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AN840-11 ✓ 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 360 OR COPPER ALLOY 377 OVERALL, connection_type: THREADED EXTERNAL PIPE FIRST END, connection_style: PLAIN (PIPE) FIRST END, special_features: CENTER WRENCHING FACILITY, surface_treatment: CADMIUM OVERALL, operating_pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-277-6384, 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
AN840-11
NSN: 4730-00-277-6384
FSC: 4730
CAGE: 34724 — ACRA AEROSPACE, LLC (USA)
SPECIFICATIONS
materialCOPPER ALLOY 360 OR COPPER ALLOY 377 OVERALL
connection_typeTHREADED EXTERNAL PIPE FIRST END
connection_stylePLAIN (PIPE) FIRST END
special_featuresCENTER WRENCHING FACILITY
surface_treatmentCADMIUM OVERALL
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.375 INCHES FIRST END IN
maximum_operating_temp-65.0 FAHRENHEIT SECOND RESPONSE DEGF
nominal_overall_length2.406 INCHES IN
media_for_which_designedOXYGEN, GASEOUS FIRST RESPONSE
thread_series_designatorANPT FIRST END
specification/standard_data88044-AN840 GOVERNMENT STANDARD AND 81343-AS4843/2 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
NSN4730-00-277-6384
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AN840-11 · 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
•
OPERATING PRESSURE: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 0.750 INCHES SECOND END IN
•
SURFACE TREATMENT: CADMIUM OVERALL
•
THREAD SERIES DESIGNATOR: ANPT FIRST END
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-B-626,COMP 22,HALF HARD FED SPEC 1ST MATERIAL RESPONSE OR QQ-B-626,COMP 21 FED SPEC 2ND MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD SIZE: 0.375 INCHES FIRST END IN
•
NOMINAL OVERALL LENGTH: 2.406 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED0.750 INCHES SECOND END IN
SURFACE TREATMENTCADMIUM OVERALL
SPECIAL FEATURESCENTER WRENCHING FACILITY
THREAD SERIES DESIGNATORANPT FIRST END
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-626,COMP 22,HALF HARD FED SPEC 1ST MATERIAL RESPONSE OR QQ-B-626,COMP 21 FED SPEC 2ND MATERIAL RESPONSE OVERALL
NOMINAL THREAD SIZE0.375 INCHES FIRST END IN
NOMINAL OVERALL LENGTH2.406 INCHES IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MEDIA FOR WHICH DESIGNEDAIR THIRD RESPONSE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
GGG-S-131Interchangeable
Scriber,machinist's
interchangeable
31098Interchangeable
Scriber,machinist's
interchangeable
5120002249728Interchangeable
Scriber,machinist's
interchangeable
60-0001Interchangeable
interchangeable cross-reference
interchangeable
96-0279Interchangeable
interchangeable cross-reference
interchangeable
90CInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AN840-11?
AN840-11 is a ADAPTER,STRAIGHT,PIPE TO HOSE.
What parts can replace AN840-11?
There are 9 known substitutes for AN840-11: GGG-S-131, 31098, 5120002249728 and 6 more. Substitute compatibility should be verified for your specific system.
Is AN840-11 still available?
AN840-11 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