Ring, Retaining5325-01-509-5218

NSN 5325-01-509-5218 · NIIN 015095218

FSC 5325 — Fastening Devices · FSG 53 — Hardware and Abrasives

Government record, cited

Also searched as 5325-01-509-5218 · 5325015095218 · NIIN 015095218 · 01-509-5218 · FSC 5325 Fastening Devices · M27426 · M27426-4137D · MIL-DTL-27426/4

Nearby stock numbers ← 5325-01-509-4859 Ring, Retaining · 5325-01-509-5225 Grommet, Nonmetallic →

Features

Ring,retaining — FSC 5325
Usage Design: INTERNAL
Outside Diameter: 2.467 INCHES MINIMUM AND 2.492 INCHES MAXIMUM IN
Inside Diameter: 2.067 INCHES NOMINAL IN
Ring Style: SPIRAL
Surface Treatment: PASSIVATE
Material: STEEL CORROSION RESISTING

Identification

NSN: 5325-01-509-5218
NIIN: 015095218
FSC: 5325 — Fastening Devices
FSG: 53 — Hardware and Abrasives

General Description

The Ring,retaining, cataloged under National Stock Number 5325-01-509-5218, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5325-01-509-5218
Item Name	Ring,retaining
FSC / FSG	5325 / 53 — Fastening Devices
Status	ACTIVE
Usage Design	INTERNAL
Outside Diameter	2.467 INCHES MINIMUM AND 2.492 INCHES MAXIMUM IN
Inside Diameter	2.067 INCHES NOMINAL IN
Ring Style	SPIRAL
Surface Treatment	PASSIVATE
Material	STEEL CORROSION RESISTING

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

⇄ Related Items 2

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

5325-01-615-5404 POSSIBLE MATCH

RING,RETAINING

Possible match (shared part number)

5325-01-731-8061M2742640170D POSSIBLE MATCH

RING,RETAINING

Possible match (shared part number)Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
M27426	5/9 Secondary reference U.S. Government activity
M27426-4137D	2/2 Government specification standardization U.S. Government activity
MIL-DTL-27426/4	4/1 Identification reference U.S. Government activity

Related Parts

5325-01-615-5404POSSIBLE MATCH

RING,RETAINING

5325-01-731-8061POSSIBLE MATCH

RING,RETAINING

M2742640170D

Frequently Asked Questions

What is NSN 5325-01-509-5218?

NSN 5325-01-509-5218 is a Ring,retaining, classified under FSC 5325, Fastening Devices. Status: active.

What NSN replaces 5325-01-509-5218?

2 possible matches (shared part number, not a government interchangeability claim): 5325-01-615-5404, 5325-01-731-8061. Verify interchangeability with system specifications before substitution.

What are the specifications of 5325-01-509-5218?

Key specifications for 5325-01-509-5218: Usage Design: INTERNAL; Outside Diameter: 2.467 INCHES MINIMUM AND 2.492 INCHES MAXIMUM IN; Inside Diameter: 2.067 INCHES NOMINAL IN; Ring Style: SPIRAL. 6 specifications are documented in the U.S. Government catalog.

Is NSN 5325-01-509-5218 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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