ISO 7380-1 010.9 BN 19 Hex socket button head cap screws Fastenerstothegivenspecificationhaveareduced partially/fullythreaded loadabilityduetotheheadgeometryaccordingtoISO898-1. Steel010.9 black M2 M2,5:notincludedinISO7380-1,b:thepartiallythreadedversioncannotalwaysbeguaranteed Article d d max. k max. s t min. b L 1 2 1805541 M2 3,5 1,3 1,3 0,6 - 3 1805568 4 1805576 5 1805584 6 1805592 8 1805606 10 1805614 12 1805622 (14) 1805630 16 1805649 M2,5 4,5 1,5 1,5 0,8 - 3 1805657 4 1805665 5 1805673 6 1805681 8 1805703 10 1805800 12 1805819 (14) 1805827 16 1805843 20 3646180 M3 5,7 1,65 2 1,04 - 4 2034182 5 1020498 6 1020501 8 1020528 10 1020536 12 1020544 (14) 1020552 16 M2 M2,5:notincludedinISO7380-1,b:thepartiallythreadedversioncannotalwaysbeguaranteed Article d d max. k max. s t min. b L 1 2 1134876 M3 5,7 1,65 2 1,04 - 20 1135015 18 25 3646182 30 3646183 M4 7,6 2,2 2,5 1,3 - 5 1750216 6 1020560 8 1020579 10 1020587 12 1020595 (14) 1020609 16 1750224 20 1750232 25 1135058 20 30 1135074 35 1135082 40 1750240 M5 9,5 2,75 3 1,56 - 6 1202073 8 1020617 10 1020625 12 1020633 (14) 1020641 16 1020668 (18) 1020676 20 1020684 (22) 1020692 25 1020706 22 30 1135112 35 1135201 40 1135244 45 5402466 M6 10,5 3,3 4 2,08 - 6 1202081 8 1020714 10 1020722 12 1020730 (14) 1020749 16 1020757 (18) 1020765 20 1020773 (22) 1020781 25 1020803 30 1135260 24 35