Model: 7189604

Worm Shaft

Special Features:

No. 63 finish on od of second step, on both ends, on spline and worm teeth surfaces

Properties:

End Similarity
Not identical
Thread Length
0.495 inches first end, third portion
Thread Length
0.505 inches first end, third portion
Thread Length
0.948 inches second end, fourth portion
Spline Major Diameter
1.116 inches second end, third portion
Spline Major Diameter
1.117 inches second end, third portion
Overall Length
8.875 inches
Keyway Width
0.188 inches first end, third portion
Spline Minor Diameter
1.021 inches second end, third portion
Spline Minor Diameter
1.022 inches second end, third portion
Screw Thread Series Designator
Unf second end, fourth portion
Screw Thread Series Designator
Uns first end, third portion
Shaft Thread Direction
Right-hand first end, third portion
Shaft Thread Direction
Right-hand second end, fourth portion
Teeth Hardness Rating
Between 35.0 rockwell c and 38.0 rockwell c
Worm Thread Quantity
1
Worm Thread Lead
0.625 inches
Worm Thread Direction
Left-hand
Worm Pressure Angle In Deg
14.500
Worm Helix Angle
4 degrees 33 min.
Worm Outside Diameter
2.8975 inches
Worm Pitch Diameter
2.500 inches
Shaft Hardness Rating
Between 35.0 rockwell c and 38.0 rockwell c
Worm Thread Section Length
3.188 inches
Worm Body Length
3.563 inches
Worm Body Tapered Bearing Surface End
Not provided
Shaft Location
Both ends of worm
Straight Unthreaded Length
0.557 inches second end, second portion
Straight Unthreaded Length
0.625 inches first end, second portion
Straight Unthreaded Length
0.719 inches first end, first portion
Straight Unthreaded Length
0.719 inches second end, first portion
Straight Unthreaded Section Diameter
1.438 inches first end, first portion
Straight Unthreaded Section Diameter
1.1810 inches first end, second portion
Straight Unthreaded Section Diameter
1.1810 inches second end, second portion
Straight Unthreaded Section Diameter
1.1814 inches first end, second portion
Straight Unthreaded Section Diameter
1.1814 inches second end, second portion
Unthreaded Section Keyway Width
0.1880 inches first end, second portion
Unthreaded Section Keyway Depth
0.094 inches first end, second portion
Straight Spline Length
1.245 inches second end, third portion
Threaded Section Pin Hole Diameter
0.140 inches second end, fourth portion
Straight Spline Quantity
10 either end
Material
Steel
Material
Steel
Surface Treatment
Phosphate
Surface Treatment
Phosphate
Fsc Application Data
Launcher, 762-mm rocket, truck mounted, xm289
NSN
3040-00-385-7808
Part Number
7189604
Description
Worm Shaft
CAGE
19204

A drive shaft having helical thread(s) on a portion of its outer surface, machined bearing surface(s) and facilities for driving (other than a hub) on one or both ends of shaft. Designed to mate with a cam, gear sector, worm wheel, etc. Includes items with bearings. Excludes items having more than one worm complement of helical threads, items with a separate complement of gear teeth, and gear, worm.

Part 7189604 NSN 3040-00-385-7808

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
18249
FIIG:
T246-C
Concept No.:
App. Key:
CA
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:
019940
UFC:
08170
LTL:
85.0
LCL:
85.0
WCC:
581
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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