MS21916-8-5 — REDUCER,BOSS

✓ Government record, cited

— · HOSE FITTING

PRODUCT OVERVIEW

MS21916-8-5: REDUCER,BOSS.

The REDUCER,BOSS is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, reducer_type: CONCENTRIC, thread_class: 3A SECOND END A, connection_type: THREADED EXTERNAL BOSS ALL ENDS, connection_style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS, nominal_thread_size: 0.500 INCHES SECOND END IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-037-0545, 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

MS21916-8-5

NSN: 4730-01-037-0545
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)

SPECIFICATIONS

material	STEEL OVERALL
reducer_type	CONCENTRIC
thread_class	3A SECOND END A
connection_type	THREADED EXTERNAL BOSS ALL ENDS
connection_style	EXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS
nominal_thread_size	0.500 INCHES SECOND END IN
nominal_overall_length	1.344 INCHES IN
thread_series_designator	UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END
NSN	4730-01-037-0545

COMPONENT DIAGRAM

KEY FEATURES

•

CONNECTION STYLE: EXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS

•

NOMINAL OVERALL LENGTH: 1.344 INCHES IN

•

CONNECTION TYPE: THREADED EXTERNAL BOSS ALL ENDS

•

NOMINAL THREAD SIZE: 0.500 INCHES SECOND END IN

•

THREAD CLASS: 3A FIRST END A

•

MATERIAL: STEEL OVERALL

TECHNICAL CHARACTERISTICS

CONNECTION STYLE	EXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS
NOMINAL OVERALL LENGTH	1.344 INCHES IN
CONNECTION TYPE	THREADED EXTERNAL BOSS ALL ENDS
NOMINAL THREAD SIZE	0.500 INCHES SECOND END IN
NOMINAL THREAD SIZE	0.750 INCHES FIRST END IN
THREAD CLASS	3A FIRST END A
THREAD CLASS	3A SECOND END A
MATERIAL	STEEL OVERALL
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL JOINT FINE (UNJF) SECOND END

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 MS21916-8-5?

MS21916-8-5 is a REDUCER,BOSS.

What parts can replace MS21916-8-5?

There is 1 known substitute for MS21916-8-5: SAE-AS18280. Substitute compatibility should be verified for your specific system.

What is the NSN for MS21916-8-5?

MS21916-8-5 is cataloged in the U.S. Government catalog under NSN 4730-01-037-0545. This indicates validated use in U.S. government and defense supply chains.

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