Model: 91251

Worm Gear

Properties:

Pitch Diameter
2.9220 inches
Face Type
Straight
Bore Style
10a w/ keyway both ends
Bore Style
W/ keyway both ends
Hardness Rating
55.0 rockwell c and 62.0 rockwell c
Outside Diameter
3.123 inches
Thread Form Quantity
4
Thread Form Direction
Right-hand
Pressure Angle
14.5000 degrees
Helix Angle
7.7524 degrees
Face Width
2.000 inches
Bore Diameter
1.749 inches both ends
Keyway Width
0.250 inches both ends
Distance From Bore Center To Keyway Bottom
1.006 inches both ends
Material
Steel comp 4615
Material Specification
Qq-s-624 federal specification single material response
Style Designator
Hubless
NSN
3020-00-493-9742
Part Number
91251
Description
Gear,worm
CAGE
0BR59

A gear with teeth on its outer surface in the form of helical threads.

Part 91251 NSN 3020-00-493-9742

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05467
FIIG:
A27300
Concept No.:
1
App. Key:
AJ
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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
197339
UFC:
96710
LTL:
65.0
LCL:
--
WCC:
593
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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Schedule B and Export
  • Schedule B: 8483409000
  • SITC: 74840
  • End Use: Industrial machines, other
  • NAICS: 333612
  • USDA: 1

Freight Class: Gears and gearing, other than toothed wheels, chain sprockets and other transmission elements entered separately

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