Electrical Knockout Plugs

Stimpson offers Electrical Knockout Plugs in six basic sizes: 1/2”, 3/4”, 1”, 1-1/4”, 1-1/2”, and 2”.

Variations for special situations are also available.

electricalhpelectrichpdiagsm

Electrical Knockout Hole Plugs Dimensions
Part Number Electrical Knockout Head Dimensions Length Overall
Size (Diameter) (Height)
D3683 1/2 1-5/64 1/16 23/64
D5583 1/2 1-5/64 1/16 23/64
D3720 3/4 1-1/4 1/16 5/16
D3833 1 1-1/2 5/64 11/32
D5724 1.112 1-1/4 1/16 21/64
D3916 1-1/4 1-13/16 1/16 5/16
D4134 1-1/4 1-13/16 1/16 5/16
D3924 1-1/2 2-7/32 5/64 23/64
D4455 2 2-11/16 5/64 3/8
D4490 2 2-11/16 5/64 3/8

Stimpson offers Electrical Knockout Plugs in six basic sizes: 1/2”, 3/4”, 1”, 1-1/4”, 1-1/2”, and 2”. Variations for special situations are also available. electricalhpelectrichpdiagsm

Electrical Knockout Hole Plugs Dimensions
Part Number D3683
Electrical Knockout 1/2 (Size)
Head Dimensions 1-5/64(Diameter)
1/16 (Height)
Length Overall 23/64
Part Number D5583
Electrical Knockout 1/2 (Size)
Head Dimensions 1-5/64 (Diameter)
1/16 (Height)
Length Overall 23/64
Part Number D3720
Electrical Knockout 3/4 (Size)
Head Dimensions 1-1/4 (Diameter)
1/16 (Height)
Length Overall 5/16
Part Number D3833
Electrical Knockout 1 (Size)
Head Dimensions 1-1/2 (Diameter)
5/64 (Height)
Length Overall 11/32
Part Number D5724
Electrical Knockout 1.112 (Size)
Head Dimensions 1-1/4 (Diameter)
1/16 (Height)
Length Overall 21/64
Part Number D3916
Electrical Knockout 1-1/4 (Size)
Head Dimensions 1-13/16 (Diameter)
1/16 (Height)
Length Overall 5/16
Part Number D4134
Electrical Knockout 1-1/4 (Size)
Head Dimensions 1-13/16 (Diameter)
1/16 (Height)
Length Overall 5/16
Part Number D3924
Electrical Knockout 1-1/2 (Size)
Head Dimensions 2-7/32 (Diameter)
5/64 (Height)
Length Overall 23/64
Part Number D4455
Electrical Knockout 2 (Size)
Head Dimensions 2-11/16 (Diameter)
5/64 (Height)
Length Overall 3/8
Part Number D4490
Electrical Knockout 2 (Size)
Head Dimensions 2-11/16 (Diameter)
5/64 (Height)
Length Overall 3/8