Lubricating Oil, Engine9150-01-666-1421

NSN 9150-01-666-1421 · NIIN 016661421 · Part number 515-3971

Caterpillar Inc Div Caterpillar Defense · FSC 9150 — Oils and Greases: Cutting, Lubricating, and Hydraulic · FSG 91 — Fuels, Lubricants, Oils, and Waxes · CAGE 11083

Government record, cited

NSN 9150-01-666-1421 — this item is cataloged by the U.S. Government under National Stock Number 9150-01-666-1421. Manufacturer of record part number: 515-3971.

Also searched as 9150-01-666-1421 · 9150016661421 · NIIN 016661421 · 01-666-1421 · FSC 9150 Oils and Greases: Cutting, Lubricating, and Hydraulic · CAGE 11083 · 515-3971

Nearby stock numbers ← 9150-01-666-1138 Grease, Aircraft and Instrument · 9150-01-666-1428 Lubricating Oil, Engine →

Features

Lubricating Oil,engine — FSC 9150
Supplementary Features: LUBITAINER PACKAGE
Quantity Within Each Unit Package: 1000.0 LITERS
1 manufacturer part number on file
Manufacturer of record: Caterpillar Inc Div Caterpillar Defense

Identification

NSN: 9150-01-666-1421
NIIN: 016661421
FSC: 9150 — Oils and Greases: Cutting, Lubricating, and Hydraulic
FSG: 91 — Fuels, Lubricants, Oils, and Waxes
Primary part number: 515-3971
Manufacturer: Caterpillar Inc Div Caterpillar Defense

General Description

The Lubricating Oil,engine, cataloged under National Stock Number 9150-01-666-1421, is classified within Federal Supply Class 9150 (Oils and Greases: Cutting, Lubricating, and Hydraulic) of the Fuels, Lubricants, Oils, and Waxes group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	9150-01-666-1421
Primary Part Number	515-3971
Item Name	Lubricating Oil,engine
FSC / FSG	9150 / 91 — Oils and Greases: Cutting, Lubricating, and Hydraulic
Manufacturer	Caterpillar Inc Div Caterpillar Defense
Status	ACTIVE
Supplementary Features	LUBITAINER PACKAGE
Quantity Within Each Unit Package	1000.0 LITERS

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	Hazardous per DLA record (HMIC D)
Criticality Code	X

Cross-Reference Index

Part Number	Manufacturer
515-3971 PRIMARY	Caterpillar Inc Div Caterpillar Defense (USA)

Frequently Asked Questions

What is NSN 9150-01-666-1421?

NSN 9150-01-666-1421 is a Lubricating Oil,engine, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 9150, Oils and Greases: Cutting, Lubricating, and Hydraulic. Status: active.

What part numbers are listed for NSN 9150-01-666-1421?

NSN 9150-01-666-1421 has 1 manufacturer part number on file: 515-3971 (Caterpillar Inc Div Caterpillar Defense).

What are the specifications of 515-3971?

Key specifications for 515-3971: Supplementary Features: LUBITAINER PACKAGE; Quantity Within Each Unit Package: 1000.0 LITERS; Special Features: REPLACES OLD IOL 120793 / OLD CAT 381?7214; Part Name Assigned by Controlling Agency: CAT DEO?ULS 15W?40 ? NEW FORMULATION (CK?4) W. 2 specifications are documented in the U.S. Government catalog.

Is NSN 9150-01-666-1421 hazardous material?

Hazardous per DLA record (HMIC D). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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