
22mm Ball knob available in
Thread Size Part #
Metric
6mm PB22x6
8mm PB22x8
BSW
3/16″ PB22x3/16
1/4″ PB22x1/4
5/16″ PB22x5/16

31mm Ball Knob available in
Thread size Part#
Metric
6mm PB31x6
8mm PB31x8
10mm PB31x10
12mm PB31x12
BSW
1/4″ PB31x1/4
5/16″ PB31x5/16
3/8″ PB31x3/8
7/16″ PB31x7/16
1/2″ PB31x1/2

37mm Ball Knob available in
Thread size Part#
Metric
6mm PB37x6
8mm PB37x8
10mm PB37x10
12mm PB37x12
BSW
1/4″ PB37x1/4
5/16″ PB37x5/16
3/8″ PB37x3/8
7/16″ PB37x7/16
1/2″ PB37x1/2