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MS21905D16 — TEE,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

MS21905D16: TEE,TUBE.

The TEE,TUBE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 7075 OVERALL, leg_length: 1.719 INCHES MINIMUM AND 1.766 INCHES MAXIMUM ALL ENDS IN, seat_angle: 12.0 DEGREES SECOND END, thread_class: 3A ALL ENDS A, connection_type: THREADED EXTERNAL TUBE FIRST END, connection_style: FLARELESS (TUBE) FIRST END. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-640-0822, 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
MS21905D16
NSN: 4730-00-640-0822
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialALUMINUM ALLOY 7075 OVERALL
leg_length1.719 INCHES MINIMUM AND 1.766 INCHES MAXIMUM ALL ENDS IN
seat_angle12.0 DEGREES SECOND END
thread_class3A ALL ENDS A
connection_typeTHREADED EXTERNAL TUBE FIRST END
connection_styleFLARELESS (TUBE) FIRST END
surface_treatmentANODIZE OVERALL
nominal_thread_size1.312 INCHES ALL ENDS IN
end_item_identificationUSED ON CHINOOK HELICOPTER CH-47
thread_quantity_per_inch12 ALL ENDS
thread_series_designatorUNIFIED NATIONAL JOINT (UNJ) ALL ENDS
specification/standard_data81343-AS21905 MANUFACTURERS STANDARD
NSN4730-00-640-0822
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS21905D16 · 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-A-8625,TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
CONNECTION STYLE: EXTERNAL SEAT FOR GASKET SEAL (BOSS) THIRD END
•
CONNECTION TYPE: THREADED EXTERNAL BOSS THIRD END
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 1.000 INCHES SECOND END IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) THIRD END
CONNECTION STYLEFLARELESS (TUBE) SECOND END
CONNECTION STYLEFLARELESS (TUBE) FIRST END
CONNECTION TYPETHREADED EXTERNAL BOSS THIRD END
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
CONNECTION TYPETHREADED EXTERNAL TUBE SECOND END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED1.000 INCHES SECOND END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED1.000 INCHES FIRST END IN
LEG LENGTH1.719 INCHES MINIMUM AND 1.766 INCHES MAXIMUM ALL ENDS IN
SUBSTITUTES & CROSS-REFERENCES 5
MS21905-16DReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
ER824D16Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS21905Reference document
Same NSN cross-reference
Reference document — Secondary reference
MS21905W16Reference document
Same NSN cross-reference
Reference document — Secondary reference
SAE-AS18280Reference document
Same NSN cross-reference
Reference document — Design control — primary 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 MS21905D16?
MS21905D16 is a TEE,TUBE.
What parts can replace MS21905D16?
There are 5 known substitutes for MS21905D16: MS21905-16D, ER824D16, AS21905 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS21905D16?
MS21905D16 is cataloged in the U.S. Government catalog under NSN 4730-00-640-0822. This indicates validated use in U.S. government and defense supply chains.
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