Ring, Retaining5325-01-017-3987

NSN 5325-01-017-3987 · NIIN 010173987 · Part number RD17258-56

Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec · FSC 5325 — Fastening Devices · FSG 53 — Hardware and Abrasives · CAGE 51663

Government record, cited

NSN 5325-01-017-3987 — this item is cataloged by the U.S. Government under National Stock Number 5325-01-017-3987. Manufacturer of record part number: RD17258-56.

Also searched as 5325-01-017-3987 · 5325010173987 · NIIN 010173987 · 01-017-3987 · FSC 5325 Fastening Devices · CAGE 51663 · RD17258-56

Nearby stock numbers ← 5325-01-017-3986 Ring, Retaining · 5325-01-017-4235 Grommet, Nonmetallic →

Features

Ring,retaining — FSC 5325
Usage Design: INTERNAL
Cross-Sectional Shape Style: DOUBLE OVAL
Outside Diameter: 0.607 INCHES NOMINAL IN
Major Thickness: 0.035 INCHES NOMINAL IN
Inside Diameter: 0.520 INCHES NOMINAL IN
Casehardening Indicator: NOT CASEHARDENED
Ring Style: SPIRAL

Identification

NSN: 5325-01-017-3987
NIIN: 010173987
FSC: 5325 — Fastening Devices
FSG: 53 — Hardware and Abrasives
Primary part number: RD17258-56
Manufacturer: Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec

General Description

The Ring,retaining, cataloged under National Stock Number 5325-01-017-3987, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec. Government technical data includes 8 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	5325-01-017-3987
Primary Part Number	RD17258-56
Item Name	Ring,retaining
FSC / FSG	5325 / 53 — Fastening Devices
Manufacturer	Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec
Status	ACTIVE
Usage Design	INTERNAL
Cross-Sectional Shape Style	DOUBLE OVAL
Outside Diameter	0.607 INCHES NOMINAL IN
Major Thickness	0.035 INCHES NOMINAL IN
Inside Diameter	0.520 INCHES NOMINAL IN
Casehardening Indicator	NOT CASEHARDENED
Ring Style	SPIRAL
Material	STEEL

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
RD17258-56 PRIMARY	Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec (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 5325-01-017-3987?

NSN 5325-01-017-3987 is a Ring,retaining, manufactured by Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec, classified under FSC 5325, Fastening Devices. Status: active.

What part numbers are listed for NSN 5325-01-017-3987?

NSN 5325-01-017-3987 has 1 manufacturer part number on file: RD17258-56 (Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec).

What are the specifications of RD17258-56?

Key specifications for RD17258-56: Usage Design: INTERNAL; Cross-Sectional Shape Style: DOUBLE OVAL; Outside Diameter: 0.607 INCHES NOMINAL IN; Major Thickness: 0.035 INCHES NOMINAL IN. 8 specifications are documented in the U.S. Government catalog.

Is NSN 5325-01-017-3987 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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