Washer, Lock5310-00-596-7665

NSN 5310-00-596-7665 · NIIN 005967665

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

Government record, cited

Also searched as 5310-00-596-7665 · 5310005967665 · NIIN 005967665 · 00-596-7665 · FSC 5310 Nuts and Washers · 12Z3039-7 · 10395381 · 12Z3039-7

Nearby stock numbers ← 5310-00-596-7664 · 5310-00-596-7666 →

5310-00-596-7665 — Nuts and Washers

Features

Washer,lock — FSC 5310
Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
Style Designator: SPLIT HELICAL-RIGHT HAND
Outside Diameter: 0.554 INCHES NOMINAL IN
Material Thickness: 0.125 INCHES NOMINAL IN
Surface Treatment: CADMIUM OR ZINC OVERALL
Material: STEEL OVERALL
Hole Diameter: 0.382 INCHES MINIMUM AND 0.398 INCHES MAXIMUM IN

Identification

NSN: 5310-00-596-7665
NIIN: 005967665
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives

General Description

The Washer,lock, cataloged under National Stock Number 5310-00-596-7665, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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	5310-00-596-7665
Item Name	Washer,lock
FSC / FSG	5310 / 53 — Nuts and Washers
Status	ACTIVE
Hardness Rating	45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
Style Designator	SPLIT HELICAL-RIGHT HAND
Outside Diameter	0.554 INCHES NOMINAL IN
Material Thickness	0.125 INCHES NOMINAL IN
Surface Treatment	CADMIUM OR ZINC OVERALL
Material	STEEL OVERALL
Hole Diameter	0.382 INCHES MINIMUM AND 0.398 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
12Z3039-7	5/2 Secondary reference U.S. Government activity
10395381	6/9 Informative reference only Nimikkeistokeskus Ncb Finland
12Z3039-7	3/9 Design control — primary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier

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 5310-00-596-7665?

NSN 5310-00-596-7665 is a Washer,lock, classified under FSC 5310, Nuts and Washers. Status: active.

What are the specifications of 5310-00-596-7665?

Key specifications for 5310-00-596-7665: Hardness Rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM; Style Designator: SPLIT HELICAL-RIGHT HAND; Outside Diameter: 0.554 INCHES NOMINAL IN; Material Thickness: 0.125 INCHES NOMINAL IN. 7 specifications are documented in the U.S. Government catalog.

Is NSN 5310-00-596-7665 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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