Carriage bolt DIN 603 with square neck, M 8x40, zinc-plated steel 3.6 / 4.6

This carriage bolt joins two parts with a flat head that hardly protrudes and locks itself against turning through the square neck. The data sheet gives a head diameter of 20 mm. The stated figures are thread M 8 and length 40 mm.

Benefits

• Thread M 8 at a length of 40 mm, the thread length is 22 mm.
• Flat head 20 mm across and only 4.5 mm high, so the bearing area stays large and the head hardly protrudes.
• Square 8 mm under the head, it engages in the hole and holds the bolt while it is tightened.
• The matching hexagon nut has a width across flats of 13 mm to DIN and 13 mm to ISO 8677.
• Made of zinc-plated steel 3.6 / 4.6 to DIN 603.

Applications

In timber and steel construction the M 8x40 bolt pulls the plate against the timber and the flat head stays almost flush.

Standards and conformity

Dimensions and design follow DIN 603, the matching hexagon nut complies with ISO 8677.