Washer, Shouldered5310-00-520-8959

NSN 5310-00-520-8959 · NIIN 005208959

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

Government record, cited

Also searched as 5310-00-520-8959 · 5310005208959 · NIIN 005208959 · 00-520-8959 · FSC 5310 Nuts and Washers

Nearby stock numbers ← 5310-00-520-8905 · 5310-00-520-9176 →

5310-00-520-8959 — Nuts and Washers

Features

Washer,shouldered — FSC 5310
Surface Finish: 100.0 MICROINCHES ALL SURFACES
Shoulder Height: 0.438 INCHES NOMINAL IN
Style Designator: SHOULDERED
Material Document and Classification: QQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Outside Diameter: 4.250 INCHES NOMINAL IN
Material Thickness: 0.060 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
Shoulder Diameter: 3.9398 INCHES MINIMUM AND 3.9410 INCHES MAXIMUM IN

Identification

NSN: 5310-00-520-8959
NIIN: 005208959
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives

General Description

The Washer,shouldered, cataloged under National Stock Number 5310-00-520-8959, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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	5310-00-520-8959
Item Name	Washer,shouldered
FSC / FSG	5310 / 53 — Nuts and Washers
Status	ACTIVE
Surface Finish	100.0 MICROINCHES ALL SURFACES
Shoulder Height	0.438 INCHES NOMINAL IN
Style Designator	SHOULDERED
Material Document and Classification	QQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Outside Diameter	4.250 INCHES NOMINAL IN
Material Thickness	0.060 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN
Shoulder Diameter	3.9398 INCHES MINIMUM AND 3.9410 INCHES MAXIMUM IN
Material	COPPER OVERALL
Hole Diameter	3.7500 INCHES MINIMUM AND 3.7512 INCHES MAXIMUM IN

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
175187-3	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 5310-00-520-8959?

NSN 5310-00-520-8959 is a Washer,shouldered, classified under FSC 5310, Nuts and Washers. Status: active.

What are the specifications of 5310-00-520-8959?

Key specifications for 5310-00-520-8959: Surface Finish: 100.0 MICROINCHES ALL SURFACES; Shoulder Height: 0.438 INCHES NOMINAL IN; Style Designator: SHOULDERED; Material Document and Classification: QQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 9 specifications are documented in the U.S. Government catalog.

Is NSN 5310-00-520-8959 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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