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10503899 — ADAPTER,STRAIGHT,TUBE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

10503899: ADAPTER,STRAIGHT,TUBE TO BOSS.

The ADAPTER,STRAIGHT,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, seat_angle: 37.0 DEGREES FIRST END, thread_class: 2A CENTER BULKHEAD A, connection_type: THREADED EXTERNAL BOSS SECOND END, connection_style: FLARED W/ GASKET SEAL (BOSS) SECOND END, special_features: WEAPON SYSTEM ESSENTIAL. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-226-6772, 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
10503899
NSN: 4730-00-226-6772
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 56161 — GENERAL DYNAMICS LAND SYSTEMS CANADACORP (CAN)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
seat_angle37.0 DEGREES FIRST END
thread_class2A CENTER BULKHEAD A
connection_typeTHREADED EXTERNAL BOSS SECOND END
connection_styleFLARED W/ GASKET SEAL (BOSS) SECOND END
special_featuresWEAPON SYSTEM ESSENTIAL
surface_treatmentPASSIVATE OVERALL
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.750 INCHES ALL ENDS IN
nominal_overall_length2.440 INCHES IN
media_for_which_designedHYDRAULIC FLUID SINGLE RESPONSE
thread_series_designatorUNF ALL ENDS
NSN4730-00-226-6772
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 10503899 · 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 TUBE COUPLING NUT W/SLEEVE AND 1 PREFORMED PACKING AND 1 BULKHEAD NUT
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM A380 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
CONNECTION STYLE: FLARED W/ GASKET SEAL (BOSS) SECOND END
•
NOMINAL OVERALL LENGTH: 2.440 INCHES IN
•
CRITICALITY CODE JUSTIFICATION: FEAT
•
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST END
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY2 TUBE COUPLING NUT W/SLEEVE AND 1 PREFORMED PACKING AND 1 BULKHEAD NUT
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM A380 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
CONNECTION STYLEFLARED W/ GASKET SEAL (BOSS) SECOND END
CONNECTION STYLEFLARED (TUBE) FIRST END
NOMINAL OVERALL LENGTH2.440 INCHES IN
CRITICALITY CODE JUSTIFICATIONFEAT
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
CONNECTION TYPETHREADED EXTERNAL BOSS SECOND END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.500 INCHES FIRST END IN
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
SUBSTITUTES & CROSS-REFERENCES 7
6HA793Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
8WTX-WLN-SSReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
3005885Reference document
Same NSN cross-reference
Reference document — Secondary reference
8-8 070601SAReference document
Same NSN cross-reference
Reference document — Secondary reference
MS51520A8SReference document
Same NSN cross-reference
Reference document — Secondary reference
2041-8-8CReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 10503899?
10503899 is a ADAPTER,STRAIGHT,TUBE TO BOSS.
What parts can replace 10503899?
There are 7 known substitutes for 10503899: 6HA793, 8WTX-WLN-SS, 3005885 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 10503899?
10503899 is cataloged in the U.S. Government catalog under NSN 4730-00-226-6772. 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.