Washer, Shouldered5310-01-287-6566

NSN 5310-01-287-6566 · NIIN 012876566 · Part number 100B0221-1

West Electronics Inc · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 13136

Government record, cited

NSN 5310-01-287-6566 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-287-6566. Manufacturer of record part number: 100B0221-1.

Also searched as 5310-01-287-6566 · 5310012876566 · NIIN 012876566 · 01-287-6566 · FSC 5310 Nuts and Washers · CAGE 13136 · 100B0221-1

Nearby stock numbers ← 5310-01-287-6565 Washer, Lock · 5310-01-287-6567 Washer, Spring Tension →

5310-01-287-6566 — Nuts and Washers

Features

Washer,shouldered — FSC 5310
1 manufacturer part number on file
Manufacturer of record: West Electronics Inc

Identification

NSN: 5310-01-287-6566
NIIN: 012876566
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 100B0221-1
Manufacturer: West Electronics Inc

General Description

The Washer,shouldered, cataloged under National Stock Number 5310-01-287-6566, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is West Electronics Inc. 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	Washer,shouldered
FSC / FSG	5310 — Nuts and Washers (FSG 53)
Manufacturers	West Electronics Inc (CAGE 13136)

Technical Specifications

Parameter	Value
NSN	5310-01-287-6566
Primary Part Number	100B0221-1
Item Name	Washer,shouldered
FSC / FSG	5310 / 53 — Nuts and Washers
Manufacturer	West Electronics Inc
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
100B0221-1 PRIMARY	West Electronics Inc (USA)

No interchangeability data on file.

Other items in FSC 5310 — Nuts and Washers

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

5310-00-000-0040

5310-00-000-0040 · Item name not on file

5310-00-000-0077

NUT,PLAIN,ROUND

5310-00-000-0079

WASHER,FLAT

5310-00-000-0079

WASHER,FLAT

5310-00-000-1146

5310-00-000-1146 · Item name not on file

5310-00-000-3815

5310-00-000-3815 · Item name not on file

5310-00-000-4532

5310-00-000-4532 · Item name not on file

5310-00-000-4540

5310-00-000-4540 · Item name not on file

Frequently Asked Questions

What is NSN 5310-01-287-6566?

NSN 5310-01-287-6566 is a Washer,shouldered, manufactured by West Electronics Inc, classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-01-287-6566?

NSN 5310-01-287-6566 has 1 manufacturer part number on file: 100B0221-1 (West Electronics Inc).

Is NSN 5310-01-287-6566 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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