Model: MDD-452-4

Straight Shaft

Special Features:

Has 2 flats at second end .375 in. Wide, 90 degrees of each other; 3 flats near center parallel to both second end flats; 1 woodruff keyway off center

Properties:

First End Style
Splined (involute)
End Similarity
Not identical
Second End Style
Two flat grooves
Overall Length
20.750 inches
End Application
Cutter, dough-nimitz class cvn (attack aircraft carrier-nuclear)
First End Diameter
Between 0.9970 inches and 0.9990 inches
First End Spline Minor Diameter
0.8470 inches
First End Spline Major Diameter
0.9990 inches
Second End Diameter
1.0000 inches
Second End Grooved Flat Depth
0.125 inches
First End Spline Quantity
5
Material
Steel
NSN
3040-01-413-2635
Part Number
MDD-452-4
Description
Shaft,straight
CAGE
06793

A straight shaft having two or more of the following conditions: a specified surface finish designation in the range of 1 to 125 microinches (o.O25 to 3.2 micrometers), arithmetical average (aa), machined peripheral flat(s), circular groove (s), keyway(s), splines, threads, or holes. It is not designed for use in aligning by fitting into corresponding holes of another item. It may be drilled for lubricating holes. For items having an integral gear(s) or worm(s), see gearshaft (as modified). For items designed to support rotating members see axle(1), straight. For items not having the above conditions see pin, straight, headless. For items having machined ends which constitute steps see shaft(1), shouldered; axle(1), shouldered; and bolt, fluid passage.

Part MDD-452-4 NSN 3040-01-413-2635

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
22109
FIIG:
A23200
Concept No.:
1
App. Key:
B
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
A
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
126900
UFC:
65750
LTL:
RATING VARIABLE
LCL:
--
WCC:
593
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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Schedule B and Export
  • Schedule B: 8483105000
  • SITC: 74810
  • End Use: Industrial machines, other
  • NAICS: 333613
  • USDA: 1

Freight Class: Transmission shafts and cranks, except camshafts and crankshafts

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