KC126K28 — UNION,TUBE

✓ Government record, cited

— · HOSE FITTING

PRODUCT OVERVIEW

KC126K28: UNION,TUBE.

The UNION,TUBE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 OVERALL, seat_angle: 37.0 DEGREES FIRST END, thread_class: 3A FIRST END A, connection_type: THREADED EXTERNAL TUBE FIRST END, connection_style: FLARED (TUBE) FIRST END, special_features: MACHINED GROOVE IN FLARED ENDS TO ACCOMMODATE SEAL RING PER KC103. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-086-5730, 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

KC126K28

NSN: 4730-01-086-5730
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 22264 — JOHN F KENNEDY SPACE CENTER DBA NASA DIV KENNEDY SPACE CENTER (USA)

SPECIFICATIONS

material	STEEL COMP 316 OVERALL
seat_angle	37.0 DEGREES FIRST END
thread_class	3A FIRST END A
connection_type	THREADED EXTERNAL TUBE FIRST END
connection_style	FLARED (TUBE) FIRST END
special_features	MACHINED GROOVE IN FLARED ENDS TO ACCOMMODATE SEAL RING PER KC103
style_designator	FLARED W/ CENTER WRENCHING FACILITY
surface_treatment	PASSIVATE OVERALL
nominal_thread_size	2.250 INCHES FIRST END IN
nominal_overall_length	2.828 INCHES IN
thread_quantity_per_inch	12 FIRST END
thread_series_designator	UN FIRST END
NSN	4730-01-086-5730

COMPONENT DIAGRAM

KEY FEATURES

•

CONNECTION STYLE: FLARED (TUBE) FIRST END

•

NOMINAL OVERALL LENGTH: 2.828 INCHES IN

•

CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST END

•

STYLE DESIGNATOR: FLARED W/ CENTER WRENCHING FACILITY

•

NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 1.750 INCHES FIRST END IN

•

NOMINAL THREAD SIZE: 2.250 INCHES FIRST END IN

•

SEAT ANGLE: 37.0 DEGREES FIRST END

TECHNICAL CHARACTERISTICS

CONNECTION STYLE	FLARED (TUBE) FIRST END
NOMINAL OVERALL LENGTH	2.828 INCHES IN
CONNECTION TYPE	THREADED EXTERNAL TUBE FIRST END
STYLE DESIGNATOR	FLARED W/ CENTER WRENCHING FACILITY
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED	1.750 INCHES FIRST END IN
NOMINAL THREAD SIZE	2.250 INCHES FIRST END IN
SEAT ANGLE	37.0 DEGREES FIRST END
SPECIAL FEATURES	MACHINED GROOVE IN FLARED ENDS TO ACCOMMODATE SEAL RING PER KC103
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD CLASS	3A FIRST END A

SUBSTITUTES & CROSS-REFERENCES 3

SAE-AS1251Reference document

Same NSN cross-reference

Reference document — Design control — primary reference

AS1251K28Reference document

Same NSN cross-reference

Reference document — Design control — primary reference

KC126C28Reference document

Same NSN cross-reference

Reference document — Advisory reference — outside the item-of-supply concept

LIFECYCLE

NSN statusActive· U.S. Government catalog

No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is KC126K28?

KC126K28 is a UNION,TUBE.

What parts can replace KC126K28?

There are 3 known substitutes for KC126K28: SAE-AS1251, AS1251K28, KC126C28. Substitute compatibility should be verified for your specific system.

What is the NSN for KC126K28?

KC126K28 is cataloged in the U.S. Government catalog under NSN 4730-01-086-5730. This indicates validated use in U.S. government and defense supply chains.

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