M540 KRSTMCZ100-
DURATOOL M540 KRSTMCZ100- 机械螺丝, M5, 40 mm, 亮锌, 钢, 米字平头 / 沉头
The is a M5 x 40mm clear flat/countersunk head Pozidriv Machine Screw made of bright zinc-plated steel 4.8.
Newark:
# DURATOOL M540 KRSTMCZ100- Machine Screw, M5, Steel, 40 mm, Zinc, Flat / Countersunk Head Pozidriv