Model: K4278

Shouldered Shaft

Properties:

First End Style
Splined (straight)
End Similarity
Not identical
Second End Style
Splined (straight)
Overall Length
11.250 inches
First End Diameter
Between 0.9160 inches and 0.9210 inches
First End Spline Length
2.1250 inches
First End Spline Minor Diameter
Between 0.7850 inches and 0.7960 inches
First End Spline Major Diameter
Between 0.9160 inches and 0.9210 inches
Second End Diameter
Between 1.3310 inches and 1.3360 inches
Second End Spline Length
Between 2.1250 inches and 2.1880 inches
Second End Spline Minor Diameter
Between 1.2260 inches and 1.2360 inches
Second End Spline Major Diameter
Between 2.1250 inches and 2.1880 inches
Step Quantity
9
First End Spline Quantity
14
Second End Spline Quantity
26
Largest Step Diameter
1.5930 inches
Surface Finish
125.0 microinches
Material
Steel
Material Specification
Qq-s-624 federal specification all material responses
Fsc Application Data
Gearcase, transfer transmission, carrier, full-tracked
NSN
3040-00-572-8724
Part Number
K4278
Description
Shaft,shouldered
CAGE
G0768

A shaft having two or more different diameters (greater than 0.031 inches (0.79 millimeter)) along its length. It must have one or more of the following conditions: a specified surface finish designation in the range 1 to 125 microinches (0.025 to 3.2 micrometers) arithmetical average (aa), machined peripheral flat(s), circular groove(s), keyway(s), splines, threads, or holes. The ends and/or shoulders may be machined to accommodate bearings, couplings, and the like. It is not designed for use in aligning by fitting into corresponding holes of another item. For items used to support rotating members see axle(1), shouldered. For items not having any of the above conditions see pin, shoulder, headless. Excludes shaft(1), straight; and axle(1), straight.

Part K4278 NSN 3040-00-572-8724

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
22914
FIIG:
A23200
Concept No.:
1
App. Key:
A
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:
U
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
4.1000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

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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