Nut, Plain, Extended Washer, Hexago5310-01-209-4720

NSN 5310-01-209-4720 · NIIN 012094720

FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives

Government record, cited

Also searched as 5310-01-209-4720 · 5310012094720 · NIIN 012094720 · 01-209-4720 · FSC 5310 Nuts and Washers · 803-2177518-08XX-31 · 810-2177518-08XX-31

Nearby stock numbers ← 5310-01-209-4653 · 5310-01-209-4721 Nut, Self-Locking, Hexagon →

5310-01-209-4720 — Nuts and Washers

Features

Nut,plain,extended Washer,hexago — FSC 5310
Washer Outside Diameter: 4.662 INCHES MINIMUM AND 4.672 INCHES MAXIMUM IN
Width Across Flats: 3.969 INCHES MINIMUM AND 4.031 INCHES MAXIMUM IN
Thread Series: UNS
Thread Pitch Diameters: +3.0724 TO 3.0783 INCHES IN
Washer Thickness: 0.875 INCHES NOMINAL IN
Material Document and Classification: ASTM B132 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Thread Direction: RIGHT-HAND

Identification

NSN: 5310-01-209-4720
NIIN: 012094720
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives

General Description

The Nut,plain,extended Washer,hexago, cataloged under National Stock Number 5310-01-209-4720, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5310-01-209-4720
Item Name	Nut,plain,extended Washer,hexago
FSC / FSG	5310 / 53 — Nuts and Washers
Status	ACTIVE
Washer Outside Diameter	4.662 INCHES MINIMUM AND 4.672 INCHES MAXIMUM IN
Width Across Flats	3.969 INCHES MINIMUM AND 4.031 INCHES MAXIMUM IN
Thread Series	UNS
Thread Pitch Diameters	+3.0724 TO 3.0783 INCHES IN
Washer Thickness	0.875 INCHES NOMINAL IN
Material Document and Classification	ASTM B132 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Thread Direction	RIGHT-HAND
Nominal Thread Size	3.125 INCHES IN
Nut Style	HEXAGON
Thread Quantity Per Inch	11-1/2
Material	COPPER ALLOY 864 OVERALL

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
803-2177518-08XX-31	3/2 Design control — primary reference U.S. Government activity
810-2177518-08XX-31	5/9 Secondary reference U.S. Government activity

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 5310-01-209-4720?

NSN 5310-01-209-4720 is a Nut,plain,extended Washer,hexago, classified under FSC 5310, Nuts and Washers. Status: active.

What are the specifications of 5310-01-209-4720?

Key specifications for 5310-01-209-4720: Overall Height: 1.750 INCHES NOMINAL IN; Washer Outside Diameter: 4.662 INCHES MINIMUM AND 4.672 INCHES MAXIMUM IN; Width Across Flats: 3.969 INCHES MINIMUM AND 4.031 INCHES MAXIMUM IN; Thread Series: UNS. 11 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-209-4720 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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