Ring, Retaining5325-01-284-2437

NSN 5325-01-284-2437 · NIIN 012842437 · Part number B-4557

Cooper Machinery Services Llc · FSC 5325 — Fastening Devices · FSG 53 — Hardware and Abrasives · CAGE 14541

Government record, cited

NSN 5325-01-284-2437 — this item is cataloged by the U.S. Government under National Stock Number 5325-01-284-2437. Manufacturer of record part number: B-4557.

Also searched as 5325-01-284-2437 · 5325012842437 · NIIN 012842437 · 01-284-2437 · FSC 5325 Fastening Devices · CAGE 14541 · B-4557

Nearby stock numbers ← 5325-01-284-2436 Ring, Retaining · 5325-01-284-2465 →

Features

Ring,retaining — FSC 5325
1 manufacturer part number on file
Manufacturer of record: Cooper Machinery Services Llc

Identification

NSN: 5325-01-284-2437
NIIN: 012842437
FSC: 5325 — Fastening Devices
FSG: 53 — Hardware and Abrasives
Primary part number: B-4557
Manufacturer: Cooper Machinery Services Llc

General Description

The Ring,retaining, cataloged under National Stock Number 5325-01-284-2437, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Cooper Machinery Services Llc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Catalog Facts

Item Name	Ring,retaining
FSC / FSG	5325 — Fastening Devices (FSG 53)
Manufacturers	Cooper Machinery Services Llc (CAGE 14541)

Technical Specifications

Parameter	Value
NSN	5325-01-284-2437
Primary Part Number	B-4557
Item Name	Ring,retaining
FSC / FSG	5325 / 53 — Fastening Devices
Manufacturer	Cooper Machinery Services Llc
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
B-4557 PRIMARY	Cooper Machinery Services Llc (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 5325-01-284-2437?

NSN 5325-01-284-2437 is a Ring,retaining, manufactured by Cooper Machinery Services Llc, classified under FSC 5325, Fastening Devices. Status: active.

What part numbers are listed for NSN 5325-01-284-2437?

NSN 5325-01-284-2437 has 1 manufacturer part number on file: B-4557 (Cooper Machinery Services Llc).

Is NSN 5325-01-284-2437 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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