SC1891 — VALVE,POPPET,ENGINE

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

SC1891: VALVE,POPPET,ENGINE.

The VALVE,POPPET,ENGINE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING SEAT FACE, head_style: FLAT, stem_style: GROOVED, head_height: 0.1720 INCHES NOMINAL IN, neck_radius: 0.3750 INCHES NOMINAL IN, stem_length: 6.2031 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 2805-00-353-8921, 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

SC1891

NSN: 2805-00-353-8921
FSC: 2805 — Gasoline Reciprocating Engines, Except Aircraft; and Components
CAGE: 59875 — EATON CORP DBA EATON AEROSPACE JACKSON (USA)

SPECIFICATIONS

material	STEEL CORROSION RESISTING SEAT FACE
head_style	FLAT
stem_style	GROOVED
head_height	0.1720 INCHES NOMINAL IN
neck_radius	0.3750 INCHES NOMINAL IN
stem_length	6.2031 INCHES NOMINAL IN
groove_width	0.1250 INCHES NOMINAL IN
stem_diameter	0.4320 INCHES NOMINAL IN
chamfer_length	0.0310 INCHES NOMINAL IN
groove_diameter	0.3750 INCHES NOMINAL IN
outside_diameter	1.6406 INCHES NOMINAL IN
seat_angle_in_deg	45.0
NSN	2805-00-353-8921

COMPONENT DIAGRAM

KEY FEATURES

•

STEM DIAMETER: 0.4320 INCHES NOMINAL IN

•

HEAD HEIGHT: 0.1720 INCHES NOMINAL IN

•

STEM LENGTH: 6.2031 INCHES NOMINAL IN

•

SEAT ANGLE IN DEG: 45.0

•

CHAMFER LENGTH: 0.0310 INCHES NOMINAL IN

•

NECK RADIUS: 0.3750 INCHES NOMINAL IN

•

GROOVE DIAMETER: 0.3750 INCHES NOMINAL IN

•

DISTANCE FROM GROOVE TO STEM END: 0.3750 INCHES NOMINAL IN

TECHNICAL CHARACTERISTICS

STEM DIAMETER	0.4320 INCHES NOMINAL IN
HEAD HEIGHT	0.1720 INCHES NOMINAL IN
STEM LENGTH	6.2031 INCHES NOMINAL IN
SEAT ANGLE IN DEG	45.0
CHAMFER LENGTH	0.0310 INCHES NOMINAL IN
NECK RADIUS	0.3750 INCHES NOMINAL IN
GROOVE DIAMETER	0.3750 INCHES NOMINAL IN
DISTANCE FROM GROOVE TO STEM END	0.3750 INCHES NOMINAL IN
OUTSIDE DIAMETER	1.6406 INCHES NOMINAL IN
STEM STYLE	GROOVED

OTHER ITEMS IN FSC 2805 — Gasoline Reciprocating Engines, Except Aircraft; and Components

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

2805-00-010-2959 2805-00-066-3426 2805-00-326-0797 2805-00-395-7778 2805-00-422-9321 2805-00-447-9114 2805-00-448-0786 2805-00-561-9463

SUBSTITUTES & CROSS-REFERENCES 2

T427I326Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

V1782SReference document

Same NSN cross-reference

Reference document — Secondary reference

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 SC1891?

SC1891 is a VALVE,POPPET,ENGINE.

What parts can replace SC1891?

There are 2 known substitutes for SC1891: T427I326, V1782S. Substitute compatibility should be verified for your specific system.

What is the NSN for SC1891?

SC1891 is cataloged in the U.S. Government catalog under NSN 2805-00-353-8921. This indicates validated use in U.S. government and defense supply chains.

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