PartsTable TECHNICAL DATA SHEET

NSN 5310-01-088-0239Government record, cited

Washer, Flat5310-01-088-0239

NSN 5310-01-088-0239 · NIIN 010880239 · Part number RI1407-4 ITEM 2

Marathonnorco Aerospace, Inc. · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 08844

Government record, cited

NSN 5310-01-088-0239 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-088-0239. Manufacturer of record part number: RI1407-4 ITEM 2.

Also searched as 5310-01-088-0239 · 5310010880239 · NIIN 010880239 · 01-088-0239 · FSC 5310 Nuts and Washers · CAGE 08844 · RI1407-4 ITEM 2 · RIM1407-4-3B

Nearby stock numbers ← 5310-01-088-0226 Nut, Plain, Cone Seat, Hexagon · 5310-01-088-0240 Washer, Flat →

5310-01-088-0239 — Nuts and Washers

Features

Washer,flat — FSC 5310
1 manufacturer part number on file
Manufacturer of record: Marathonnorco Aerospace, Inc.

Identification

NSN: 5310-01-088-0239
NIIN: 010880239
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: RI1407-4 ITEM 2
Manufacturer: Marathonnorco Aerospace, Inc.

General Description

The Washer,flat, cataloged under National Stock Number 5310-01-088-0239, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Marathonnorco Aerospace, Inc.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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	Marathonnorco Aerospace, Inc. (CAGE 08844)

Technical Specifications

Parameter	Value
NSN	5310-01-088-0239
Primary Part Number	RI1407-4 ITEM 2
Item Name	Washer,flat
FSC / FSG	5310 / 53 — Nuts and Washers
Manufacturer	Marathonnorco Aerospace, 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
RI1407-4 ITEM 2 PRIMARY	Marathonnorco Aerospace, Inc. (USA)

Reference documents

Reference	Meaning
RIM1407-4-3B	C/1 Advisory reference — outside the item-of-supply concept Marathonnorco Aerospace, Inc.

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 5310-01-088-0239?

NSN 5310-01-088-0239 is a Washer,flat, manufactured by Marathonnorco Aerospace, Inc., classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-01-088-0239?

NSN 5310-01-088-0239 has 1 manufacturer part number on file: RI1407-4 ITEM 2 (Marathonnorco Aerospace, Inc.).

Is NSN 5310-01-088-0239 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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