PartsTable TECHNICAL DATA SHEET

NSN 5310-01-666-7290Government record, cited

Washer, Lock5310-01-666-7290

NSN 5310-01-666-7290 · NIIN 016667290 · Part number DIN6797-4.3 X 8.2

International Organization for Standardization (iso) · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE I9008

Government record, cited

NSN 5310-01-666-7290 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-666-7290. Manufacturer of record part number: DIN6797-4.3 X 8.2.

Also searched as 5310-01-666-7290 · 5310016667290 · NIIN 016667290 · 01-666-7290 · FSC 5310 Nuts and Washers · CAGE I9008 · DIN6797-4.3 X 8.2

Nearby stock numbers ← 5310-01-666-7269 Washer, Seal · 5310-01-666-7293 Nut, Plain, Assembled Washer →

5310-01-666-7290 — Nuts and Washers

Features

Washer,lock — FSC 5310
Surface Treatment Document and Classification: ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
Style Designator: FLAT INTERNAL TEETH
Outside Diameter: 7.64 MILLIMETERS MINIMUM AND 8.20 MILLIMETERS MAXIMUM MM
Material Thickness: 0.47 MILLIMETERS MINIMUM AND 0.53 MILLIMETERS MAXIMUM MM
Surface Treatment: PASSIVATE OVERALL
Material: STEEL CORROSION RESISTING OVERALL
Hole Diameter: 4.30 MILLIMETERS MINIMUM AND 4.48 MILLIMETERS MAXIMUM MM

Identification

NSN: 5310-01-666-7290
NIIN: 016667290
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: DIN6797-4.3 X 8.2
Manufacturer: International Organization for Standardization (iso)

General Description

The Washer,lock, cataloged under National Stock Number 5310-01-666-7290, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is International Organization for Standardization (iso). Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	5310-01-666-7290
Primary Part Number	DIN6797-4.3 X 8.2
Item Name	Washer,lock
FSC / FSG	5310 / 53 — Nuts and Washers
Manufacturer	International Organization for Standardization (iso)
Status	ACTIVE
Surface Treatment Document and Classification	ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
Style Designator	FLAT INTERNAL TEETH
Outside Diameter	7.64 MILLIMETERS MINIMUM AND 8.20 MILLIMETERS MAXIMUM MM
Material Thickness	0.47 MILLIMETERS MINIMUM AND 0.53 MILLIMETERS MAXIMUM MM
Surface Treatment	PASSIVATE OVERALL
Material	STEEL CORROSION RESISTING OVERALL
Hole Diameter	4.30 MILLIMETERS MINIMUM AND 4.48 MILLIMETERS MAXIMUM MM

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

Part Number	Manufacturer
DIN6797-4.3 X 8.2 PRIMARY	International Organization for Standardization (iso) (CHE)

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 5310-01-666-7290?

NSN 5310-01-666-7290 is a Washer,lock, manufactured by International Organization for Standardization (iso), classified under FSC 5310, Nuts and Washers. Status: active.

What part numbers are listed for NSN 5310-01-666-7290?

NSN 5310-01-666-7290 has 1 manufacturer part number on file: DIN6797-4.3 X 8.2 (International Organization for Standardization (iso)).

What are the specifications of DIN6797-4.3 X 8.2?

Key specifications for DIN6797-4.3 X 8.2: Surface Treatment Document and Classification: ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Style Designator: FLAT INTERNAL TEETH; Outside Diameter: 7.64 MILLIMETERS MINIMUM AND 8.20 MILLIMETERS MAXIMUM MM; Material Thickness: 0.47 MILLIMETERS MINIMUM AND 0.53 MILLIMETERS MAXIMUM MM. 7 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-666-7290 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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