Model: B831-9521-9

Worm Shaft

Special Features:

Part name by controlling agency: worm shaft, acme thread. Note: coat acme threads on shaft with termalene a-a-50433, prior to assembly.

Properties:

Overall Length
21.070 inches
End Application
Seawolf class submarine ssn 23, cargo bay loadline extension guide railsassembly.
Section Shape
Square first end, first portion
Worm Thread Quantity
76
Worm Thread Lead
0.166 inches
Worm Thread Direction
Right-hand
Worm Pressure Angle In Deg
14.500
Worm Helix Angle
2.4302 deg
Worm Outside Diameter
Between 1.2417 inches and 1.2500 inches
Worm Pitch Diameter
Between 1.1338 inches and 1.1578 inches
Worm Thread Section Length
12.670 inches
Worm Body Length
21.070 inches
Worm Body Tapered Bearing Surface End
Not provided
Shaft Location
One end of worm
Straight Unthreaded Length
0.250 inches first end, third portion
Straight Unthreaded Length
0.330 inches first end, fourth portion
Straight Unthreaded Length
1.500 inches first end, first portion
Straight Unthreaded Length
2.125 inches second end, first portion
Straight Unthreaded Length
4.195 inches first end, second portion
Straight Unthreaded Section Diameter
1.450 inches first end, third portion
Straight Unthreaded Section Diameter
0.748 inches second end, first portion and 0.750 inches second end, first portion
Straight Unthreaded Section Diameter
1.000 inches first end, fourth portion
Straight Unthreaded Section Diameter
1.000 inches first end, second portion
Straight Unthreaded Section Diameter
1.055 inches first end, first portion and 1.059 inches first end, first portion
Material
Copper alloy
Material
Copper alloy
NSN
3040-01-505-0529
Part Number
B831-9521-9
Description
Worm Shaft
CAGE
96169

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 B831-9521-9 NSN 3040-01-505-0529

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:
A
ESD:
A
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
23.5 X 3.0 X 3.0
Paclk Weight:
--
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:
129920
UFC:
65750
LTL:
85.0
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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