NSN 5305-01-668-5526 · NIIN 016685526 · Part number 4F-3646
Caterpillar Inc Div Caterpillar Defense · FSC 5305 — Screws · FSG 53 — Hardware and Abrasives · CAGE 11083
Government record, cited
NSN 5305-01-668-5526 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-668-5526. Manufacturer of record part number: 4F-3646.
Thread Series Designator: UNIFIED NATIONAL COARSE (UNC)
3 manufacturer part numbers on file
Manufacturer of record: Caterpillar Inc Div Caterpillar Defense
Identification
NSN: 5305-01-668-5526
NIIN: 016685526
FSC: 5305 — Screws
FSG: 53 — Hardware and Abrasives
Primary part number: 4F-3646
Manufacturer: Caterpillar Inc Div Caterpillar Defense
General Description
The Screw,machine, cataloged under National Stock Number 5305-01-668-5526, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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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5305-00-001-5016 · Item name not on file
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5305-00-001-9742 · Item name not on file
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5305-00-003-6694 · Item name not on file
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5305-00-003-6753 · Item name not on file
Frequently Asked Questions
What is NSN 5305-01-668-5526?
NSN 5305-01-668-5526 is a Screw,machine, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5305, Screws. Status: active.
What part numbers are listed for NSN 5305-01-668-5526?
NSN 5305-01-668-5526 has 3 manufacturer part numbers on file: PE36873 (Pearson Engineering Limited), GD00796785 (General Dynamics United Kingdom Ltd), 4F-3646 (Caterpillar Inc Div Caterpillar Defense).
What are the specifications of 4F-3646?
Key specifications for 4F-3646: Head Height: 0.44 INCHES NOMINAL IN; Fastener Length: 3.0 INCHES NOMINAL IN; Internal Drive Style: W/O INTERNAL DRIVE; Part Name Assigned by Controlling Agency: BOLT. 4 specifications are documented in the U.S. Government catalog.
Is NSN 5305-01-668-5526 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.