Nut, Self-Locking, Extended Washer5310-01-494-7026

NSN 5310-01-494-7026 · NIIN 014947026

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

Government record, cited

Also searched as 5310-01-494-7026 · 5310014947026 · NIIN 014947026 · 01-494-7026 · FSC 5310 Nuts and Washers

Nearby stock numbers ← 5310-01-494-7025 Washer, Flat · 5310-01-494-7028 Washer, Flat →

5310-01-494-7026 — Nuts and Washers

Features

Nut,self-Locking,extended Washer — FSC 5310
Lubrication: DRY FILM LUBRICANT
Washer Outside Diameter: 0.420 INCHES MAXIMUM IN
Width Across Flats: 0.305 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN
Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF)
Precious Material: SILVER
Washer Thickness: 0.019 INCHES MINIMUM IN
Thread Direction: RIGHT-HAND

Identification

NSN: 5310-01-494-7026
NIIN: 014947026
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives

General Description

The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-494-7026, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5310-01-494-7026
Item Name	Nut,self-Locking,extended Washer
FSC / FSG	5310 / 53 — Nuts and Washers
Status	ACTIVE
Lubrication	DRY FILM LUBRICANT
Washer Outside Diameter	0.420 INCHES MAXIMUM IN
Width Across Flats	0.305 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN
Thread Series	UNIFIED NATIONAL JOINT FINE (UNJF)
Precious Material	SILVER
Washer Thickness	0.019 INCHES MINIMUM IN
Thread Direction	RIGHT-HAND
Nominal Thread Size	0.250 INCHES IN
Locking Feature	PREVAILING TORQUE ALL METAL DESIGN
Surface Treatment	SILVER OVERALL
Precious Material and Location	PLATING SILVER
Nut Style	HEXAGON
Thread Class	3B
Thread Quantity Per Inch	28
Material	IRON ALLOY 660 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
VN324B048	3/2 Design control — primary 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 5310-01-494-7026?

NSN 5310-01-494-7026 is a Nut,self-Locking,extended Washer, classified under FSC 5310, Nuts and Washers. Status: active.

What are the specifications of 5310-01-494-7026?

Key specifications for 5310-01-494-7026: Lubrication: DRY FILM LUBRICANT; Overall Height: 0.219 INCHES MAXIMUM IN; Washer Outside Diameter: 0.420 INCHES MAXIMUM IN; Width Across Flats: 0.305 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN. 15 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-494-7026 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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