Piston and Ring Assembly2815-01-537-7965

NSN 2815-01-537-7965 · NIIN 015377965 · Part number HMV 21E

Skf Usa Inc. · FSC 2815 — Diesel Engines and Components · FSG 28 — Engines, Turbines, and Components · CAGE 52676

Government record, cited

NSN 2815-01-537-7965 — this item is cataloged by the U.S. Government under National Stock Number 2815-01-537-7965. Manufacturer of record part number: HMV 21E.

Also searched as 2815-01-537-7965 · 2815015377965 · NIIN 015377965 · 01-537-7965 · FSC 2815 Diesel Engines and Components · CAGE 52676 · HMV 21E · W007250376

Nearby stock numbers ← 2815-01-537-7959 Ring, Piston · 2815-01-537-8320 Lock, Fuel Injection →

Features

Piston and Ring Assembly — FSC 2815
Overall Diameter: 172.0 MILLIMETERS MINIMUM MM
Thread Size and Series/type Designator: 105 M
2 manufacturer part numbers on file
Manufacturer of record: Skf Usa Inc.

Identification

NSN: 2815-01-537-7965
NIIN: 015377965
FSC: 2815 — Diesel Engines and Components
FSG: 28 — Engines, Turbines, and Components
Primary part number: HMV 21E
Manufacturer: Skf Usa Inc.

General Description

The Piston and Ring Assembly, cataloged under National Stock Number 2815-01-537-7965, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Skf Usa Inc.. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	2815-01-537-7965
Primary Part Number	HMV 21E
Item Name	Piston and Ring Assembly
FSC / FSG	2815 / 28 — Diesel Engines and Components
Manufacturer	Skf Usa Inc.
Status	ACTIVE
Overall Diameter	172.0 MILLIMETERS MINIMUM MM
Thread Size and Series/type Designator	105 M

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

Cross-Reference Index

Part Number	Manufacturer
HMV 21E PRIMARY	Skf Usa Inc. (USA)
W007250376	Defense Maritime Solutions, Inc. (USA)

No interchangeability data on file.

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

2815-00-011-9099 · Item name not on file

2815-00-017-1875

2815-00-024-4185

2815-00-024-4185 · Item name not on file

2815-00-033-1482

2815-00-033-1482 · Item name not on file

2815-00-036-5350

2815-00-036-5350 · Item name not on file

2815-00-179-7630

TUBE

2815-00-346-4639

STRAINER ASSY

2815-00-592-5308

RING,PISTON

Frequently Asked Questions

What is NSN 2815-01-537-7965?

NSN 2815-01-537-7965 is a Piston and Ring Assembly, manufactured by Skf Usa Inc., classified under FSC 2815, Diesel Engines and Components. Status: active.

What part numbers are listed for NSN 2815-01-537-7965?

NSN 2815-01-537-7965 has 2 manufacturer part numbers on file: HMV 21E (Skf Usa Inc.), W007250376 (Defense Maritime Solutions, Inc.).

What are the specifications of HMV 21E?

Key specifications for HMV 21E: Overall Diameter: 172.0 MILLIMETERS MINIMUM MM; Part Name Assigned by Controlling Agency: NUT, HYDRAULIC; Thread Size and Series/type Designator: 105 M. 2 specifications are documented in the U.S. Government catalog.

Is NSN 2815-01-537-7965 hazardous material?

No hazard code in the DLA record (HMIC N). 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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