11691-08 — PISTON,INTERNAL COMBUSTION ENGIN

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

11691-08: PISTON,INTERNAL COMBUSTION ENGIN.

PISTON,INTERNAL COMBUSTION ENGIN. Key specifications include diameter: 3.875 INCHES NOMINAL IN, oversize: 0.020 INCHES NOMINAL IN, cut_depth: 0.500 INCHES NOMINAL IN, head_style: DISH, oil_groove: INCLUDED, skirt_type: SOLID. This part is cataloged in the U.S.

Government catalog under NSN 2840-00-908-0562, 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

11691-08

NSN: 2840-00-908-0562
NIINs: 009080562, 009979841
FSC: 2840 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components
CAGE: 76680 — FEDERAL-MOGUL CORP CHASSIS PRODUCTS DIV (USA)

SPECIFICATIONS

diameter	3.875 INCHES NOMINAL IN
oversize	0.020 INCHES NOMINAL IN
cut_depth	0.500 INCHES NOMINAL IN
head_style	DISH
oil_groove	INCLUDED
skirt_type	SOLID
carbon_groove	NOT INCLUDED
overall_height	3.625 INCHES NOMINAL IN
surface_finish	FINISHED
oil_passage_type	SLOT THIRD RING
pin_hole_bushing	NOT INCLUDED
pinhole_diameter	0.9250 INCHES NOMINAL IN
NSN	2840-00-908-0562

COMPONENT DIAGRAM

SUBSTITUTES & CROSS-REFERENCES 2

6000T44Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

6000T44P08Same 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 11691-08?

11691-08 is a PISTON,INTERNAL COMBUSTION ENGIN.

What parts can replace 11691-08?

There are 2 known substitutes for 11691-08: 6000T44, 6000T44P08. Substitute compatibility should be verified for your specific system.

What is the NSN for 11691-08?

11691-08 is cataloged in the U.S. Government catalog under NSN 2840-00-908-0562. This indicates validated use in U.S. government and defense supply chains.

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11691-08 — PISTON,INTERNAL COMBUSTION ENGIN

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