STSPB221 — HOUSING UNIT,IMPELLER

✓ Government record, cited

— · HOSE FITTING

PRODUCT OVERVIEW

STSPB221: HOUSING UNIT,IMPELLER.

The HOUSING UNIT,IMPELLER is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1137 OR STEEL COMP 1141 OVERALL, leg_length: 1.649 INCHES NOMINAL FIRST END BULKHEAD IN, seat_angle: 12.0 DEGREES THIRD END, thread_class: 3A FIRST END BULKHEAD A, connection_type: THREADED EXTERNAL TUBE FIRST END BULKHEAD, connection_style: FLARELESS (TUBE) FIRST END BULKHEAD. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-216-1071, 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

STSPB221

NSN: 4730-01-216-1071
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 98897 — LOCKHEED MARTIN CORP (USA)

SPECIFICATIONS

material	STEEL COMP 1137 OR STEEL COMP 1141 OVERALL
leg_length	1.649 INCHES NOMINAL FIRST END BULKHEAD IN
seat_angle	12.0 DEGREES THIRD END
thread_class	3A FIRST END BULKHEAD A
connection_type	THREADED EXTERNAL TUBE FIRST END BULKHEAD
connection_style	FLARELESS (TUBE) FIRST END BULKHEAD
surface_treatment	CADMIUM OVERALL
nominal_thread_size	0.562 INCHES THIRD END IN
thread_series_designator	UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END BULKHEAD
material_document_and_classification	QQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
nominal_outside_diameter_tube_accommodated	0.375 INCHES THIRD END IN
surface_treatment_document_and_classification	QQ-P-416,TYPE 2,CLASS 2,OLIVE DRAB COLOR FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN	4730-01-216-1071

COMPONENT DIAGRAM

KEY FEATURES

•

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TYPE 2,CLASS 2,OLIVE DRAB COLOR FED SPEC SINGLE TREATMENT RESPONSE OVERALL

•

CONNECTION STYLE: FLARELESS (TUBE) THIRD END

•

CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST END BULKHEAD

•

MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL

TECHNICAL CHARACTERISTICS

SURFACE TREATMENT DOCUMENT AND CLASSIFICATION	QQ-P-416,TYPE 2,CLASS 2,OLIVE DRAB COLOR FED SPEC SINGLE TREATMENT RESPONSE OVERALL
CONNECTION STYLE	FLARELESS (TUBE) THIRD END
CONNECTION STYLE	GASKET SEAL (BOSS) SECOND END
CONNECTION STYLE	FLARELESS (TUBE) FIRST END BULKHEAD
CONNECTION TYPE	THREADED EXTERNAL TUBE FIRST END BULKHEAD
CONNECTION TYPE	THREADED EXTERNAL TUBE THIRD END
CONNECTION TYPE	THREADED INTERNAL BOSS SECOND END
MATERIAL DOCUMENT AND CLASSIFICATION	QQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED	0.375 INCHES THIRD END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED	0.375 INCHES FIRST END BULKHEAD IN

SUBSTITUTES & CROSS-REFERENCES 2

2-02283Reference document

Same NSN cross-reference

Reference document — Drawing number reference only

STSPB221F060406Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

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 STSPB221?

STSPB221 is a HOUSING UNIT,IMPELLER.

What parts can replace STSPB221?

There are 2 known substitutes for STSPB221: 2-02283, STSPB221F060406. Substitute compatibility should be verified for your specific system.

What is the NSN for STSPB221?

STSPB221 is cataloged in the U.S. Government catalog under NSN 4730-01-216-1071. This indicates validated use in U.S. government and defense supply chains.

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