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PartsTable / COMPONENT / 6405-06-04-O
6405-06-04-O ✓ 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 ADAPTER,STRAIGHT,PIPE TO BOSS is a the manufacturer industrial component. Key specifications include shape: ROUND, material: STEEL OVERALL, case_style: SQUARE, seal_width: 0.281 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN, corner_shape: SQUARE ALL CORNERS, thread_class: 2A A. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-161-0072, 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
6405-06-04-O
NSN: 4730-01-161-0072
FSC: 4730
CAGE: 5E240 — BRENNAN INDUSTRIES (USA)
SPECIFICATIONS
shapeROUND
materialSTEEL OVERALL
case_styleSQUARE
seal_width0.281 INCHES MINIMUM AND 0.344 INCHES MAXIMUM IN
corner_shapeSQUARE ALL CORNERS
thread_class2A A
bore_diameter1.750 INCHES NOMINAL IN
thread_length0.750 INCHES NOMINAL IN
container_typeCASE
overall_length1.013 INCHES NOMINAL IN
reservoir_typeINTEGRAL
drive_end_shapeSQUARE SINGLE END INTERNAL
NSN4730-01-161-0072
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 6405-06-04-O · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
1-958082-001Interchangeable
interchangeable cross-reference
interchangeable
8210-1135Interchangeable
interchangeable cross-reference
interchangeable
RELEASE5285Interchangeable
interchangeable cross-reference
interchangeable
907821Interchangeable
interchangeable cross-reference
interchangeable
S000069Interchangeable
interchangeable cross-reference
interchangeable
91248A626Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 6405-06-04-O?
6405-06-04-O is a ADAPTER,STRAIGHT,PIPE TO BOSS.
What parts can replace 6405-06-04-O?
There are 23 known substitutes for 6405-06-04-O: 1-958082-001, 8210-1135, RELEASE5285 and 20 more. Substitute compatibility should be verified for your specific system.
Is 6405-06-04-O still available?
6405-06-04-O 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