MS21923-4S — ADAPTER,STRAIGHT,TUBE TO BOSS

✓ Government record, cited

— · HOSE FITTING

PRODUCT OVERVIEW

MS21923-4S: ADAPTER,STRAIGHT,TUBE TO BOSS.

The ADAPTER,STRAIGHT,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 347 OVERALL, seat_angle: 12.0 DEGREES FIRST END, thread_class: 3A ALL ENDS A, connection_style: FLARELESS (TUBE) FIRST END, surface_treatment: PASSIVATE OVERALL, nominal_thread_size: 0.438 INCHES FIRST END BULKHEAD IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-052-6401, 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

MS21923-4S

NSN: 4730-00-052-6401
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)

SPECIFICATIONS

material	STEEL COMP 347 OVERALL
seat_angle	12.0 DEGREES FIRST END
thread_class	3A ALL ENDS A
connection_style	FLARELESS (TUBE) FIRST END
surface_treatment	PASSIVATE OVERALL
nominal_thread_size	0.438 INCHES FIRST END BULKHEAD IN
nominal_overall_length	1.750 INCHES IN
thread_series_designator	UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END BULKHEAD
material_document_and_classification	66 FED STD ALL MATERIAL RESPONSES OVERALL
nominal_outside_diameter_tube_accommodated	0.250 INCHES FIRST END IN
NSN	4730-00-052-6401

COMPONENT DIAGRAM

KEY FEATURES

•

CONNECTION STYLE: FLARED W/ GASKET SEAL (BOSS) SECOND END

•

NOMINAL OVERALL LENGTH: 1.750 INCHES IN

•

MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL

•

NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES FIRST END IN

•

NOMINAL THREAD SIZE: 0.438 INCHES FIRST END BULKHEAD IN

•

SEAT ANGLE: 12.0 DEGREES FIRST END

TECHNICAL CHARACTERISTICS

CONNECTION STYLE	FLARED W/ GASKET SEAL (BOSS) SECOND END
CONNECTION STYLE	FLARELESS (TUBE) FIRST END
NOMINAL OVERALL LENGTH	1.750 INCHES IN
MATERIAL DOCUMENT AND CLASSIFICATION	66 FED STD ALL MATERIAL RESPONSES OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED	0.250 INCHES FIRST END IN
NOMINAL THREAD SIZE	0.438 INCHES FIRST END BULKHEAD IN
NOMINAL THREAD SIZE	0.438 INCHES ALL ENDS IN
SEAT ANGLE	12.0 DEGREES FIRST END
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD CLASS	3A FIRST END BULKHEAD A

SUBSTITUTES & CROSS-REFERENCES 3

AS18280Reference document

Same NSN cross-reference

Reference document — Secondary reference

AS21923Reference 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 MS21923-4S?

MS21923-4S is a ADAPTER,STRAIGHT,TUBE TO BOSS.

What parts can replace MS21923-4S?

There are 3 known substitutes for MS21923-4S: AS18280, AS21923, SAE-AS18280. Substitute compatibility should be verified for your specific system.

What is the NSN for MS21923-4S?

MS21923-4S is cataloged in the U.S. Government catalog under NSN 4730-00-052-6401. This indicates validated use in U.S. government and defense supply chains.

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MS21923-4S — ADAPTER,STRAIGHT,TUBE TO BOSS

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