Washer, Lock5310-01-570-3761

NSN 5310-01-570-3761 · NIIN 015703761

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

Government record, cited

Also searched as 5310-01-570-3761 · 5310015703761 · NIIN 015703761 · 01-570-3761 · FSC 5310 Nuts and Washers · AA55607-62 · MS16213-62

Nearby stock numbers ← 5310-01-570-3760 Washer, Flat · 5310-01-570-3764 Washer, Lock →

5310-01-570-3761 — Nuts and Washers

Features

Washer,lock — FSC 5310
Style Designator: FLAT EXTERNAL TEETH
Material Document and Classification: ASME B18.21.1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Outside Diameter: 0.594 INCHES NOMINAL IN
Material Thickness: 0.031 INCHES NOMINAL IN
Surface Treatment: PASSIVATE OVERALL
Material: STEEL OVERALL
Hole Diameter: 0.326 INCHES NOMINAL IN

Identification

NSN: 5310-01-570-3761
NIIN: 015703761
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives

General Description

The Washer,lock, cataloged under National Stock Number 5310-01-570-3761, 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7 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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	5310-01-570-3761
Item Name	Washer,lock
FSC / FSG	5310 / 53 — Nuts and Washers
Status	ACTIVE
Style Designator	FLAT EXTERNAL TEETH
Material Document and Classification	ASME B18.21.1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Outside Diameter	0.594 INCHES NOMINAL IN
Material Thickness	0.031 INCHES NOMINAL IN
Surface Treatment	PASSIVATE OVERALL
Material	STEEL OVERALL
Hole Diameter	0.326 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
AA55607-62	2/2 Government specification standardization U.S. Government activity
MS16213-62	5/9 Secondary reference U.S. Government activity

Frequently Asked Questions

What is NSN 5310-01-570-3761?

NSN 5310-01-570-3761 is a Washer,lock, classified under FSC 5310, Nuts and Washers. Status: active.

What are the specifications of 5310-01-570-3761?

Key specifications for 5310-01-570-3761: Style Designator: FLAT EXTERNAL TEETH; Material Document and Classification: ASME B18.21.1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.594 INCHES NOMINAL IN; Material Thickness: 0.031 INCHES NOMINAL IN. 7 specifications are documented in the U.S. Government catalog.

Is NSN 5310-01-570-3761 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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