GN 50.4 Retaining magnets technical informations Specification Disc shaped, with bore / female thread Housing Steel, zinc plated Material of the magnet - Version HF: Hard ferrite, temperature resistant up to 200 C. - Version ND: Neodymium, iron, boron NdFeB ND, temperature resistant up to 80. Features and applications Retaining magnets GN 50.4 are a shielded magnetic system. To ensure that the magnetic properties (adhesive forces) are not impaired, the fixing screws of the types for countersunk screws and socket cap screws must be made of non-magnetic material (magnetic not conductive). Standard Elements Main dimensions Nominal adhesive forces Weight d d d d d d d Description h t in N g 1 2 3 4 5 6 7 16 4.5 GN 50.4-HF-16 3.5 - 7.5 - - - - 14 4 +0.1/-0.1 +0.2/-0.1 20 6 GN 50.4-HF-20 4.1 - 10.5 - - - - 27 9 +0.1/-0.1 +0.2/-0.1 25 7 GN 50.4-HF-25 5.5 - 12 - - - - 36 17 +0.1/-0.1 +0.3/-0.2 32 7 GN 50.4-HF-32 5.5 - 12 - - - - 72 27 +0.1/-0.1 +0.3/-0.1 40 8 GN 50.4-HF-40 5.5 - 13.5 - - - - 90 52 +0.2/-0.1 +0.4/-0.1 50 10 GN 50.4-HF-50 - 8.5 0.2 - 22 - - 8.5 180 84 +0.2/-0.1 +0.5/-0.1 63 14 GN 50.4-HF-63 - 6.5 0.2 - 24 - - 12 290 197 +0.3/-0.1 +0.5/-0.1 80 18 GN 50.4-HF-80 - 6.5 0.2 - 11.5 - - 15 540 458 +0.5/-0.1 +0.5/-0.1 100 22 GN 50.4-HF-100 - 10.50.2 - 34 - - 18 680 815 +0.5/-0.1 +0.5/-0.1 16 4.5 GN 50.4-ND-16 3.5 - 6.6 - - - - 75 6 0.1 +0.2/-0.1 20 6 GN 50.4-ND-20 4.5 - 9 - - - - 105 13 0.1 +0.2/-0.1 25 7 GN 50.4-ND-25 5.5 - 9 - - - - 160 24 0.1 +0.3/-0.2 32 7 GN 50.4-ND-32 5.5 - 11 - - - - 310 39 0.1 +0.3/-0.1 40 8 GN 50.4-ND-40 5.5 - 10.6 - - - - 500 73 +0.2/-0.1 +0.4/-0.1 7 GN 50.4-HF-25-M4 25 0.1 - - - - M4 5.2 - 36 17 +0.3/-0.2 7 GN 50.4-HF-32-M4 32 0.1 - - - - M4 5.2 - 72 29 +0.3/-0.1 40 8 GN 50.4-HF-40-M4 - - - - M4 5.2 - 90 54 +0.2/-0.1 +0.4/-0.1 50 10 GN 50.4-HF-50-M6 - - - - M6 12 - 180 96 +0.2/-0.1 +0.5/-0.1 50 10 GN 50.4-HF-50-M8 - - - - M8 12 - 180 92 +0.2/-0.1 +0.5/-0.1 63 14 GN 50.4-HF-63-M8 - - - - M8 13 - 290 209 +0.3/-0.1 +0.5/-0.1 80 18 GN 50.4-HF-80-M8 - - - - M8 14.5 - 540 482 +0.5/-0.1 +0.5/-0.1 80 18 GN 50.4-HF-80-M10 - - - - M10 14.5 - 540 479 +0.5/-0.1 +0.5/-0.1