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Technical Data Sheet
PartsTable / COMPONENT / 3-4CDD
3-4CDD ✓ 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 material: ALUMINUM ALLOY OVERALL, flow_angle: 90.0 DEGREES, leg_length: 1.344 INCHES MINIMUM AND 1.391 INCHES MAXIMUM FIRST END IN, connection_type: THREADED EXTERNAL PIPE SECOND END, connection_style: PLAIN (PIPE) FIRST END, surface_treatment: ANODIZE OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-187-1388, 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
3-4CDD
NSN: 4730-00-187-1388
FSC: 4730
CAGE: 45681 — PARKER-HANNIFIN CORPORATION DBA PNEUTRONICS DIV CORPORATE HEADQUARTERS (USA)
SPECIFICATIONS
materialALUMINUM ALLOY OVERALL
flow_angle90.0 DEGREES
leg_length1.344 INCHES MINIMUM AND 1.391 INCHES MAXIMUM FIRST END IN
connection_typeTHREADED EXTERNAL PIPE SECOND END
connection_stylePLAIN (PIPE) FIRST END
surface_treatmentANODIZE OVERALL
nominal_thread_size0.750 INCHES ALL ENDS IN
end_item_identificationAIRCRAFT APPLICATION
thread_series_designatorANPT ALL ENDS
specification/standard_data88044-AN914 GOVERNMENT STANDARD AND 81343-AS4842 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
surface_treatment_document_and_classificationMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN4730-00-187-1388
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 3-4CDD · 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 THREAD SIZE: 0.750 INCHES ALL ENDS IN
•
SURFACE TREATMENT: ANODIZE OVERALL
•
SPECIFICATION/STANDARD DATA: 88044-AN914 GOVERNMENT STANDARD AND 81343-AS4842 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
FLOW ANGLE: 90.0 DEGREES
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
CONNECTION STYLE: PLAIN (PIPE) SECOND END
•
MATERIAL: ALUMINUM ALLOY OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE0.750 INCHES ALL ENDS IN
SURFACE TREATMENTANODIZE OVERALL
END ITEM IDENTIFICATIONAIRCRAFT APPLICATION
SPECIFICATION/STANDARD DATA88044-AN914 GOVERNMENT STANDARD AND 81343-AS4842 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
FLOW ANGLE90.0 DEGREES
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
CONNECTION STYLEPLAIN (PIPE) SECOND END
MATERIALALUMINUM ALLOY OVERALL
SPECIFICATION/STANDARD DATA88044-AN914 GOVERNMENT STANDARD AND 81343-AS4842 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
THREAD SERIES DESIGNATORANPT ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
1102Interchangeable
interchangeable cross-reference
interchangeable
72-6970-936Interchangeable
interchangeable cross-reference
interchangeable
138-54Interchangeable
interchangeable cross-reference
interchangeable
40-26Interchangeable
interchangeable cross-reference
interchangeable
ASHJRNX-834-A27Interchangeable
interchangeable cross-reference
interchangeable
3855Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3-4CDD?
3-4CDD is a ADAPTER,STRAIGHT,PIPE TO BOSS.
What parts can replace 3-4CDD?
There are 20 known substitutes for 3-4CDD: 1102, 72-6970-936, 138-54 and 17 more. Substitute compatibility should be verified for your specific system.
Is 3-4CDD still available?
3-4CDD 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