Washer, Recessed5310-00-366-3520

NSN 5310-00-366-3520 · NIIN 003663520

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

Government record, cited

Also searched as 5310-00-366-3520 · 5310003663520 · NIIN 003663520 · 00-366-3520 · FSC 5310 Nuts and Washers · 8029555 · 8029555

Nearby stock numbers ← 5310-00-366-3488 Nut, Self-Locking, Spline · 5310-00-366-3525 Nut, Self-Locking, Spline →

5310-00-366-3520 — Nuts and Washers

Features

Washer,recessed — FSC 5310
Top Recess Diameter: 1.406 INCHES NOMINAL IN
Bottom Recess Diameter: 1.406 INCHES NOMINAL IN
Top Recess Angle: 90.0 DEGREES NOMINAL
Style Designator: RECESSED BOTH SIDES
Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
Outside Diameter: 3.344 INCHES NOMINAL IN
Material Thickness: 0.500 INCHES NOMINAL IN

Identification

NSN: 5310-00-366-3520
NIIN: 003663520
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives

General Description

The Washer,recessed, cataloged under National Stock Number 5310-00-366-3520, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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	5310-00-366-3520
Item Name	Washer,recessed
FSC / FSG	5310 / 53 — Nuts and Washers
Status	ACTIVE
Top Recess Diameter	1.406 INCHES NOMINAL IN
Bottom Recess Diameter	1.406 INCHES NOMINAL IN
Top Recess Angle	90.0 DEGREES NOMINAL
Style Designator	RECESSED BOTH SIDES
Material Document and Classification	66 FED STD SINGLE MATERIAL RESPONSE OVERALL
Outside Diameter	3.344 INCHES NOMINAL IN
Material Thickness	0.500 INCHES NOMINAL IN
Bottom Recess Angle	90.0 DEGREES NOMINAL
Material	STEEL COMP 1020 OVERALL
Hole Diameter	1.281 INCHES NOMINAL 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
8029555	3/9 Design control — primary reference General Motors Corp Electro-Motive Div
8029555	5/9 Secondary reference General Motors Corp

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 5310-00-366-3520?

NSN 5310-00-366-3520 is a Washer,recessed, classified under FSC 5310, Nuts and Washers. Status: active.

What are the specifications of 5310-00-366-3520?

Key specifications for 5310-00-366-3520: Top Recess Diameter: 1.406 INCHES NOMINAL IN; Bottom Recess Diameter: 1.406 INCHES NOMINAL IN; Top Recess Angle: 90.0 DEGREES NOMINAL; Style Designator: RECESSED BOTH SIDES. 10 specifications are documented in the U.S. Government catalog.

Is NSN 5310-00-366-3520 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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