EJOT Washer, HTK 50/55, 500 pieces/box

EJOT Washer, HTK 50/55, 500 pieces/box.

► EJOT whasher, HTK type, with dimensions 50x55mm, with plate thickness 3mm.

EJOT whasher, HTK 50/55 type, length 55mm, is part of a fastening system (in combination with fastener TK) for mechanically fastening of insulation materials and membranes on metal roofs.

Ideal for full puncture-proof of the membranes from the screw because the screw nests within the fixture.

Suitable for thickness of insulation layer> 7cm.

From the thickness of the insulation board, the length of the screw which will be combined is determined.

The total length of HTK (whasher) + TK (fastener) should be bigger than the thickness of the insulating material at least 1,5 cm.