DURATOOL 7179522 内六角螺钉, Microcap, 六角, 钢制, 4 mm, M1.6, 50只
The is a M1.6 x 4mm Microcap Screw, made of steel 12.9 grade with black and oil finish, hex socket head, M1.6 thread size. Designed to DIN912 standard.
Duratool
Wiha Tools
Keystone Electronics