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3B6552 ✓ 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 ELBOW,PIPE is a the manufacturer industrial component. Key specifications include material: WOOL AND RUBBER OVERALL, outside_diameter: 1.888 INCHES NOMINAL IN, style_designator: CIRCULAR, aperture_diameter: 0.850 INCHES MINIMUM AND 0.855 INCHES MAXIMUM IN, cross-sectional_thickness: 0.438 INCHES NOMINAL IN, cross-sectional_shape_style: SOLID SINGLE OR COMPOSITION. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-231-5605, 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
3B6552
NSN: 4730-00-231-5605
FSC: 4730
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialWOOL AND RUBBER OVERALL
outside_diameter1.888 INCHES NOMINAL IN
style_designatorCIRCULAR
aperture_diameter0.850 INCHES MINIMUM AND 0.855 INCHES MAXIMUM IN
cross-sectional_thickness0.438 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
NSN4730-00-231-5605
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 3B6552 · 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 26
LM11910Interchangeable
interchangeable cross-reference
interchangeable
6551Interchangeable
interchangeable cross-reference
interchangeable
M302-00Interchangeable
interchangeable cross-reference
interchangeable
M302Interchangeable
interchangeable cross-reference
interchangeable
10-542-2Interchangeable
interchangeable cross-reference
interchangeable
1042-2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3B6552?
3B6552 is a ELBOW,PIPE.
What parts can replace 3B6552?
There are 26 known substitutes for 3B6552: LM11910, 6551, M302-00 and 23 more. Substitute compatibility should be verified for your specific system.
Is 3B6552 still available?
3B6552 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