Related Resources: hardware

Metric Key Keyway Dimensions

Engineering Hardware Design Data
ISO Hardware Specifications Table

Metric Key Keyway Dimensions Per ISO/R773 - Js9 Width Tolerance

Metric Keyway

Key & Keyway Dimensions - Millimeters
Shaft Diameter
Key Size
Keyway Width
Keyway Depth
Keyway Radius
"D"
Nominal
Hub "W"
Hub "T2"
"R"
Over
Thru
Width "W"
Height "H"
Nominal
Min
Max
Min
Max
Min
Max
6
8
2
2
2
-.0125
+.0125
1.0
1.1
0.08
0.16
8
10
3
3
3
-.0125
+.0125
1.4
1.5
0.08
0.16
10
12
4
4
4
-.0150
+.0150
1.8
1.9
0.08
0.16
12
17
5
5
5
-.0150
+.0150
2.3
2.4
0.16
0.25
17
22
6
6
6
-.0150
+.0150
2.8
2.9
0.16
0.25
22
30
8
7
8
-.0180
+0180
3.3
3.5
0.16
0.25
30
38
10
8
10
-.0180
+0180
3.3
3.5
0.25
0.40
38
44
12
8
12
.-0215
+.0215
3.3
3.5
0.25
0.40
44
50
14
9
14
.-0215
+.0215
3.8
4.0
0.25
0.40
50
58
16
10
16
.-0215
+.0215
4.3
4.5
0.25
0.40
58
65
18
11
18
.-0215
+.0215
4.4
4.6
0.25
0.40
65
75
20
12
20
-.0260
+.0260
4.9
5.1
0.40
0.60
75
85
22
14
22
-.0260
+.0260
5.4
5.6
0.40
0.60
85
95
25
14
25
-.0260
+.0260
5.4
5.6
0.40
0.60
95
110
28
16
28
-.0260
+.0260
6.4
6.6
0.40
0.60
110
130
32
18
32
-.0310
+.0310
7.4
7.6
0.40
0.60
130
150
36
20
36
-.0310
+.0310
8.4
8.7
0.70
1.00
150
170
40
22
40
-.0310
+.0310
9.4
9.7
0.70
1.00
170
200
45
25
45
-.0310
+.0310
10.4
10.7
0.70
1.00
200
230
50
28
50
-.0310
+.0310
11.4
11.7
0.70
1.00
230
260
56
32
56
-.0370
+.0370
12.4
12.7
1.20
1.60
260
290
63
32
63
-.0370
+.0370
12.4
12.7
1.20
1.60
290
330
70
36
70
-.0370
+.0370
14.4
14.7
1.20
1.60
330
380
80
40
80
-.0370
+.0370
15.4
15.7
2.00
2.50
380
440
90
45
90
-.0435
+.0435
17.4
17.7
2.00
2.50
440
500
100
50
100
-.0435
+.0435
19.5
19.8
2.00
2.50

Where:

T = D + T2

Related: