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System of Measurement
Inch
Metric
Shaft Diameter
3/16"
1/4"
5/16"
3/8"
3/8"
to
5/8"
3/8"
to
15/16"
1/2"
1/2"
to 1
1/4"
5/8"
5/8"
to 1
1/2"
3/4"
7/8"
1"
1" to 1
7/8"
1
1/8"
Roller Chain Trade Number
25
35
40
40-2
41
50
50-2
60
60-2
06B
08B
08B-2
OD
0.59"
0.79"
1.09"
1.105"
1.19"
1.47"
1.56"
1.58"
1.74"
1.9"
2.272"
2.38"
2.53"
3.01"
3.17"
ID
1/4"
3/8"
1/2"
5/8"
3/4"
7/8"
1"
1
1/8"
1
3/16"
1
1/4"
1
3/8"
1
7/16"
1
1/2"
1
5/8"
1
3/4"
1.871"
1
15/16"
2"
2.186"
2
3/16"
2
1/4"
2
7/16"
2.812"
3.383"
3.83"
12 mm
15 mm
16 mm
20 mm
Pitch
0.080"
0.1227"
0.1475"
0.2"
1/4"
3/8"
1/2"
5/8"
3/4"
0.875"
2 mm
2.030 mm
3 mm
5 mm
5.080 mm
8 mm
Shaft Type
Hex
Keyed
Round
Unit Price
Less than $25
$25 to $45
$45 to $75
$75 to $120
$120 or greater
Bore Type
Bushing
Finished
Keyed
Plain
Round
Hub Diameter
3/8"
1/2"
0.547"
0.609"
5/8"
0.676"
0.688"
0.72"
0.734"
3/4"
0.79"
7/8"
1
1/8"
1
1/2"
1.625"
Material
Aluminum
Brass
Iron
Plastic
Stainless Steel
Steel
Component
Gear
Shaft Mount Type
Press Fit
Set Screw
Overall Width
5/16"
3/8"
13/32"
0.437"
0.438"
1/2"
0.516"
0.563"
0.609"
5/8"
0.688"
3/4"
0.774"
13/16"
0.813"
Keyway Width
0.094"
1/8"
3/16"
0.188"
1/4"
5/16"
3/8"
1/2"
5/8"
4 mm
Strand Type
Single
Double
Chain Standard
ANSI
ISO
Sprocket Type
Drive
Keyway Depth
0.047"
0.063"
3/32"
0.094"
1/8"
5/32"
3/16"
1/4"
5/16"
1.8 mm
REACH
Compliant
Not Compliant
Bushing Trade Number
1610
2012
2517
SH
SDS
SK
E
F
P1
Q1
Export Control Classification Number (ECCN)
EAR99
DFARS Specialty Metals
Exempt
RoHS
Compliant
Compliant with Exemptions
Not Compliant
Gear Pitch Diameter
0.563"
3/4"
1
1/8"
1
1/2"
1.8"
2
1/4"
3"
4
1/2"
6"
18 mm
28.8 mm
36 mm
54 mm
72 mm
Chain Type
Roller
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