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AN816-4C — ADAPTER,STRAIGHT,PIPE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

AN816-4C: ADAPTER,STRAIGHT,PIPE TO BOSS.

The ADAPTER,STRAIGHT,PIPE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 OVERALL, thread_class: 3A SECOND END A, connection_type: THREADED EXTERNAL BOSS SECOND END, connection_style: FLARED W/ GASKET SEAL (BOSS) SECOND END, surface_treatment: PASSIVATE OVERALL, nominal_thread_size: 0.125 INCHES FIRST END IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-698-4035, 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
AN816-4C
NSN: 4730-00-698-4035
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 88044 — AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE (USA)
SPECIFICATIONS
materialSTEEL COMP 304 OVERALL
thread_class3A SECOND END A
connection_typeTHREADED EXTERNAL BOSS SECOND END
connection_styleFLARED W/ GASKET SEAL (BOSS) SECOND END
surface_treatmentPASSIVATE OVERALL
nominal_thread_size0.125 INCHES FIRST END IN
nominal_overall_length1.109 INCHES IN
end_item_identificationGRUMMAN A-10A ACFT. A
thread_series_designatorANPT FIRST END
specification/standard_data81343 AS5194 GOVERNMENT STANDARD
material_document_and_classificationAMS-QQ-S-763 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5639 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationMIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE INSIDE
NSN4730-00-698-4035
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AN816-4C · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE INSIDE
•
CONNECTION STYLE: FLARED W/ GASKET SEAL (BOSS) SECOND END
•
NOMINAL OVERALL LENGTH: 1.109 INCHES IN
•
CONNECTION TYPE: THREADED EXTERNAL BOSS SECOND END
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS-QQ-S-763 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5639 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE INSIDE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-F-14072,E300,TY2 MIL SPEC SINGLE TREATMENT RESPONSE OUTSIDE
CONNECTION STYLEFLARED W/ GASKET SEAL (BOSS) SECOND END
CONNECTION STYLEPLAIN (PIPE) FIRST END
NOMINAL OVERALL LENGTH1.109 INCHES IN
CONNECTION TYPETHREADED EXTERNAL BOSS SECOND END
CONNECTION TYPETHREADED EXTERNAL PIPE FIRST END
MATERIAL DOCUMENT AND CLASSIFICATIONAMS-QQ-S-763 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5639 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD SIZE0.438 INCHES SECOND END IN
NOMINAL THREAD SIZE0.125 INCHES FIRST END IN
SUBSTITUTES & CROSS-REFERENCES 6
AS5194J0402Reference document
Same NSN cross-reference
Reference document — Secondary reference
5217X4Reference document
Same NSN cross-reference
Reference document — Secondary reference
208327Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
310557-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
4730006984035Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS4842/1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AN816-4C?
AN816-4C is a ADAPTER,STRAIGHT,PIPE TO BOSS.
What parts can replace AN816-4C?
There are 6 known substitutes for AN816-4C: AS5194J0402, 5217X4, 208327 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AN816-4C?
AN816-4C is cataloged in the U.S. Government catalog under NSN 4730-00-698-4035. This indicates validated use in U.S. government and defense supply chains.
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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.