Model: 20RH379

Sprocket Wheel

Special Features:

2 holes drilled between teeth into keyway 1/8 in. Dia, located 5/16 in.From each end; end opposite securing holes countersunk 60 deg, 1/8 in. Deep

Properties:

Outside Diameter
Between 3.643 inches and 3.649 inches
Overall Length
Between 2.432 inches and 2.442 inches
Keyway Width
Between 0.2515 inches and 0.2545 inches
Thread Size
3/8 -16
Bore Diameter
Between 1.249 inches and 1.250 inches
Bore Length
Between 2.432 inches and 2.442 inches
Distance From Center Of Bore To Bottom Of Keyway
Between 0.765 inches and 0.770 inches
Pitch Diameter
Between 3.662 inches and 3.682 inches
Securing Hole Quantity
2
Furnished Items And Quantity
Nonenone
Face Width
Between 2.412 inches and 2.422 inches
Guide
Not included
Design Form
Plain
Bore Type
Straight
Metallic Hardness Rating And Location
45.0 rockwell c body and 52.0 rockwell c body
Counterbore Feature
Not included
Hole Location
Located 90 degrees each side of keyway
Keying Facility
Included
Keying Facility Type
Keyway
Securing Method
Threaded hole
Lightening Hole
Not included
Protruding Hub Characteristic
Plain
Securing Location
Aa end
Belt/chain/film Size For Which Designed
Silent chain
Teeth Row Quantity
1
Teeth Quantity Per Row
23
Hardness Rating Test Method
Rockwell
Teeth Hardness Rating
Between 45.0 rockwell c and 52.0 rockwell c
Bore Bearing
Not included
Hub External Keyway
Not included
Tooth Pitch
0.500 inches
Hub End Outside Diameter And Location
2.9375 inches both ends
Distance From Outside Flange/rim To Hub End And Location
0.007 inches both ends and 0.013 inches both ends
Material
Steel, qq-s-633, fs1020-canceled
Material
Steel comp 1020
Material Specification
Qq-s-633, fs1020-canceled federal specification single material response
Quantity
1
Style Designator
Plain
NSN
3020-00-038-4446
Part Number
20RH379
Description
Sprocket Wheel
CAGE
14351

A toothed wheel whose teeth or sprockets are designed to be engaged with the links of a pitch chain, track, or the like. It is usually used for transmitting power.

Part 20RH379 NSN 3020-00-038-4446

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
04456
FIIG:
T353-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:
U
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
117020
UFC:
59820
LTL:
60.0
LCL:
60.0
WCC:
593
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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Schedule B and Export
  • Schedule B: 8483901000
  • SITC: 74890
  • End Use: Industrial machines, other
  • NAICS: 333613
  • USDA: 1

Freight Class: Chain sprockets and parts thereof

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