First End Diameter: 0.9950 INCHES MINIMUM AND 1.0000 INCHES MAXIMUM IN
First End Style: SPLINED (STRAIGHT)
First End Spline Length: 3.3750 INCHES NOMINAL IN
First End Spline Quantity: 5
End Similarity: IDENTICAL
First End Spline Minor Diameter: 0.8470 INCHES MINIMUM AND 0.8490 INCHES MAXIMUM IN
Material: STEEL
Identification
NSN: 3040-01-418-6442
NIIN: 014186442
FSC: 3040 — Miscellaneous Power Transmission Equipment
FSG: 30 — Mechanical Power Transmission Equipment
General Description
The Shaft,straight, cataloged under National Stock Number 3040-01-418-6442, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment 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7 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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
3040-01-418-6442
Item Name
Shaft,straight
FSC / FSG
3040 / 30 — Miscellaneous Power Transmission Equipment
Status
ACTIVE
First End Diameter
0.9950 INCHES MINIMUM AND 1.0000 INCHES MAXIMUM IN
First End Style
SPLINED (STRAIGHT)
First End Spline Length
3.3750 INCHES NOMINAL IN
First End Spline Quantity
5
End Similarity
IDENTICAL
First End Spline Minor Diameter
0.8470 INCHES MINIMUM AND 0.8490 INCHES MAXIMUM IN
Material
STEEL
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
MDD-451/MDDRF-4/W821
3/9Design control — primary reference
Belshaw Bros., Inc. Dba Belshaw Bros Inc
MDD-451
5/9Secondary reference
Belshaw Bros., Inc. Dba Belshaw Bros Inc
No interchangeability data on file.
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
Frequently Asked Questions
What is NSN 3040-01-418-6442?
NSN 3040-01-418-6442 is a Shaft,straight, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
What are the specifications of 3040-01-418-6442?
Key specifications for 3040-01-418-6442: First End Diameter: 0.9950 INCHES MINIMUM AND 1.0000 INCHES MAXIMUM IN; First End Style: SPLINED (STRAIGHT); First End Spline Length: 3.3750 INCHES NOMINAL IN; First End Spline Quantity: 5. 7 specifications are documented in the U.S. Government catalog.
Is NSN 3040-01-418-6442 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.