PartsTable TECHNICAL DATA SHEET

NSN 5310-01-155-9820Government record, cited

Washer, Flat5310-01-155-9820

NSN 5310-01-155-9820 · NIIN 011559820 · Part number 19AS340

Oshkosh Defense Llc · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 75Q65

Government record, cited

NSN 5310-01-155-9820 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-155-9820. Manufacturer of record part number: 19AS340.

Also searched as 5310-01-155-9820 · 5310011559820 · NIIN 011559820 · 01-155-9820 · FSC 5310 Nuts and Washers · CAGE 75Q65 · 19AS340 · 22962-8 · 2AT651 · 2AT651

Nearby stock numbers ← 5310-01-155-9819 Washer, Key · 5310-01-155-9821 Washer, Flat →

5310-01-155-9820 — Nuts and Washers

Features

Washer,flat — FSC 5310
2 manufacturer part numbers on file
Manufacturer of record: Oshkosh Defense Llc

Identification

NSN: 5310-01-155-9820
NIIN: 011559820
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 19AS340
Manufacturer: Oshkosh Defense Llc

General Description

The Washer,flat, cataloged under National Stock Number 5310-01-155-9820, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Oshkosh Defense Llc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Catalog Facts

Item Name	Washer,flat
FSC / FSG	5310 — Nuts and Washers (FSG 53)
Manufacturers	Oshkosh Defense Llc (CAGE 75Q65)

Technical Specifications

Parameter	Value
NSN	5310-01-155-9820
Primary Part Number	19AS340
Item Name	Washer,flat
FSC / FSG	5310 / 53 — Nuts and Washers
Manufacturer	Oshkosh Defense 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)
Criticality Code	Y

Cross-Reference Index

Part Number	Manufacturer
2AT651	Oshkosh Defense Llc (USA)
19AS340 PRIMARY	Oshkosh Defense Llc (USA)

Reference documents

Reference	Meaning
22962-8	5/9 Secondary reference Hme, Inc. Dba Hme Ahrens-Fox
2AT651	5/9 Secondary reference Oshkosh Corp
19AS340	5/9 Secondary reference Oshkosh Corp

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 5310-01-155-9820?

NSN 5310-01-155-9820 is a Washer,flat, manufactured by Oshkosh Defense Llc, classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-01-155-9820?

NSN 5310-01-155-9820 has 2 manufacturer part numbers on file: 2AT651 (Oshkosh Defense Llc), 19AS340 (Oshkosh Defense Llc).

Is NSN 5310-01-155-9820 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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