NSN 5305-01-654-0521 · NIIN 016540521 · Part number 12641179
U S Army Tank Automotive Command Amsta-Im-Mm · FSC 5305 — Screws · FSG 53 — Hardware and Abrasives · CAGE 19207
Government record, cited
NSN 5305-01-654-0521 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-654-0521. Manufacturer of record part number: 12641179.
Nearby stock numbers← 5305-01-654-0344 Screw, Close Tolerance
·
5305-01-654-0523 Screw, Cap, Hexagon Head →
5305-01-654-0521 — Screws
Features
Setscrew — FSC 5305
Head Height: 0.270 INCHES MINIMUM AND 0.293 INCHES MAXIMUM IN
Fastener Length: 4.000 INCHES MINIMUM AND 4.100 INCHES MAXIMUM IN
Thread Length: 4.000 INCHES MINIMUM AND 4.100 INCHES MAXIMUM IN
Nominal Thread Diameter: 0.375 INCHES IN
Head Style: SQUARE
Thread Direction: RIGHT-HAND
Width Between Flats: 0.362 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
Identification
NSN: 5305-01-654-0521
NIIN: 016540521
FSC: 5305 — Screws
FSG: 53 — Hardware and Abrasives
Primary part number: 12641179
Manufacturer: U S Army Tank Automotive Command Amsta-Im-Mm
General Description
The Setscrew, cataloged under National Stock Number 5305-01-654-0521, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 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.
5305-00-000-0094
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5305-00-000-1397
5305-00-000-1397 · Item name not on file
5305-00-000-2625
5305-00-000-2625 · Item name not on file
5305-00-000-3669
5305-00-000-3669 · Item name not on file
5305-00-000-3830
5305-00-000-3830 · Item name not on file
5305-00-000-3831
5305-00-000-3831 · Item name not on file
Frequently Asked Questions
What is NSN 5305-01-654-0521?
NSN 5305-01-654-0521 is a Setscrew, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5305, Screws. Status: active.
What part numbers are listed for NSN 5305-01-654-0521?
NSN 5305-01-654-0521 has 2 manufacturer part numbers on file: 12641179 (U S Army Tank Automotive Command Amsta-Im-Mm), 4177176 (Oshkosh Defense Llc).
What are the specifications of 12641179?
Key specifications for 12641179: Head Height: 0.270 INCHES MINIMUM AND 0.293 INCHES MAXIMUM IN; Fastener Length: 4.000 INCHES MINIMUM AND 4.100 INCHES MAXIMUM IN; Thread Length: 4.000 INCHES MINIMUM AND 4.100 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.375 INCHES IN. 10 specifications are documented in the U.S. Government catalog.
Is NSN 5305-01-654-0521 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.