloged in the Federal Logistics Information System under NSN 4730-01-577-1438. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: October 2026