NSN 5310-01-204-2178 · NIIN 012042178 · Part number 405-02261-07
Kato Engineering Inc. · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 32770
Government record, cited
NSN 5310-01-204-2178 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-204-2178. Manufacturer of record part number: 405-02261-07.
Also searched as5310-01-204-2178 ·
5310012042178 ·
NIIN 012042178 ·
01-204-2178 ·
FSC 5310 Nuts and Washers · CAGE 32770 · 405-02261-07
Outside Diameter: 0.664 INCHES MINIMUM AND 0.675 INCHES MAXIMUM IN
Material Thickness: 0.094 INCHES NOMINAL IN
Surface Treatment: ZINC AND CHROMATE OVERALL
Material: STEEL OVERALL
Hole Diameter: 0.382 INCHES MINIMUM AND 0.393 INCHES MAXIMUM IN
1 manufacturer part number on file
Identification
NSN: 5310-01-204-2178
NIIN: 012042178
FSC: 5310 — Nuts and Washers
FSG: 53 — Hardware and Abrasives
Primary part number: 405-02261-07
Manufacturer: Kato Engineering Inc.
General Description
The Washer,lock, cataloged under National Stock Number 5310-01-204-2178, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Kato Engineering Inc.. Government technical data includes 6 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.
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
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5310-00-000-4540 · Item name not on file
Frequently Asked Questions
What is NSN 5310-01-204-2178?
NSN 5310-01-204-2178 is a Washer,lock, manufactured by Kato Engineering Inc., classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-01-204-2178?
NSN 5310-01-204-2178 has 1 manufacturer part number on file: 405-02261-07 (Kato Engineering Inc.).
What are the specifications of 405-02261-07?
Key specifications for 405-02261-07: Style Designator: SPLIT HELICAL-RIGHT HAND; Outside Diameter: 0.664 INCHES MINIMUM AND 0.675 INCHES MAXIMUM IN; Material Thickness: 0.094 INCHES NOMINAL IN; Surface Treatment: ZINC AND CHROMATE OVERALL. 6 specifications are documented in the U.S. Government catalog.
Is NSN 5310-01-204-2178 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.