NSN 3040-01-456-7403 · NIIN 014567403 · Part number 7579753-021
General Dynamics Land Systems Canadacorp · FSC 3040 — Miscellaneous Power Transmission Equipment · FSG 30 — Mechanical Power Transmission Equipment · CAGE 56161
Government record, cited
NSN 3040-01-456-7403 — this item is cataloged by the U.S. Government under National Stock Number 3040-01-456-7403. Manufacturer of record part number: 7579753-021.
Also searched as3040-01-456-7403 ·
3040014567403 ·
NIIN 014567403 ·
01-456-7403 ·
FSC 3040 Miscellaneous Power Transmission Equipment · CAGE 56161 · 7579753-021
First End Diameter: 0.4430 INCHES MINIMUM AND 0.4480 INCHES MAXIMUM IN
Second End Diameter: 0.4430 INCHES MINIMUM AND 0.4480 INCHES MAXIMUM IN
Largest Step Diameter: 0.4993 INCHES MINIMUM AND 0.4997 INCHES MAXIMUM IN
First End Hole Depth: 1.000 INCHES NOMINAL IN
First End Style: FLAT KEYWAY
Material Document and Classification: MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE
Identification
NSN: 3040-01-456-7403
NIIN: 014567403
FSC: 3040 — Miscellaneous Power Transmission Equipment
FSG: 30 — Mechanical Power Transmission Equipment
Primary part number: 7579753-021
Manufacturer: General Dynamics Land Systems Canadacorp
General Description
The Shaft,shouldered, cataloged under National Stock Number 3040-01-456-7403, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is General Dynamics Land Systems Canadacorp. Government technical data includes 12 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.
Technical Specifications
Parameter
Value
NSN
3040-01-456-7403
Primary Part Number
7579753-021
Item Name
Shaft,shouldered
FSC / FSG
3040 / 30 — Miscellaneous Power Transmission Equipment
Manufacturer
General Dynamics Land Systems Canadacorp
Status
ACTIVE
Step Quantity
7
First End Diameter
0.4430 INCHES MINIMUM AND 0.4480 INCHES MAXIMUM IN
Second End Diameter
0.4430 INCHES MINIMUM AND 0.4480 INCHES MAXIMUM IN
Largest Step Diameter
0.4993 INCHES MINIMUM AND 0.4997 INCHES MAXIMUM IN
First End Hole Depth
1.000 INCHES NOMINAL IN
First End Style
FLAT KEYWAY
Material Document and Classification
MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE
First End Keyway Depth
0.052 INCHES NOMINAL IN
End Similarity
NOT IDENTICAL
Second End Style
PLAIN
Material
STEEL COMP 4340
First End Keyway Width
0.0948 INCHES MINIMUM AND 0.0968 INCHES MAXIMUM IN
Other items in FSC 3040 — Miscellaneous Power Transmission Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3040-00-001-0046
3040-00-001-0046 · Item name not on file
3040-00-001-0047
3040-00-001-0047 · Item name not on file
3040-00-001-0048
3040-00-001-0048 · Item name not on file
3040-00-001-0068
3040-00-001-0068 · Item name not on file
3040-00-001-0077
3040-00-001-0077 · Item name not on file
3040-00-001-0078
3040-00-001-0078 · Item name not on file
3040-00-001-0089
3040-00-001-0089 · Item name not on file
3040-00-001-1224
3040-00-001-1224 · Item name not on file
Related Parts in Mechanical Power Transmission Equipment
3040-00-001-0046
3040-00-001-0046 · Item name not on file
3040-00-001-0047
3040-00-001-0047 · Item name not on file
3040-00-001-0048
3040-00-001-0048 · Item name not on file
3040-00-001-0068
3040-00-001-0068 · Item name not on file
3040-00-001-0077
3040-00-001-0077 · Item name not on file
3040-00-001-0078
3040-00-001-0078 · Item name not on file
3040-00-001-0089
3040-00-001-0089 · Item name not on file
3040-00-001-1224
3040-00-001-1224 · Item name not on file
Frequently Asked Questions
What is NSN 3040-01-456-7403?
NSN 3040-01-456-7403 is a Shaft,shouldered, manufactured by General Dynamics Land Systems Canadacorp, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
What part numbers are listed for NSN 3040-01-456-7403?
NSN 3040-01-456-7403 has 3 manufacturer part numbers on file: 7579753-021 (General Dynamics Land Systems Inc.), 7579753-021 (General Dynamics Land Systems Inc. Div Gdls Global Llc), 7579753-021 (General Dynamics Land Systems Canadacorp).
What are the specifications of 7579753-021?
Key specifications for 7579753-021: Step Quantity: 7; First End Diameter: 0.4430 INCHES MINIMUM AND 0.4480 INCHES MAXIMUM IN; Second End Diameter: 0.4430 INCHES MINIMUM AND 0.4480 INCHES MAXIMUM IN; Largest Step Diameter: 0.4993 INCHES MINIMUM AND 0.4997 INCHES MAXIMUM IN. 12 specifications are documented in the U.S. Government catalog.
Is NSN 3040-01-456-7403 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.