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MS21915D16-10 — ADAPTER,STRAIGHT,TUBE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

MS21915D16-10: ADAPTER,STRAIGHT,TUBE TO BOSS.

The ADAPTER,STRAIGHT,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 OR ALUMINUM ALLOY 2014 OVERALL, reducer_type: CONCENTRIC, thread_class: 3B FIRST END, connection_type: THREADED EXTERNAL BOSS SECOND END, connection_style: GASKET SEAL (BOSS) FIRST END, surface_treatment: ANODIZE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-585-7771, 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
MS21915D16-10
NSN: 4730-00-585-7771
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 OR ALUMINUM ALLOY 2014 OVERALL
reducer_typeCONCENTRIC
thread_class3B FIRST END
connection_typeTHREADED EXTERNAL BOSS SECOND END
connection_styleGASKET SEAL (BOSS) FIRST END
surface_treatmentANODIZE OVERALL
nominal_thread_size0.875 INCHES SECOND END IN
maximum_operating_temp225.0 FAHRENHEIT SINGLE RESPONSE DEGF
nominal_overall_length1.984 INCHES IN
end_item_identificationUSED ON SIKORSKY MODEL CH-54A AND CH-54B CARGO TRANSPORT HELICOPTER A
media_for_which_designedOXYGEN, GASEOUS SECOND RESPONSE
thread_quantity_per_inch12 FIRST END
NSN4730-00-585-7771
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS21915D16-10 · 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,TY 2,CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
CONNECTION STYLE: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
•
NOMINAL OVERALL LENGTH: 1.984 INCHES IN
•
CONNECTION TYPE: THREADED INTERNAL BOSS FIRST END
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/6/T6 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-225/4,T6 FED SPEC 2ND MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD SIZE: 1.312 INCHES FIRST END IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TY 2,CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
CONNECTION STYLEGASKET SEAL (BOSS) FIRST END
NOMINAL OVERALL LENGTH1.984 INCHES IN
CONNECTION TYPETHREADED INTERNAL BOSS FIRST END
CONNECTION TYPETHREADED EXTERNAL BOSS SECOND END
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/6/T6 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-225/4,T6 FED SPEC 2ND MATERIAL RESPONSE OVERALL
NOMINAL THREAD SIZE1.312 INCHES FIRST END IN
NOMINAL THREAD SIZE0.875 INCHES SECOND END IN
SPECIFICATION/STANDARD DATA96906-MS21915 GOVERNMENT STANDARD
SUBSTITUTES & CROSS-REFERENCES 2
SAE-AS18280Reference document
Same NSN cross-reference
Reference document — Secondary reference
SAE-AS21915Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MS21915D16-10?
MS21915D16-10 is a ADAPTER,STRAIGHT,TUBE TO BOSS.
What parts can replace MS21915D16-10?
There are 2 known substitutes for MS21915D16-10: SAE-AS18280, SAE-AS21915. Substitute compatibility should be verified for your specific system.
What is the NSN for MS21915D16-10?
MS21915D16-10 is cataloged in the U.S. Government catalog under NSN 4730-00-585-7771. 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.