PartsTable
Technical Data Sheet
AN826-4S ✓ 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: STEEL COMP 347 OVERALL, leg_length: 0.859 INCHES MINIMUM AND 0.906 INCHES MAXIMUM THIRD END IN, seat_angle: 37.0 DEGREES FIRST END, thread_class: 3A THIRD END A, connection_type: THREADED EXTERNAL TUBE THIRD END, connection_style: FLARED (TUBE) FIRST END. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-277-5039, 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
AN826-4S
NSN: 4730-00-277-5039
FSC: 4730
CAGE: 88044 — AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE (USA)
SPECIFICATIONS
materialSTEEL COMP 347 OVERALL
leg_length0.859 INCHES MINIMUM AND 0.906 INCHES MAXIMUM THIRD END IN
seat_angle37.0 DEGREES FIRST END
thread_class3A THIRD END A
connection_typeTHREADED EXTERNAL TUBE THIRD END
connection_styleFLARED (TUBE) FIRST END
surface_treatmentPASSIVATE OVERALL
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.438 INCHES FIRST END IN
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF) FIRST END
specification/standard_data96906-MS20826 GOVERNMENT STANDARD
material_document_and_classificationQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN4730-00-277-5039
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AN826-4S · 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
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES FIRST END IN
NOMINAL THREAD SIZE: 0.125 INCHES SECOND END IN
CONNECTION STYLE: PLAIN (PIPE) SECOND END
THREAD SERIES DESIGNATOR: ANPT SECOND END
LEG LENGTH: 0.759 INCHES MINIMUM AND 0.797 INCHES MAXIMUM SECOND END IN
CONNECTION TYPE: THREADED EXTERNAL TUBE THIRD END
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES FIRST END IN
NOMINAL THREAD SIZE0.125 INCHES SECOND END IN
CONNECTION STYLEPLAIN (PIPE) SECOND END
THREAD SERIES DESIGNATORANPT SECOND END
LEG LENGTH0.759 INCHES MINIMUM AND 0.797 INCHES MAXIMUM SECOND END IN
CONNECTION TYPETHREADED EXTERNAL TUBE THIRD END
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF) FIRST END
LEG LENGTH0.859 INCHES MINIMUM AND 0.906 INCHES MAXIMUM THIRD END IN
THREAD CLASS3A FIRST END A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
AS4842/1Interchangeable
interchangeable cross-reference
interchangeable
AS5198J161616Interchangeable
interchangeable cross-reference
interchangeable
SAE-AS4842/1Interchangeable
interchangeable cross-reference
interchangeable
8-856-1Interchangeable
interchangeable cross-reference
interchangeable
MS20826Interchangeable
interchangeable cross-reference
interchangeable
MILF5509Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AN826-4S?
AN826-4S is a ADAPTER,STRAIGHT,PIPE TO BOSS.
What parts can replace AN826-4S?
There are 7 known substitutes for AN826-4S: AS4842/1, AS5198J161616, SAE-AS4842/1 and 4 more. Substitute compatibility should be verified for your specific system.
Is AN826-4S still available?
AN826-4S is currently cancelled.
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