Hole Shapes & Patterns

Standard Hole Shapes

Round Holes (R)

R = Hole diameter

Square Holes (C)

C = Length and width of square

Slotted Holes (LR)

L = Length of slot

R = Width of slot

Rectangular Holes (LC)

L = Length of rectangle

C = Width of rectangle

Hexagonal Holes (H)

H = Width of heaxagon measured across two parallel sides

Standard Hole Patterns

Triangular Pitch (T)

T = Distance from hole center to center

Also known as a ‘staggered’ or ’60 degree staggered’ pitch

Rectangular Pitch (U)

U = Distance from hole center to center

Also known as a ‘parallel’ or ‘square’ pitch

Staggered Pitch (Z)

Z = Distance from hole center to center

Diagonal Pitch (M)

M = Distance from hole center to center

Also known as a ‘staggered’ or ’45 degree staggered’ pitch

Perforated Pattern Examples

Round hole staggered pitch

(R-T)

Round hole parallel pitch

(R-U)

Square hole staggered pitch

(C-Z)

Square hole parallel pitch

(C-U)

Slotted hole staggered pitch

(LR-Z)

Slotted hole parallel pitch

(LR-U)

Rectangular hole staggered pitch

(LC-Z)

Rectangular hole parallel pitch

(LC-U)

View all perforated patterns