MS21916D3-2 — REDUCER,BOSS

✓ Government record, cited

— · HOSE FITTING

PRODUCT OVERVIEW

MS21916D3-2: REDUCER,BOSS.

The REDUCER,BOSS is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 OVERALL, seat_angle: 12.0 DEGREES SECOND END, reducer_type: CONCENTRIC, thread_class: 3A FIRST END A, connection_type: THREADED EXTERNAL TUBE SECOND END, connection_style: FLARELESS (TUBE) FIRST END. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-221-6519, 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

MS21916D3-2

NSN: 4730-01-221-6519
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)

SPECIFICATIONS

material	ALUMINUM ALLOY 2024 OVERALL
seat_angle	12.0 DEGREES SECOND END
reducer_type	CONCENTRIC
thread_class	3A FIRST END A
connection_type	THREADED EXTERNAL TUBE SECOND END
connection_style	FLARELESS (TUBE) FIRST END
nominal_thread_size	0.375 INCHES FIRST END IN
nominal_overall_length	1.047 INCHES IN
thread_series_designator	UNIFIED NATIONAL JOINT FINE (UNJF) SECOND END
specification/standard_data	96906-MS21916 GOVERNMENT STANDARD
material_document_and_classification	QQ-A-225/6,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
nominal_outside_diameter_tube_accommodated	0.188 INCHES FIRST END IN
NSN	4730-01-221-6519

COMPONENT DIAGRAM

KEY FEATURES

•

CONNECTION STYLE: FLARELESS (TUBE) SECOND END

•

NOMINAL OVERALL LENGTH: 1.047 INCHES IN

•

CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST END

•

MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/6,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL

•

NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.188 INCHES FIRST END IN

TECHNICAL CHARACTERISTICS

CONNECTION STYLE	FLARELESS (TUBE) SECOND END
CONNECTION STYLE	FLARELESS (TUBE) FIRST END
NOMINAL OVERALL LENGTH	1.047 INCHES IN
CONNECTION TYPE	THREADED EXTERNAL TUBE FIRST END
CONNECTION TYPE	THREADED EXTERNAL TUBE SECOND END
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-A-225/6,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED	0.188 INCHES FIRST END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED	0.188 INCHES SECOND END IN
NOMINAL THREAD SIZE	0.375 INCHES FIRST END IN
NOMINAL THREAD SIZE	0.312 INCHES SECOND END IN

OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008

SUBSTITUTES & CROSS-REFERENCES 1

SAE-AS18280Reference document

Same NSN cross-reference

Reference document — Design control — primary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is MS21916D3-2?

MS21916D3-2 is a REDUCER,BOSS.

What parts can replace MS21916D3-2?

There is 1 known substitute for MS21916D3-2: SAE-AS18280. Substitute compatibility should be verified for your specific system.

What is the NSN for MS21916D3-2?

MS21916D3-2 is cataloged in the U.S. Government catalog under NSN 4730-01-221-6519. This indicates validated use in U.S. government and defense supply chains.

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MS21916D3-2 — REDUCER,BOSS

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