Ring, Retaining5325-01-521-1817

NSN 5325-01-521-1817 · NIIN 015211817 · Part number 46-1440-3

Grimes Aerospace Company · FSC 5325 — Fastening Devices · FSG 53 — Hardware and Abrasives · CAGE 72914

Government record, cited

NSN 5325-01-521-1817 — this item is cataloged by the U.S. Government under National Stock Number 5325-01-521-1817. Manufacturer of record part number: 46-1440-3.

Also searched as 5325-01-521-1817 · 5325015211817 · NIIN 015211817 · 01-521-1817 · FSC 5325 Fastening Devices · CAGE 72914 · 46-1440-3

Nearby stock numbers ← 5325-01-521-1338 Grommet, Nonmetallic · 5325-01-521-1859 Ring, Retaining →

Features

Ring,retaining — FSC 5325
Outside Diameter: 6.470 INCHES NOMINAL IN
Ring Style: INTERNAL
Material: ALUMINUM ALLOY
1 manufacturer part number on file
Manufacturer of record: Grimes Aerospace Company

Identification

NSN: 5325-01-521-1817
NIIN: 015211817
FSC: 5325 — Fastening Devices
FSG: 53 — Hardware and Abrasives
Primary part number: 46-1440-3
Manufacturer: Grimes Aerospace Company

General Description

The Ring,retaining, cataloged under National Stock Number 5325-01-521-1817, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Grimes Aerospace Company. Government technical data includes 3 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	5325-01-521-1817
Primary Part Number	46-1440-3
Item Name	Ring,retaining
FSC / FSG	5325 / 53 — Fastening Devices
Manufacturer	Grimes Aerospace Company
Status	ACTIVE
Outside Diameter	6.470 INCHES NOMINAL IN
Ring Style	INTERNAL
Material	ALUMINUM ALLOY

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
46-1440-3 PRIMARY	Grimes Aerospace Company (USA)

No interchangeability data on file.

Other items in FSC 5325 — Fastening Devices

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

5325-00-000-1884

5325-00-000-1884 · Item name not on file

5325-00-000-9988

5325-00-000-9988 · Item name not on file

5325-00-001-1567

RING,RETAINING

5325-00-001-2043

FASTENER,PANEL

5325-00-001-3842

RING,RETAINING

5325-00-001-3858

5325-00-001-3858 · Item name not on file

5325-00-001-3871

RING,RETAINING

5325-00-001-4317

RING,RETAINING

Frequently Asked Questions

What is NSN 5325-01-521-1817?

NSN 5325-01-521-1817 is a Ring,retaining, manufactured by Grimes Aerospace Company, classified under FSC 5325, Fastening Devices. Status: active.

What part numbers are listed for NSN 5325-01-521-1817?

NSN 5325-01-521-1817 has 1 manufacturer part number on file: 46-1440-3 (Grimes Aerospace Company).

What are the specifications of 46-1440-3?

Key specifications for 46-1440-3: Outside Diameter: 6.470 INCHES NOMINAL IN; Ring Style: INTERNAL; Material: ALUMINUM ALLOY. 3 specifications are documented in the U.S. Government catalog.

Is NSN 5325-01-521-1817 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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