Technical information / hole shapes

Round holes (DIN 24041)

Example: version Rv = oblong holes,
staggered rows (also available as straight rows and diagonally staggered rows)

Square holes (DIN 24042)

Example: version Qd = square holes,
diagonally staggered rows (also available as staggered and straight rows)

Oblong holes (DIN 24043)

Example: version Lg = oblong holes,
straight rows (also available as staggered rows and with angular holes)

Today, the large variety of technical applications requires many different perforations. Lochanstalt Aherhammer has faced the challenge: we produce almost any hole shape. Examples: indented oblong holes, various combinations of different shapes such as 'keyholes' with round holes / square holes with round holes / round holes of different diameters, 'rasp-type', 'flap-type', 'louver-type' perforations, round holes with tapered necks, stampings and web punching.

Perforations of hexagonal, rhombic and triangular holes, braidings and cross-type holes are for decoration only.