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AN840-6 ✓ 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 HOSE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, connection_type: THREADED EXTERNAL PIPE FIRST END, connection_style: BEADED (HOSE) SECOND END, surface_treatment: CADMIUM OVERALL, nominal_thread_size: 0.250 INCHES FIRST END IN, maximum_operating_temp: 225.0 FAHRENHEIT SINGLE RESPONSE DEGF. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-287-1876, 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
AN840-6
NSN: 4730-00-287-1876
FSC: 4730
CAGE: 14798 — DESIGNED METAL CONNECTIONS INC DBA PERMASWAGE USA DIV PERMASWAGE, A PCC COMPANY (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
connection_typeTHREADED EXTERNAL PIPE FIRST END
connection_styleBEADED (HOSE) SECOND END
surface_treatmentCADMIUM OVERALL
nominal_thread_size0.250 INCHES FIRST END IN
maximum_operating_temp225.0 FAHRENHEIT SINGLE RESPONSE DEGF
nominal_overall_length2.343 INCHES IN
media_for_which_designedHYDRAULIC FLUID SINGLE RESPONSE
thread_series_designatorANPT FIRST END
specification/standard_data88044-AN840 GOVERNMENT STANDARD AND 81343-AS4843/2 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
nominal_inside_diameter_hose_accommodated0.375 INCHES SECOND END IN
surface_treatment_document_and_classificationQQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN4730-00-287-1876
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AN840-6 · 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: 0.250 INCHES FIRST END IN
•
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 0.375 INCHES SECOND END IN
•
MEDIA FOR WHICH DESIGNED: HYDRAULIC FLUID SINGLE RESPONSE
•
SPECIFICATION/STANDARD DATA: 88044-AN840 GOVERNMENT STANDARD AND 81343-AS4843/2 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
SURFACE TREATMENT: CADMIUM OVERALL
•
THREAD SERIES DESIGNATOR: ANPT FIRST END
•
CONNECTION STYLE: BEADED (HOSE) SECOND END
•
NOMINAL OVERALL LENGTH: 2.343 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE0.250 INCHES FIRST END IN
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED0.375 INCHES SECOND END IN
MEDIA FOR WHICH DESIGNEDHYDRAULIC FLUID SINGLE RESPONSE
SPECIFICATION/STANDARD DATA88044-AN840 GOVERNMENT STANDARD AND 81343-AS4843/2 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
SURFACE TREATMENTCADMIUM OVERALL
THREAD SERIES DESIGNATORANPT FIRST END
CONNECTION STYLEBEADED (HOSE) SECOND END
NOMINAL OVERALL LENGTH2.343 INCHES IN
MATERIALCOPPER ALLOY OVERALL
CONNECTION TYPETHREADED EXTERNAL PIPE FIRST END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
6434NInterchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-20064Interchangeable
interchangeable cross-reference
interchangeable
MIL-V-20064Interchangeable
interchangeable cross-reference
interchangeable
AN840-11DInterchangeable
interchangeable cross-reference
interchangeable
12HLFDInterchangeable
interchangeable cross-reference
interchangeable
AS5183D1212Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AN840-6?
AN840-6 is a ADAPTER,STRAIGHT,PIPE TO HOSE.
What parts can replace AN840-6?
There are 20 known substitutes for AN840-6: 6434N, MIL-DTL-20064, MIL-V-20064 and 17 more. Substitute compatibility should be verified for your specific system.
Is AN840-6 still available?
AN840-6 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