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491616 — ADAPTER,STRAIGHT,TUBE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

491616: ADAPTER,STRAIGHT,TUBE TO BOSS.

The ADAPTER,STRAIGHT,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include special_features: BRACKET ASSEMBLY,LC, end_item_identification: GAS MONITORING SYSTEM. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-187-0490, 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
491616
NSN: 4730-00-187-0490
NIINs: 001870490, 014278420
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: H2987 — SUN TEST SYSTEMS B.V. (NLD)
SPECIFICATIONS
special_featuresBRACKET ASSEMBLY,LC
end_item_identificationGAS MONITORING SYSTEM
NSN4730-00-187-0490
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 491616 · 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
•
FURNISHED ITEMS AND QUANTITY: 2 PREFORMED PACKING
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 2 FED SPEC 1ST TREATMENT RESPONSE AND MIL-H-6083 MIL SPEC 2ND TREATMENT RESPONSE OVERALL
•
CONNECTION STYLE: FLARED W/ GASKET SEAL (BOSS) ALL ENDS
•
NOMINAL OVERALL LENGTH: 2.188 INCHES IN
•
CONNECTION TYPE: THREADED EXTERNAL BOSS ALL ENDS
•
STYLE DESIGNATOR: FLARED W/ CENTER WRENCHING FACILITY
•
NOMINAL THREAD SIZE: 1.312 INCHES ALL ENDS IN
•
SPECIFICATION/STANDARD DATA: 88044-AN815 GOVERNMENT STANDARD
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY2 PREFORMED PACKING
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC 1ST TREATMENT RESPONSE AND MIL-H-6083 MIL SPEC 2ND TREATMENT RESPONSE OVERALL
CONNECTION STYLEFLARED W/ GASKET SEAL (BOSS) ALL ENDS
NOMINAL OVERALL LENGTH2.188 INCHES IN
CONNECTION TYPETHREADED EXTERNAL BOSS ALL ENDS
STYLE DESIGNATORFLARED W/ CENTER WRENCHING FACILITY
NOMINAL THREAD SIZE1.312 INCHES ALL ENDS IN
SPECIFICATION/STANDARD DATA88044-AN815 GOVERNMENT STANDARD
SURFACE TREATMENTCADMIUM OVERALL
MEDIA FOR WHICH DESIGNEDOXYGEN, GASEOUS SECOND RESPONSE
SUBSTITUTES & CROSS-REFERENCES 6
AS4841Reference document
Same NSN cross-reference
Reference document — Secondary reference
D016F0Reference document
Same NSN cross-reference
Reference document — Secondary reference
AN815-16Reference document
Same NSN cross-reference
Reference document — Secondary reference
5365001870490Reference document
Same NSN cross-reference
Reference document — Informative reference only
AS5174-1616Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS5174Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 491616?
491616 is a ADAPTER,STRAIGHT,TUBE TO BOSS.
What parts can replace 491616?
There are 6 known substitutes for 491616: AS4841, D016F0, AN815-16 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 491616?
491616 is cataloged in the U.S. Government catalog under NSN 4730-00-187-0490. 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.