PartsTable TECHNICAL DATA SHEET

NSN 5331-01-616-6140Government record, cited

O-Ring5331-01-616-6140

NSN 5331-01-616-6140 · NIIN 016166140 · Part number D3112121A

Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am · FSC 5331 — O-ring · FSG 53 — Hardware and Abrasives · CAGE 0VP52

Government record, cited

NSN 5331-01-616-6140 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-616-6140. Manufacturer of record part number: D3112121A.

Also searched as 5331-01-616-6140 · 5331016166140 · NIIN 016166140 · 01-616-6140 · FSC 5331 O-ring · CAGE 0VP52 · D3112121A

Nearby stock numbers ← 5331-01-616-5930 O-Ring · 5331-01-616-6225 O-Ring →

5331-01-616-6140 — O-ring

Features

O-Ring — FSC 5331
2 manufacturer part numbers on file
Manufacturer of record: Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am

Identification

NSN: 5331-01-616-6140
NIIN: 016166140
FSC: 5331 — O-ring
FSG: 53 — Hardware and Abrasives
Primary part number: D3112121A
Manufacturer: Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am

General Description

The O-Ring, cataloged under National Stock Number 5331-01-616-6140, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am. 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	5331-01-616-6140
Primary Part Number	D3112121A
Item Name	O-Ring
FSC / FSG	5331 / 53 — O-ring
Manufacturer	Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am
Status	ACTIVE

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
D3112121A PRIMARY	Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am (USA)
D3112121A	Isotta Fraschini Motori Spa (ITA)

No interchangeability data on file.

Other items in FSC 5331 — O-ring

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

5331-00-001-1971

O-RING

5331-00-001-1979

O-RING

5331-00-001-3904

O-RING

5331-00-001-3905

O-RING

5331-00-001-3906

O-RING

5331-00-001-3908

O-RING

5331-00-001-3923

O-RING

5331-00-001-3924

O-RING

Frequently Asked Questions

What is NSN 5331-01-616-6140?

NSN 5331-01-616-6140 is a O-Ring, manufactured by Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am, classified under FSC 5331, O-ring. Status: active.

What part numbers are listed for NSN 5331-01-616-6140?

NSN 5331-01-616-6140 has 2 manufacturer part numbers on file: D3112121A (Fincantieri Marine Systems North America, Inc. Dba Fincantieri Marine Systems North Am), D3112121A (Isotta Fraschini Motori Spa).

What are the specifications of D3112121A?

Key specifications for D3112121A: Part Name Assigned by Controlling Agency: O-RING; End Item Identification: PUMP,FUEL SUP. 0 specifications are documented in the U.S. Government catalog.

Is NSN 5331-01-616-6140 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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