PartsTable TECHNICAL DATA SHEET

NSN 5310-01-239-8736Government record, cited

Washer, Flat5310-01-239-8736

NSN 5310-01-239-8736 · NIIN 012398736 · Part number B4W33551-26

Astro Enterprises Intl · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 75447

Government record, cited

NSN 5310-01-239-8736 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-239-8736. Manufacturer of record part number: B4W33551-26.

Also searched as 5310-01-239-8736 · 5310012398736 · NIIN 012398736 · 01-239-8736 · FSC 5310 Nuts and Washers · CAGE 75447 · B4W33551-26 · 4W-33551-26 · 4W-33551-26

Nearby stock numbers ← 5310-01-239-8735 · 5310-01-239-8737 →

5310-01-239-8736 — Nuts and Washers

Features

Washer,flat — FSC 5310
1 manufacturer part number on file
Manufacturer of record: Astro Enterprises Intl

Identification

NSN: 5310-01-239-8736
NIIN: 012398736
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: B4W33551-26
Manufacturer: Astro Enterprises Intl

General Description

The Washer,flat, cataloged under National Stock Number 5310-01-239-8736, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Astro Enterprises Intl. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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	Astro Enterprises Intl (CAGE 75447)

Technical Specifications

Parameter	Value
NSN	5310-01-239-8736
Primary Part Number	B4W33551-26
Item Name	Washer,flat
FSC / FSG	5310 / 53 — Nuts and Washers
Manufacturer	Astro Enterprises Intl
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
B4W33551-26 PRIMARY	Astro Enterprises Intl (USA)

Reference documents

Reference	Meaning
4W-33551-26	5/9 Secondary reference Fm Af, Llc Dba American Fan Company
4W-33551-26	5/9 Secondary reference New Philadelphia Fan Co Buffalo Forge Marine Fans

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 5310-01-239-8736?

NSN 5310-01-239-8736 is a Washer,flat, manufactured by Astro Enterprises Intl, classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-01-239-8736?

NSN 5310-01-239-8736 has 1 manufacturer part number on file: B4W33551-26 (Astro Enterprises Intl).

Is NSN 5310-01-239-8736 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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