7M637NB-D6-4 — REDUCER,TUBE

✓ Government record, cited

— · HOSE FITTING

PRODUCT OVERVIEW

7M637NB-D6-4: REDUCER,TUBE.

The REDUCER,TUBE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY OVERALL, seat_angle: 37.0 DEGREES FIRST END, reducer_type: CONCENTRIC, thread_class: 3A FIRST END A, connection_type: THREADED EXTERNAL TUBE FIRST END, connection_style: PLAIN (TUBE) SECOND END. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-159-8956, 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

7M637NB-D6-4

NSN: 4730-01-159-8956
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)

SPECIFICATIONS

material	ALUMINUM ALLOY OVERALL
seat_angle	37.0 DEGREES FIRST END
reducer_type	CONCENTRIC
thread_class	3A FIRST END A
connection_type	THREADED EXTERNAL TUBE FIRST END
connection_style	PLAIN (TUBE) SECOND END
surface_treatment	ALUMINUM OVERALL
nominal_thread_size	0.438 INCHES FIRST END IN
nominal_overall_length	0.969 INCHES IN
thread_series_designator	UNF FIRST END
material_document_and_classification	QQ-A-225/4 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-225/6 FED SPEC 2ND MATERIAL RESPONSE OVERALL
reduced_passage_nominal_inside_diameter	0.172 INCHES FIRST END IN
NSN	4730-01-159-8956

COMPONENT DIAGRAM

KEY FEATURES

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-83488,CL 3,TY 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL

•

CONNECTION STYLE: PLAIN (TUBE) SECOND END

•

NOMINAL OVERALL LENGTH: 0.969 INCHES IN

•

CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST END

•

MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/4 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-225/6 FED SPEC 2ND MATERIAL RESPONSE OVERALL

•

NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.375 INCHES SECOND END IN

TECHNICAL CHARACTERISTICS

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	MIL-C-83488,CL 3,TY 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
CONNECTION STYLE	PLAIN (TUBE) SECOND END
CONNECTION STYLE	FLARED (TUBE) FIRST END
NOMINAL OVERALL LENGTH	0.969 INCHES IN
CONNECTION TYPE	THREADED EXTERNAL TUBE FIRST END
CONNECTION TYPE	UNTHREADED EXTERNAL TUBE SECOND END
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-A-225/4 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-225/6 FED SPEC 2ND MATERIAL RESPONSE OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED	0.375 INCHES SECOND END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED	0.250 INCHES FIRST END IN
REDUCED PASSAGE NOMINAL INSIDE DIAMETER	0.172 INCHES FIRST 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 2

10108820Reference document

Same NSN cross-reference

Reference document — Informative reference only

7M637Reference document

Same NSN cross-reference

Reference document — Drawing number reference only

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 7M637NB-D6-4?

7M637NB-D6-4 is a REDUCER,TUBE.

What parts can replace 7M637NB-D6-4?

There are 2 known substitutes for 7M637NB-D6-4: 10108820, 7M637. Substitute compatibility should be verified for your specific system.

What is the NSN for 7M637NB-D6-4?

7M637NB-D6-4 is cataloged in the U.S. Government catalog under NSN 4730-01-159-8956. This indicates validated use in U.S. government and defense supply chains.

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