PartsTable TECHNICAL DATA SHEET

NSN 5331-01-527-7569Government record, cited

O-Ring5331-01-527-7569

NSN 5331-01-527-7569 · NIIN 015277569 · Part number 2257738

Caterpillar Inc Div Caterpillar Defense · FSC 5331 — O-ring · FSG 53 — Hardware and Abrasives · CAGE 11083

Government record, cited

NSN 5331-01-527-7569 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-527-7569. Manufacturer of record part number: 2257738.

Also searched as 5331-01-527-7569 · 5331015277569 · NIIN 015277569 · 01-527-7569 · FSC 5331 O-ring · CAGE 11083 · 2257738 · 225-7738 · 10076260 · 225-7738 · 225-7738

Nearby stock numbers ← 5331-01-527-7532 O-Ring · 5331-01-527-7570 O-Ring →

5331-01-527-7569 — O-ring

Features

O-Ring — FSC 5331
5 manufacturer part numbers on file
Manufacturer of record: Caterpillar Inc Div Caterpillar Defense

Identification

NSN: 5331-01-527-7569
NIIN: 015277569
FSC: 5331 — O-ring
FSG: 53 — Hardware and Abrasives
Primary part number: 2257738
Manufacturer: Caterpillar Inc Div Caterpillar Defense

General Description

The O-Ring, cataloged under National Stock Number 5331-01-527-7569, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Catalog Facts

Item Name	O-Ring
FSC / FSG	5331 — O-ring (FSG 53)
Manufacturers	Westrac Equipment Pty Ltd (CAGE Z02C9); Hastings Deering (aust) Pty Ltd (CAGE ZF912); William Adams Pty Ltd (CAGE Z8Q46); Caterpillar Inc Div Caterpillar Defense (CAGE 11083); Unac (CAGE F8357)

Technical Specifications

Parameter	Value
NSN	5331-01-527-7569
Primary Part Number	2257738
Item Name	O-Ring
FSC / FSG	5331 / 53 — O-ring
Manufacturer	Caterpillar Inc Div Caterpillar Defense
Status	ACTIVE

Lifecycle & Compliance

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

Cross-Reference Index

Part Number	Manufacturer
225-7738	Westrac Equipment Pty Ltd (AUS)
225-7738	Hastings Deering (aust) Pty Ltd (AUS)
225-7738	William Adams Pty Ltd (AUS)
2257738 PRIMARY	Caterpillar Inc Div Caterpillar Defense (USA)
225-7738	Unac (FRA)

Reference documents

Reference	Meaning
10076260	6/9 Informative reference only Nimikkeistokeskus Ncb Finland

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 5331-01-527-7569?

NSN 5331-01-527-7569 is a O-Ring, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5331, O-ring. Status: active.

What part numbers are listed for NSN 5331-01-527-7569?

NSN 5331-01-527-7569 has 5 manufacturer part numbers on file: 225-7738 (Westrac Equipment Pty Ltd), 225-7738 (Hastings Deering (aust) Pty Ltd), 225-7738 (William Adams Pty Ltd), 2257738 (Caterpillar Inc Div Caterpillar Defense), 225-7738 (Unac).

Is NSN 5331-01-527-7569 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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