1S2878 — LOCK,VALVE SPRING RETAINER

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

1S2878: LOCK,VALVE SPRING RETAINER.

The LOCK,VALVE SPRING RETAINER is a the manufacturer industrial component. Key specifications include material: STEEL, overall_height: 0.384 INCHES NOMINAL IN, style_designator: STRAIGHT BORE-TOP AND BOTTOM COUNTERBORE, thread_provision: UNTHREADED, largest_outside_width: 0.454 INCHES NOMINAL IN, top_counterbore_depth: 0.135 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 2815-00-175-9472, 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

1S2878

NSN: 2815-00-175-9472
FSC: 2815 — Diesel Engines and Components
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)

SPECIFICATIONS

material	STEEL
overall_height	0.384 INCHES NOMINAL IN
style_designator	STRAIGHT BORE-TOP AND BOTTOM COUNTERBORE
thread_provision	UNTHREADED
largest_outside_width	0.454 INCHES NOMINAL IN
top_counterbore_depth	0.135 INCHES NOMINAL IN
casehardening_indicator	NOT CASEHARDENED
largest_inside_diameter	0.312 INCHES NOMINAL IN
minimum_inside_diameter	0.288 INCHES IN
bottom_counterbore_depth	0.140 INCHES NOMINAL IN
largest_outside_diameter	0.456 INCHES NOMINAL IN
outside_included_angle_in_deg	12.0
NSN	2815-00-175-9472

COMPONENT DIAGRAM

KEY FEATURES

•

MINIMUM INSIDE DIAMETER: 0.288 INCHES IN

•

THREAD PROVISION: UNTHREADED

•

LARGEST OUTSIDE DIAMETER: 0.456 INCHES NOMINAL IN

•

LARGEST INSIDE DIAMETER: 0.312 INCHES NOMINAL IN

•

STYLE DESIGNATOR: STRAIGHT BORE-TOP AND BOTTOM COUNTERBORE

•

BOTTOM COUNTERBORE DEPTH: 0.140 INCHES NOMINAL IN

•

LARGEST OUTSIDE WIDTH: 0.454 INCHES NOMINAL IN

TECHNICAL CHARACTERISTICS

OVERALL HEIGHT	0.384 INCHES NOMINAL IN
MINIMUM INSIDE DIAMETER	0.288 INCHES IN
THREAD PROVISION	UNTHREADED
LARGEST OUTSIDE DIAMETER	0.456 INCHES NOMINAL IN
LARGEST INSIDE DIAMETER	0.312 INCHES NOMINAL IN
STYLE DESIGNATOR	STRAIGHT BORE-TOP AND BOTTOM COUNTERBORE
BOTTOM COUNTERBORE DEPTH	0.140 INCHES NOMINAL IN
LARGEST OUTSIDE WIDTH	0.454 INCHES NOMINAL IN
OUTSIDE INCLUDED ANGLE IN DEG	12.0
CASEHARDENING INDICATOR	NOT CASEHARDENED

OTHER ITEMS IN FSC 2815 — Diesel Engines and Components

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

2815-00-011-9099 2815-00-017-1875 2815-00-024-4185 2815-00-033-1482 2815-00-036-5350 2815-00-179-7630 2815-00-346-4639 2815-00-592-5308

SUBSTITUTES & CROSS-REFERENCES 1

IPD1S2898Reference 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 1S2878?

1S2878 is a LOCK,VALVE SPRING RETAINER.

What parts can replace 1S2878?

There is 1 known substitute for 1S2878: IPD1S2898. Substitute compatibility should be verified for your specific system.

What is the NSN for 1S2878?

1S2878 is cataloged in the U.S. Government catalog under NSN 2815-00-175-9472. This indicates validated use in U.S. government and defense supply chains.

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1S2878 — LOCK,VALVE SPRING RETAINER

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