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AN820-12S — ADAPTER,STRAIGHT,PIPE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

AN820-12S: ADAPTER,STRAIGHT,PIPE TO BOSS.

The ADAPTER,STRAIGHT,PIPE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 347 OVERALL, seat_angle: 37.0 DEGREES, thread_class: 3B INTERNAL, connection_style: PRESSURE SEAL FLARED, style_designator: CAP, TUBE, FLARED, thread_direction: RIGHT-HAND INTERNAL. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-631-1270, 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
AN820-12S
NSN: 4730-00-631-1270
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 88044 — AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE (USA)
SPECIFICATIONS
materialSTEEL COMP 347 OVERALL
seat_angle37.0 DEGREES
thread_class3B INTERNAL
connection_stylePRESSURE SEAL FLARED
style_designatorCAP, TUBE, FLARED
thread_directionRIGHT-HAND INTERNAL
surface_treatmentPASSIVATE OVERALL
nominal_thread_size1.062 INCHES INTERNAL IN
thread_quantity_per_inch12 INTERNAL
thread_series_designatorUNIFIED NATIONAL JOINT (UNJ) INTERNAL
specification/standard_data88044-AN929 GOVERNMENT STANDARD AND 81343-AS4841 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
material_document_and_classification66 FED STD SINGLE MATERIAL RESPONSE OVERALL
NSN4730-00-631-1270
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AN820-12S · 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
•
CONNECTION STYLE: PRESSURE SEAL FLARED
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.750 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CAP, TUBE, FLARED
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND INTERNAL
•
NOMINAL THREAD SIZE: 1.062 INCHES INTERNAL IN
•
SEAT ANGLE: 37.0 DEGREES
•
SPECIFICATION/STANDARD DATA: 88044-AN929 GOVERNMENT STANDARD AND 81343-AS4841 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
TECHNICAL CHARACTERISTICS
CONNECTION STYLEPRESSURE SEAL FLARED
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.750 INCHES NOMINAL IN
STYLE DESIGNATORCAP, TUBE, FLARED
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND INTERNAL
NOMINAL THREAD SIZE1.062 INCHES INTERNAL IN
SEAT ANGLE37.0 DEGREES
SPECIFICATION/STANDARD DATA88044-AN929 GOVERNMENT STANDARD AND 81343-AS4841 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
SURFACE TREATMENTPASSIVATE OVERALL
THREAD CLASS3B INTERNAL
SUBSTITUTES & CROSS-REFERENCES 8
SAE-AS4841Reference document
Same NSN cross-reference
Reference document — Secondary reference
10108432Reference document
Same NSN cross-reference
Reference document — Informative reference only
AN929-12SSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
AN820-12CReference document
Same NSN cross-reference
Reference document — Secondary reference
8526681Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS4841Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AN820-12S?
AN820-12S is a ADAPTER,STRAIGHT,PIPE TO BOSS.
What parts can replace AN820-12S?
There are 8 known substitutes for AN820-12S: SAE-AS4841, 10108432, AN929-12S and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AN820-12S?
AN820-12S is cataloged in the U.S. Government catalog under NSN 4730-00-631-1270. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.